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WO2011152359A1 - Poudre en un composite d'alliage de titane, contenant une céramique, et son procédé de fabrication, et alliage de titane densifié et son procédé de fabrication l'utilisant - Google Patents

Poudre en un composite d'alliage de titane, contenant une céramique, et son procédé de fabrication, et alliage de titane densifié et son procédé de fabrication l'utilisant Download PDF

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Publication number
WO2011152359A1
WO2011152359A1 PCT/JP2011/062392 JP2011062392W WO2011152359A1 WO 2011152359 A1 WO2011152359 A1 WO 2011152359A1 JP 2011062392 W JP2011062392 W JP 2011062392W WO 2011152359 A1 WO2011152359 A1 WO 2011152359A1
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Prior art keywords
titanium alloy
powder
titanium
composite powder
tio
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Japanese (ja)
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治 叶野
英男 高取
菅原　智
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Toho Titanium Co Ltd
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Toho Titanium Co Ltd
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Priority to US13/701,182 priority Critical patent/US20130071283A1/en
Priority to JP2012518385A priority patent/JP5855565B2/ja
Publication of WO2011152359A1 publication Critical patent/WO2011152359A1/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F8/00—Manufacture of articles from scrap or waste metal particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/12—Metallic powder containing non-metallic particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/12—Both compacting and sintering
    • B22F3/14—Both compacting and sintering simultaneously
    • B22F3/15—Hot isostatic pressing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/023—Hydrogen absorption
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/04—Making non-ferrous alloys by powder metallurgy
    • C22C1/05—Mixtures of metal powder with non-metallic powder
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C14/00—Alloys based on titanium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • B22F2998/10—Processes characterised by the sequence of their steps
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies

Definitions

  • the present invention relates to a titanium alloy composite powder and a method for producing the same, a titanium alloy material using the same, and a method for producing the same, and more particularly to a titanium alloy material using titanium alloy scrap or a titanium alloy ingot as a raw material and a method for producing the same.
  • Titanium alloys especially Ti-6Al-4V alloys, among others, have long been known for aircraft applications.
  • This titanium alloy is compounded by an appropriate amount of Al-V alloy and then pressed and formed into a briquette, and then the briquettes are mutually joined to form a melting electrode, and the melting electrode is used as a vacuum arc melting furnace. It is manufactured by a vacuum arc melting method which sets and melts in vacuum to produce an alloy ingot.
  • a molten raw material consisting of a titanium material and an Al-V master alloy is supplied to a hearth and irradiated with an electron beam to melt them, and this molten metal is poured into a mold provided downstream to manufacture an alloy ingot. Also manufactured by law.
  • the cost of the molten titanium alloy ingot becomes expensive as a result of the high price of the Al-V master alloy which is the alloy raw material, and for further market expansion, There is a need for a method of producing a titanium alloy material that is less expensive than the current situation.
  • the product after sintering also maintains a state in which the fine particles are uniformly dispersed.
  • the Al-40% V powder or the Al powder and the V powder used in the elemental element mixing method are both very expensive, so the titanium alloy produced by the powder method is also very expensive.
  • a compact titanium alloy material is manufactured by subjecting powder-solidified solid content to vacuum sintering and further performing HIP (Hot Isostatic Press, hot isostatic pressing) treatment.
  • HIP Hot Isostatic Press, hot isostatic pressing
  • Patent Document 1 there is also known a technology that makes the raw powder mixing method an inexpensive titanium powder manufactured by the Hunter method, and known documents that the third component is added to improve strength and toughness. (See, for example, Patent Document 1 and Non-Patent Document 1).
  • Patent Document 1 stipulates that the pore diameter in the titanium alloy after sintering is 50 ⁇ m or less, and a material that is required to have higher strength than the material disclosed in the document is further required. There is a need for titanium alloys with small pore sizes, and improvements in this regard are needed.
  • An object of the present invention is to provide a titanium alloy composite powder excellent in quality, a titanium alloy material and a method for producing the same by using a titanium alloy scrap or a titanium alloy ingot as a raw material and a powder method.
  • the present inventors have diligently studied the above-mentioned problems, and using the titanium alloy scrap or titanium alloy ingot as a raw material, it is hydrogenated to form a hydrogenated titanium alloy, which is then crushed and sieved to obtain hydrogenated titanium alloy powder After adding the third component to this, dehydrogenation is carried out, or after the titanium alloy scrap or titanium alloy ingot is used as a raw material, it is hydrogenated to form a hydrogenated titanium alloy and then crushed.
  • titanium alloy powder is obtained by sieving to obtain hydrogenated titanium alloy powder and dehydrogenated to obtain titanium alloy powder, and by adding the third component to this, titanium alloy composite powder with uniform composition can be manufactured inexpensively.
  • the present invention has been completed.
  • the titanium alloy composite powder of the present invention is characterized in that ceramic powder is added, and further, the ceramic is selected from among SiC, TiC, SiO x , TiO x or Al 2 O 3 . It is a preferable embodiment that at least one or more kinds are selected.
  • the subscript x is a real number in the range of 1 ⁇ x ⁇ 2.
  • each addition amount of the ceramic powder to be added to the titanium alloy powder is 0.01 to 0.15 wt%, and the total amount when two or more kinds are further added in combination is A preferred embodiment is 0.01 to 0.3 wt%.
  • the titanium alloy powder according to the present invention preferably has a particle size of 150 ⁇ m or less.
  • the titanium alloy powder raw material contains aluminum and vanadium, or contains aluminum and vanadium in addition to at least one or more selected from zirconium, tin, molybdenum, iron and chromium. It is characterized by being.
  • a titanium alloy raw material is hydrogenated to be a hydrogenated titanium alloy raw material
  • it is pulverized to form a hydrogenated titanium alloy powder
  • ceramic powder is added and then dehydrogenated; Alternatively, the ceramic powder is added and mixed after dehydrogenation.
  • the above-mentioned titanium alloy composite powder is subjected to CIP processing (Cold Isostatic Press, cold isostatic pressing) and then HIP processing or the above-mentioned titanium alloy composite powder Post-encapsulation HIP treatment is a preferred embodiment.
  • the titanium alloy material according to the present invention is characterized by being manufactured by the method described above.
  • the ratio of the density of the alloy material to the true density of the titanium alloy material according to the present invention is preferably 99% or more.
  • the titanium alloy powder according to the present invention does not undergo dissolution and solidification, so that the distribution of the ceramic component is CIP-treated, followed by HIP treatment, or after encapsulation in capsules after HIP treatment, uniform at the time of addition A fine state is maintained, and as a result, a titanium alloy material in which ceramic particles are uniformly and finely distributed can be manufactured, and a titanium alloy material having high strength and toughness can be provided at low cost.
  • the titanium alloy composite powder according to the present invention is characterized in that a ceramic powder is blended.
  • the ceramic powder according to the present invention is at least one selected from SiC, TiC, SiO x , TiO x , and Al 2 O 3 .
  • TiO x .
  • a proper amount of these ceramic powders is added to titanium alloy powder to form a titanium alloy composite powder, which is then pressure-formed to uniformly diffuse in the titanium alloy in the production process of a titanium sintered alloy, and the result It is effective to be able to obtain a titanium sintered alloy dispersion-strengthened by ceramic powder.
  • whisker-like SiC or TiC can be used as the SiC or TiC.
  • whisker-like SiC or TiC By blending whisker-like SiC or TiC into titanium powder, it is possible to significantly improve the strength of the sintered titanium alloy.
  • the whisker-like SiC or TiC preferably has an aspect ratio in the range of 5 to 50.
  • SiC and TiC can react with the titanium alloy to newly generate TiSi 2 and TiC.
  • TiSi 2 has the effect of being able to improve the toughness of the titanium alloy.
  • TiC produced during forming is excellent in consistency with the titanium alloy matrix, and can exhibit higher strength than in the case where TiC is added as an alloy element, which is an effect unlike the prior art. Play.
  • the titanium alloy raw material according to the present invention can suitably use alloy scrap and alloy ingots such as titanium alloy chips, titanium alloy forgings, or scraps of titanium alloy rods.
  • These titanium alloy materials are preferably sized to a predetermined length or size.
  • a predetermined length or size For example, in the case of alloy chips, it is preferable to cut to a length of 100 mm or less. By cutting into the length as described above, it is possible to efficiently advance the hydrogenation step of the next step. Moreover, in the block-like alloy scrap like a forging piece, if it is the magnitude
  • the titanium alloy raw material treated and adjusted as described above is subjected to a hydrotreating step under a hydrogen atmosphere.
  • the hydrogenation treatment is preferably performed in a temperature range of 500 to 650.degree. Since the hydrotreating reaction of the alloy raw material is an exothermic reaction, the temperature raising operation by the heating furnace is unnecessary with the progress of the hydrogenation reaction, and the hydrogenation reaction can be spontaneously promoted.
  • the hydrotreated alloy raw material (hereinafter sometimes simply referred to as “hydrogenated titanium alloy”) may be ground and sieved to a predetermined particle size in an inert atmosphere such as argon gas after cooling to room temperature. It is preferable to do. Subsequently, it is preferable to add an appropriate amount of the ceramic powder according to the present invention.
  • the hydrogenated titanium alloy powder to which the ceramic powder is added is then preferably subjected to dehydrogenation treatment, and the dehydrogenation treatment can be effectively advanced by heat treatment to a high temperature region in an atmosphere maintained in a reduced pressure atmosphere. .
  • the dehydrogenation temperature is preferably in the temperature range of 500 ° C. to 800 ° C. Since the dehydrogenation reaction is an endothermic reaction unlike the above-mentioned hydrotreating reaction, a heating operation is required until the generation of hydrogen from the hydrogenated alloy powder disappears.
  • the hydrogenated titanium alloy powder which has been subjected to the dehydrogenation treatment may be sintered to each other. In this case, it is preferable to carry out the grinding and sieving treatment again.
  • the hydrogenated titanium alloy powder ground and sieved to a predetermined particle size may be dehydrogenated as it is. It is preferable to add and mix the ceramic powder which concerns on this invention with titanium alloy powder which the dehydrogenation processing completed.
  • conventional mixing means such as a V-type mixer can be used for addition and mixing.
  • the addition of the ceramic powder may be performed before or after the dehydrogenation treatment. If ceramic powder is added before the dehydrogenation treatment, aggregation and sintering of the titanium alloy powder during the dehydrogenation treatment can be prevented, and the oxygen content of the titanium alloy powder can be suppressed to a low level.
  • it is necessary to control the dehydrogenation furnace and the types of ceramics to which the pulverizing and sieving equipment after dehydrogenation is added which also has a disadvantage that the process load increases.
  • the dehydrogenation treatment is performed before the ceramic powder is added, the dehydrogenation treatment can be performed more efficiently. In addition, it has the advantage of easy management of the dehydrogenation furnace and the grinding and sieving equipment.
  • the particle size of the titanium hydride alloy powder after grinding and sieving is preferably sized in the range of 10 ⁇ m to 150 ⁇ m.
  • the ceramic powder used in the present invention is preferably in the range of 0.01 to 50 ⁇ m, more preferably 0.1 to 20 ⁇ m.
  • the ceramic powder is a fine powder of less than 0.01 ⁇ m, the powders of the third component may aggregate during mixing with the titanium alloy powder, which is not preferable. On the other hand, if the ceramic powder is more than 50 ⁇ m, the dispersibility is not sufficient, which is not preferable.
  • the content of each of the ceramic powders is 0.01 to 0.15 wt%, and two or more of them are mixed.
  • the total content in the case of composite addition is preferably 0.01 to 0.3 wt%.
  • the densification treatment is preferably carried out by appropriately combining CIP or HIP.
  • the titanium alloy composite powder obtained by the above-mentioned method is packed into a CIP rubber and treated at 100 to 200 MPa, then it is packed into a HIP capsule and a pressure of 50 to 200 MPa at a temperature not exceeding the ⁇ transformation point It is preferable to carry out HIP treatment for 1 to 5 hours. After such a CIP treatment, a densified titanium alloy material can be obtained by performing a subsequent HIP treatment.
  • the titanium alloy composite powder obtained by the above-described method is filled in a HIP capsule without CIP treatment, and subjected to HIP treatment with a pressure of 50 to 200 MPa at a temperature not exceeding the ⁇ transformation point for 1 to 5 hours. Is preferred.
  • a densified titanium alloy material can be obtained by performing such HIP treatment alone.
  • the titanium alloy material based on the addition of various ceramic powders blended in the alloy scrap exhibits its function and effect in the above-described sintering process.
  • the effect of SiC addition As SiC added to hydrogenated alloy powder, the powdery sample marketed can be used. In this embodiment, it is preferable to blend SiC powder in the range of 0.01% to 0.15% with respect to the weight of the titanium alloy powder.
  • the particle size of the added SiC is preferably 0.01 ⁇ m to 50 ⁇ m, and more preferably 0.1 ⁇ m to 20 ⁇ m.
  • the characteristics of the titanium alloy material which is the final product is bad It has the effect that it becomes possible to preferably control the size and frequency of the dispersed phase present in the tissue of the final product without affecting it.
  • the SiC powder blended into the titanium alloy composite powder reacts with titanium in the matrix during HIP processing to form TiC and Si according to the following equation.
  • SiC + Ti ⁇ TiC + Si Since TiC produced by the above reaction is uniformly dispersed in the matrix while maintaining the consistency with the matrix in titanium, as a result, the tensile strength is excellent compared to the case where no SiC is added.
  • TiC titanium carbide
  • metal Si is also generated.
  • the metallic Si produced in the matrix reacts with the titanium in the matrix to form TiSi 2 .
  • 2Si + Ti ⁇ TiSi 2 TiSi 2 formed in the matrix is deposited with keeping consistency with the matrix phase, and has an effect that the toughness of the titanium alloy material can be enhanced.
  • TiC Addition it is preferable to blend TiC with the titanium alloy powder.
  • the compounding ratio of TiC is preferably controlled in the range of 0.01 to 0.15 wt% with respect to the weight of the titanium alloy powder.
  • the particle size of TiC to be added is preferably 0.01 ⁇ m to 50 ⁇ m, and more preferably 0.1 ⁇ m to 20 ⁇ m.
  • Dispersion within the structure of the final product without adversely affecting the properties of the titanium alloy material which is the final product after densifying the titanium alloy powder according to the present invention by controlling to the above-mentioned range An effect is obtained that it is possible to preferably control the size and the frequency of the phase.
  • a titanium alloy composite powder composed of a titanium alloy powder and a TiC powder is subjected to CIP treatment, and then subjected to HIP treatment, or is subjected to HIP treatment after being enclosed in a capsule to form a densified titanium alloy according to the present invention.
  • the material can be obtained.
  • the size of TiC in the titanium alloy material after HIP treatment remains in the particle size of 0.01 to 50 ⁇ m at the time of addition, and the existing frequency is 5 pieces / mm 2 or more.
  • the uniformly and finely dispersed TiC phase in the matrix greatly contributes to the improvement of mechanical properties such as tensile strength and fatigue strength by dispersion strengthening.
  • the effect of SiO X addition By adding 0.01% to 0.15% of SiO 2 powder as an example of SiO X to titanium alloy powder, after CIP treatment and then HIP treatment as in the case of SiC addition
  • the mechanical properties of the titanium alloy material can be improved by heat treatment or by HIP treatment after encapsulation. That is, the TiO 2 phase generated by reacting with the titanium phase, the residual SiO 2 phase during the reaction, and the TiSi 2 phase generated by reacting the Ti phase generated as a result of the reaction exist in the titanium matrix and uniformly exist. It contributes to the increase in mechanical strength and suppresses the decrease in elongation due to the addition.
  • the SiO 2 powder blended into the titanium alloy composite powder reacts with titanium in the matrix during HIP processing to produce TiO 2 , Si, and TiSi 2 according to the following equation.
  • SiO 2 + Ti ⁇ TiO 2 + Si 2Si + Ti ⁇ TiSi 2 The TiO 2 generated by the reaction remains in the titanium alloy, and as a result, the titanium alloy itself is dispersion strengthened. Moreover, TiSi 2 generated by the reaction contributes to the improvement of the toughness of the titanium alloy.
  • TiO X addition By adding an appropriate amount of TiO 2 powder as an example of TiO X to titanium alloy powder, as in the case of Ti C addition, after HIP processing followed by HIP treatment or titanium alloy powder is encapsulated The mechanical properties can be improved by performing HIP treatment enclosed in The amount of TiO 2 powder added and the preferred particle size range are the same as in the case of TiC addition.
  • TiO x such as TiO is added to titanium alloy powder
  • the mechanical properties of the titanium alloy can be similarly improved.
  • the raw material of the ceramic powder is preferably in the range of 0.01 to 0.3 wt%.
  • the particle size of each ceramic to be added is preferably in the range of 0.01 to 50 ⁇ m, more preferably 0.01 to 20 ⁇ m. By controlling the addition amount and the particle size in this range, it is possible to preferably control the size and presence frequency of the ceramic particles in the structure of the titanium alloy material according to the present invention.
  • the titanium alloy composite powder prepared by the method described above can be efficiently densified by performing HIP processing performed after CIP processing and subsequent HIP processing in which the titanium alloy composite powder is enclosed in a capsule. it can.
  • dispersion strengthening in titanium alloy, grain refinement, and the like can be achieved by appropriately blending ceramic powder selected from SiC, TiC, SiO x , TiO x or Al 2 O 3 into titanium alloy powder.
  • ceramic powder selected from SiC, TiC, SiO x , TiO x or Al 2 O 3 into titanium alloy powder.
  • the effect of improving the tensile strength and the toughness is exhibited, and the ductility reduction suppressing effect is remarkable particularly in the addition of SiC and SiO X which form TiSi 2 .
  • the above-mentioned titanium alloy powder is a Ti-6Al-4V alloy, a Ti-3Al-2.5V alloy, a Ti-6Al-2Sn-4Zr-6Mo alloy, a Ti-6Al-6V-2Sn alloy, Ti-10V-2Fe-3Al alloy (10-2-3), Ti-5Al-4V-0.6Mo-0.4Fe alloy (Timetal 54M), Ti-4.5Al-3V-2Fe-2Mo alloy (SP700) , Ti-15V-3Cr-3Al-3Sn alloy (15-3-3-3), Ti-4Al-2.5V-1.5Fe alloy (ATI 425), Ti-5Al-5V-5Mo-3Cr alloy (Ti- 5553) can be used as a raw material.
  • the titanium alloy material containing copper, chromium, and iron densified by the above-described method has an effect that mechanical characteristics can be further controlled by subsequent processing such as rolling, extrusion, and drawing and heat treatment. It plays.
  • Example 1 The preparation of hydrogenated titanium alloy powder is described below. After cutting Ti-6Al-4V alloy scrap chips into chips with a length of 10 mm or less, insert them into a vessel and set them in a furnace, start evacuation after evacuation and start heating, and after the furnace temperature reaches 300 ° C, hydrogen is added It was introduced into the furnace, and heating was continued to 650 ° C. while the furnace was slightly pressurized with hydrogen. During this time, the Ti-6Al-4V alloy scrap and hydrogen reacted with each other and the temperature in the furnace rose, so the heater output was made zero and the reaction was continued until the reaction was stopped.
  • Example 2 0%, 0.05 wt%, 0.1 wt%, 0.15 wt%, 0.5 wt% of titanium hydride alloy powder having the composition of Ti-6% Al-4% V obtained in Example 1
  • Five samples to which TiO 2 powder was added at a ratio of 5 were prepared and mixed in a V-type mixer.
  • the TiO 2 powder used is a powder produced by the oxyfuel combustion method of TiCl 4 and has an average particle size of 0.8 ⁇ m.
  • the hydrogenated titanium alloy powder to which TiO 2 was added was inserted into a container made of Ti, and dehydrogenated in a vacuum heating furnace.
  • a reaction dehydrogenation
  • desorbing hydrogen gas from a temperature around 300 ° C. occurred, and as it was, the temperature was raised to 500 ° C. and 600 ° C. to promote dehydrogenation. Since the dehydrogenation reaction is an endothermic reaction, it is important to keep the temperature in the furnace constant for efficient dehydrogenation.
  • the vacuum degree is recovered by holding at 650 ° C. for 1 hour, 1 ⁇ 10 ⁇ 3 After the vacuum of mbar was obtained, the heater was stopped and cooled. The taken-out powder was partially coagulated, so it was crushed by a crusher to obtain titanium alloy powder of 300 ⁇ m or less.
  • Example 3 The TiO 2 -added titanium alloy powder described in Example 2 was filled in a CIP rubber, CIP treated at 150 MPa, and a CIP molded body was sealed in a mild steel capsule for HIP treatment to obtain a titanium alloy material according to the present invention.
  • HIP conditions are 900 ° C., 100 MPa, and 1 hour.
  • the titanium alloy material was taken out, its apparent density was measured, and the ratio of theoretical density (hereinafter sometimes simply referred to as "density ratio”) was measured, and the results are shown in Table 1.
  • the density ratio of the titanium alloy material increased from 99.1% to 99.5%.
  • Example 3-2 The TiO 2 -doped titanium alloy powder described in Example 2 was enclosed in a mild steel capsule and HIP treated. HIP conditions are 900 ° C., 100 MPa, and 1 hour. After HIP processing, the titanium alloy material was taken out and its density was measured and it was 99% or more. The density mentioned here means the ratio of apparent density to true density.
  • Example 4 A tensile test was conducted on the titanium alloy material (TiO 2 -added Ti-6Al-4V alloy material) produced in Example 3. The results are as shown in Table 1. Table 1 also shows the density measurement results. The tensile strength tended to increase from 1050 to 1100 MPa although the elongation decreased from 13% to 10% when the TiO 2 content was increased to 0.05 wt% to 0.15 wt%.
  • Embodiment 4-2 A tensile test was performed on the titanium alloy material (TiO 2 -added Ti-6Al-4V alloy material) manufactured in Example 3-2. The results are as shown in Table 1. Table 1 also shows the density measurement results. No difference was observed in the density ratio, the tensile strength and the elongation between the case where the TiO 2 -added Ti-6Al-4V alloy powder was subjected to HIP treatment after encapsulation and the case where the HIP treatment was performed after CIP treatment.
  • Example 5 When the structures of the samples of Example 4 and Comparative Example 1 were confirmed, it was confirmed that the TiO 2 phase was uniformly dispersed and present in the matrix.
  • the dimensions and the frequency of existence of the TiO 2 phase are as shown in Table 2.
  • the size of the TiO 2 phase indicates the maximum diameter of the TiO 2 phase dispersed in the matrix.
  • the TiO 2 phase presence frequency means the number of TiO 2 particles confirmed per matrix unit area.
  • the addition amount of TiO 2 added to titanium alloy powder increases from 0.05 to 0.15%, the maximum diameter of the TiO 2 phase in the matrix of the titanium alloy sintered body also tends to increase from 5 ⁇ m to 15 ⁇ m.
  • Example 6 instead of the TiO 2 powder of Example 2, 2 ⁇ m of SiO 2 powder is compounded so as to be 0.05 wt%, 0.1 wt%, 0.15 wt%, 0.5 wt% with respect to the titanium alloy powder. After CIP treatment in the same manner as in Example 3 and Example 4, then HIP treatment was performed to obtain a titanium alloy material according to the present invention. Next, density ratio measurement and tensile test of the obtained titanium alloy material were performed.
  • Example 6-2 The SiO 2 -added titanium alloy powder described in Example 2 was enclosed in a mild steel capsule and subjected to HIP treatment. HIP conditions are 900 ° C., 100 MPa, and 1 hour. After the HIP treatment, the titanium alloy material was taken out, and the density ratio measurement and the tensile test of the obtained titanium alloy material were performed.
  • the tensile strength tended to increase from 1050 MPa to 1100 MPa as the amount of SiO 2 powder added to the titanium alloy powder increased from 0.05 to 0.15 wt%. In contrast, the growth dropped from 15% to 13%.
  • the density ratio increased to the range of 99.2-99.5%. Also in Example 6-2 in which the SiO 2 -added Ti-6Al-4V alloy powder was encapsulated and then HIPed, no difference was observed in the density ratio, the tensile strength and the elongation.
  • Example 1-A A sample in which ceramic powder was not added to the titanium alloy hydrogenated powder of Example 1 was prepared, subjected to CIP treatment and HIP treatment, density measurement and tensile test in the same manner as in Examples 3 and 4. The results are as shown in Table 1.
  • Example 1-B a powder obtained by adding 0.5 wt% of TiO 2 to titanium alloy hydrogenated powder of Example 1 is prepared, subjected to CIP treatment and HIP treatment by the same method as Example 3 and Example 4, density measurement, tensile test went. The results are as shown in Table 1. In addition, when 0.5 wt% of TiO 2 was added, the elongation decreased to 2%.
  • Comparative Example 2 The structure of the sample to which 0.5 wt% of TiO 2 of Comparative Example 1 was added was observed. The results are shown in Table 2.
  • Comparative Example 3-A a powder was prepared by adding no SiO 2 powder to the titanium alloy hydrogenated powder of Example 1, CIP-treated in the same manner as in Examples 3 and 4, and then HIP-treated to obtain a titanium alloy material. The As a result, the density ratio of the obtained titanium alloy material decreased to 98%.
  • Comparative Example 3-B A powder obtained by adding 0.5 wt% of SiO 2 powder to titanium alloy hydrogenated powder of Example 1 is prepared, subjected to CIP treatment in the same manner as in Examples 3 and 4, and then subjected to HIP treatment to obtain a titanium alloy material Obtained. The density measurement, tensile strength measurement, and crystal structure observation of the obtained titanium alloy material were performed. As a result, as shown in Table 3, the elongation of the titanium alloy material was sharply reduced to around 4%.
  • the present invention is to obtain titanium alloy powder and titanium alloy material excellent in mechanical properties by powder metallurgy using titanium alloy scrap and titanium alloy ingot as raw materials, and provide titanium alloy powder, titanium alloy material and manufacturing method thereof It is

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  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Powder Metallurgy (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)

Abstract

L'invention porte sur une poudre en alliage de titane haute qualité et sur un matériau d'alliage de titane formé par un procédé de la métallurgie des poudres, comportant en tant que matière première un rebut d'alliage de titane et des lingots d'alliage de titane; l'invention porte aussi sur son procédé de fabrication. Une matière première d'alliage de titane est hydrogénée pour former un alliage de titane hydrogéné, qui est concassé et tamisé pour donner une poudre d'alliage de titane hydrogéné. Une poudre céramique, choisie parmi SiC, TiC, SiOX, TiOX (ici, l'indice x un nombre réel compris dans la plage 1 ≦ x ≦ 2) et Al2O3 est ajoutée, et un mélange de la poudre d'alliage de titane hydrogénée et de la poudre en un matériau céramique subit un traitement de déshydrogénation, ce qui va donner la poudre en un composite d'alliage de titane. L'invention porte en outre sur un matériau dense d'alliage de titane obtenu par un traitement de compression isostatique à chaud HIP suivant un traitement de pression isostatique à froid (CIP) de la poudre en un composite d'alliage de titane; et sur un procédé pour la fabrication de ce matériau. L'invention porte aussi sur un matériau dense d'alliage de titane obtenu par un traitement HIP après encapsulation de ladite poudre en un composite d'alliage de titane, et sur son procédé de fabrication.
PCT/JP2011/062392 2010-05-31 2011-05-30 Poudre en un composite d'alliage de titane, contenant une céramique, et son procédé de fabrication, et alliage de titane densifié et son procédé de fabrication l'utilisant Ceased WO2011152359A1 (fr)

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US13/701,182 US20130071283A1 (en) 2010-05-31 2011-05-30 Titanium alloy complex powder containing ceramic and process for production thereof, consolidated titanium alloy material using this powder and process for production thereof
JP2012518385A JP5855565B2 (ja) 2010-05-31 2011-05-30 セラミックスを含有したチタン合金混合粉、これを用いた緻密化されたチタン合金材およびその製造方法

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CN104827022A (zh) * 2015-04-27 2015-08-12 苏州统明机械有限公司 一种用于陶瓷的镍铬合金涂层及其制备方法
CN106399752A (zh) * 2015-07-31 2017-02-15 复盛应用科技股份有限公司 应用于高尔夫球头的钛合金板材的制造方法
JP2017214643A (ja) * 2016-03-29 2017-12-07 セイコーエプソン株式会社 チタン焼結体、装飾品および耐熱部品
JP2017222899A (ja) * 2016-06-15 2017-12-21 国立大学法人 名古屋工業大学 積層造形用金属粉末および金属粉末を用いた積層造形体
JP2018104778A (ja) * 2016-12-27 2018-07-05 勝義 近藤 焼結刃物素材およびその製造方法
CN113136543A (zh) * 2021-04-23 2021-07-20 四川大学 一种钛合金表面涂层及其制备方法
CN115647362A (zh) * 2022-05-30 2023-01-31 内蒙古工业大学 一种Al2O3-Al复合封装材料的制备方法及用途
CN116144978A (zh) * 2022-12-13 2023-05-23 淮阴工学院 一种原位宽温域耐磨钛合金复合材料及其制备方法

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CN104827022A (zh) * 2015-04-27 2015-08-12 苏州统明机械有限公司 一种用于陶瓷的镍铬合金涂层及其制备方法
CN106399752A (zh) * 2015-07-31 2017-02-15 复盛应用科技股份有限公司 应用于高尔夫球头的钛合金板材的制造方法
CN106399752B (zh) * 2015-07-31 2019-01-04 复盛应用科技股份有限公司 应用于高尔夫球头的钛合金板材的制造方法
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CN113136543A (zh) * 2021-04-23 2021-07-20 四川大学 一种钛合金表面涂层及其制备方法
CN115647362A (zh) * 2022-05-30 2023-01-31 内蒙古工业大学 一种Al2O3-Al复合封装材料的制备方法及用途
CN116144978A (zh) * 2022-12-13 2023-05-23 淮阴工学院 一种原位宽温域耐磨钛合金复合材料及其制备方法

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