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EP1696043A1 - Procédé de couler un alliage a base de titan - Google Patents

Procédé de couler un alliage a base de titan Download PDF

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Publication number
EP1696043A1
EP1696043A1 EP05004173A EP05004173A EP1696043A1 EP 1696043 A1 EP1696043 A1 EP 1696043A1 EP 05004173 A EP05004173 A EP 05004173A EP 05004173 A EP05004173 A EP 05004173A EP 1696043 A1 EP1696043 A1 EP 1696043A1
Authority
EP
European Patent Office
Prior art keywords
temperature
alloy
marked
titanium
casting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP05004173A
Other languages
German (de)
English (en)
Inventor
Sevki Baliktay
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Waldemar Link GmbH and Co KG
Original Assignee
Waldemar Link GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Waldemar Link GmbH and Co KG filed Critical Waldemar Link GmbH and Co KG
Priority to EP05004173A priority Critical patent/EP1696043A1/fr
Priority to TW095106325A priority patent/TWI395821B/zh
Priority to ARP060100693A priority patent/AR052391A1/es
Priority to MX2007010366A priority patent/MX2007010366A/es
Priority to BRPI0607832-0A priority patent/BRPI0607832A2/pt
Priority to RU2007135062/02A priority patent/RU2402626C2/ru
Priority to PL06707301T priority patent/PL1851350T3/pl
Priority to AU2006218029A priority patent/AU2006218029B2/en
Priority to AT06707301T priority patent/ATE438746T1/de
Priority to ES06707301T priority patent/ES2328955T3/es
Priority to JP2007556567A priority patent/JP5155668B2/ja
Priority to DK06707301T priority patent/DK1851350T3/da
Priority to PCT/EP2006/001790 priority patent/WO2006089790A1/fr
Priority to CN200680005976A priority patent/CN100594248C/zh
Priority to KR1020077021726A priority patent/KR101341298B1/ko
Priority to CA2597248A priority patent/CA2597248C/fr
Priority to EP06707301A priority patent/EP1851350B1/fr
Priority to DE502006004443T priority patent/DE502006004443D1/de
Publication of EP1696043A1 publication Critical patent/EP1696043A1/fr
Priority to ZA200707586A priority patent/ZA200707586B/xx
Withdrawn legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
    • C22F1/18—High-melting or refractory metals or alloys based thereon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D21/00—Casting non-ferrous metals or metallic compounds so far as their metallurgical properties are of importance for the casting procedure; Selection of compositions therefor
    • B22D21/002—Castings of light metals
    • B22D21/005—Castings of light metals with high melting point, e.g. Be 1280 degrees C, Ti 1725 degrees C
    • 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
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
    • C22F1/18—High-melting or refractory metals or alloys based thereon
    • C22F1/183—High-melting or refractory metals or alloys based thereon of titanium or alloys based thereon

Definitions

  • the invention relates to a method for casting objects from a ⁇ -titanium alloy, more particularly a titanium-molybdenum alloy.
  • Titanium alloys are becoming increasingly popular because of their many beneficial properties. In particular, because of their good chemical resistance, even at high temperature, and their low weight with excellent mechanical properties titanium alloys are used in all areas where high demands are placed on the material. Because of their excellent biocompatibility, titanium alloys are also preferably used in the medical field, in particular for implants and prostheses.
  • titanium alloys are forgings, so forging processes are mostly used. Because it has been shown that titanium alloys are difficult to pour. Usually this approach is taken in complicated shapes, but this approach leads to limitations in the selection of suitable alloys. In particular, it was found that only unsatisfactory results are achieved in the casting of ⁇ -titanium alloys (US-A-2004/0136859).
  • the invention has for its object to provide an improved casting method for ⁇ -titanium alloys, the one Production of even complex shapes with good material properties allowed.
  • the alloy in a method of casting articles of a ⁇ -titanium alloy comprising titanium molybdenum having a molybdenum content of 7.5 to 25%, the alloy is melted at a temperature of over 1770 ° C, the molten alloy is poured into a is mold-molded appropriate hot mold, hot isostatically pressed, solution-annealed and then quenched.
  • the invention With the method according to the invention, a rational production of articles made of ⁇ -titanium alloys is achieved by precision casting.
  • the invention thus makes it possible to combine the advantageous properties of ⁇ -titanium alloys, in particular its excellent mechanical properties, with the advantages of producing articles by precision casting.
  • objects with complex shapes, which could not be made or not made meaningful by conventional forging processes, can thanks to the Invention are made of a ⁇ -titanium alloy.
  • the invention also opens up the field of application of the complex shaped articles to the ⁇ -titanium alloys known for their excellent mechanical properties and biocompatibility.
  • the proportion of molybdenum in the alloy or its molybdenum equivalent is in the range of 7.5 to 25%.
  • a molybdenum content of at least 10% a sufficient stabilization of the ⁇ -phase up to the region of room temperature results.
  • the content is between 12 and 16%. This can be achieved by fast cooling after the investment casting a metastable ⁇ -phase.
  • the addition of other alloying agents is usually unnecessary. In particular, it is not necessary that vanadium or aluminum be added. The absence of this has the already mentioned advantage that the toxicity emanating from these alloy formers can be avoided.
  • bismuth which in terms of its biocompatibility likewise does not equal titanium.
  • a cold wall crucible vacuum induction plant is used to melt the ⁇ -titanium alloy.
  • the high temperatures required for a safe melting of titanium-molybdenum alloys for investment casting can be achieved.
  • a surcharge of about 60 ° C is appropriate to achieve a safe investment casting.
  • a temperature of 1830 ° C for TiMo15 must be achieved.
  • Hot isostatic pressing preferably takes place at a temperature which is at most as high as a beta transus temperature of the titanium-molybdenum alloy and at a minimum of 100 ° C. below the beta-transus temperature.
  • Hot isostatic pressing counteracts unfavorable effects due to an accumulation of molybdenum in dendrites while depleting the residual melt, by bringing interdendritic precipitates into solution.
  • Favorable is a temperature below the ⁇ -transus temperature, up to 100 ° C below.
  • temperatures in the range of 710 ° C. to 760 ° C., preferably of about 740 ° C., at an argon pressure of about 1100 to 1200 bar have proved successful.
  • temperatures of at least 700 ° C up to 880 ° C have proven, preferably in the range of 800 ° C to 860 ° C.
  • Argon is preferably used to generate a protective gas atmosphere. This achieves an improvement in the ductility of the alloy.
  • quenching of the article by water occurs after solution heat treatment.
  • cold water is used.
  • cold is meant the temperature of unheated tap water. Quenching has been shown to exert a strong influence on the ultimate mechanical properties of the article. Alternatively, it can also be quenched in inert gas, for example by argon cooling. However, the results achieved remain behind those achieved with cold water.
  • the curing in a temperature range of about 600 ° C to about 700 ° C is done.
  • Starting material is a ⁇ -titanium alloy with a molybdenum content of 15% (TiMo15). This alloy can be purchased commercially in the form of small ingots.
  • an investment casting of the objects to be cast takes place.
  • a casting plant is planned.
  • it is a cold wall crucible vacuum induction melting and casting equipment.
  • the melting point of TiMo15 is included 1770 ° C plus a surcharge of approx. 60 ° C for a safe investment casting. Overall, therefore, a temperature of 1830 ° C must be achieved.
  • the investment casting of the melt is then carried out by means of known methods, for example with wax cores and ceramic molds as a lost form. Such investment casting techniques are known for investment casting of TiA16V4.
  • the interdendritic zones have a molybdenum content of less than 15% in the cast structure, whereby the molybdenum content can drop to values of about 10%.
  • molybdenum depletion there is a lack of sufficient ⁇ -stabilizers in the interdendritic zones. This has the consequence that locally sets an increased a / ⁇ transformation temperature, whereby the precipitates to be recognized in Fig. 2 arise.
  • this layer has a thickness of about 0.03 mm.
  • a hot isostatic pressing is provided, namely at a temperature just below the ⁇ -transus temperature. It may range from 710 ° C to 760 ° C, preferably about 740 ° C.
  • the undesired precipitates in the interdendritic zones go into solution again.
  • An advance storage before or after the hipping is not required.
  • fine secondary phases are again precipitated, preferably in the original interdendritic zones (see FIG. 3, magnification 1000 times). This results in unwanted embrittlement of the material.
  • the articles have a low ductility after being tipped.
  • the castings are annealed in a chamber furnace under a protective gas atmosphere (eg argon).
  • a protective gas atmosphere eg argon
  • a temperature range of about 700 ° C to 860 ° C is selected, with a duration of several, usually two hours. There is an opposite relationship between the temperature and the duration, at higher temperature is sufficient for a shorter time and vice versa.
  • the castings are quenched with cold water.
  • Fig. 4 1000X magnification
  • the microstructure after solution annealing is shown.
  • the articles finely cast with the method according to the invention have, in their crystal structure, ⁇ grains with an average size of more than 0.3 mm. This size is typical of the crystal structure achieved by the process of the invention.
  • the modulus of elasticity decreases with increasing temperature during solution annealing, to values up to 60,000 N / mm 2 .
  • the toughness values improve with decreasing strength and hardness.
  • a modulus of elasticity of 60,000 N / mm 2 is achieved with an elongation at break of approximately 40% and a breaking strength Rm of approximately 730 N / mm 2 .

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Forging (AREA)
  • Powder Metallurgy (AREA)
  • Materials For Medical Uses (AREA)
  • Continuous Casting (AREA)
  • Manufacture And Refinement Of Metals (AREA)
EP05004173A 2005-02-25 2005-02-25 Procédé de couler un alliage a base de titan Withdrawn EP1696043A1 (fr)

Priority Applications (19)

Application Number Priority Date Filing Date Title
EP05004173A EP1696043A1 (fr) 2005-02-25 2005-02-25 Procédé de couler un alliage a base de titan
TW095106325A TWI395821B (zh) 2005-02-25 2006-02-24 鈦合金鑄造方法
ARP060100693A AR052391A1 (es) 2005-02-25 2006-02-24 Procedimiento para colar objetos a partir de una aleacion de titanio-(beta)
ES06707301T ES2328955T3 (es) 2005-02-25 2006-02-27 Procedimiento para el moldeo por colada de una aleacion de titanio.
PCT/EP2006/001790 WO2006089790A1 (fr) 2005-02-25 2006-02-27 Procede de moulage d'un alliage de titane
RU2007135062/02A RU2402626C2 (ru) 2005-02-25 2006-02-27 Способ получения изделий из титанового сплава
PL06707301T PL1851350T3 (pl) 2005-02-25 2006-02-27 Sposób odlewania stopu tytanowego
AU2006218029A AU2006218029B2 (en) 2005-02-25 2006-02-27 Method for casting titanium alloy
AT06707301T ATE438746T1 (de) 2005-02-25 2006-02-27 Verfahren zum giessen einer titanlegierung
MX2007010366A MX2007010366A (es) 2005-02-25 2006-02-27 Metodo de fundicion para una aleacion de titanio.
JP2007556567A JP5155668B2 (ja) 2005-02-25 2006-02-27 チタン合金の鋳造方法
DK06707301T DK1851350T3 (da) 2005-02-25 2006-02-27 Fremgangsmåde til stöbning af en titaniumlegering
BRPI0607832-0A BRPI0607832A2 (pt) 2005-02-25 2006-02-27 método para lingotamento de liga de titánio
CN200680005976A CN100594248C (zh) 2005-02-25 2006-02-27 铸造钛合金的方法
KR1020077021726A KR101341298B1 (ko) 2005-02-25 2006-02-27 티타늄 합금 주조 방법
CA2597248A CA2597248C (fr) 2005-02-25 2006-02-27 Procede de moulage d'un alliage de titane
EP06707301A EP1851350B1 (fr) 2005-02-25 2006-02-27 Procede de moulage d'un alliage de titane
DE502006004443T DE502006004443D1 (de) 2005-02-25 2006-02-27 Verfahren zum giessen einer titanlegierung
ZA200707586A ZA200707586B (en) 2005-02-25 2007-09-04 Method for casting titanium alloy

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05004173A EP1696043A1 (fr) 2005-02-25 2005-02-25 Procédé de couler un alliage a base de titan

Publications (1)

Publication Number Publication Date
EP1696043A1 true EP1696043A1 (fr) 2006-08-30

Family

ID=34933944

Family Applications (2)

Application Number Title Priority Date Filing Date
EP05004173A Withdrawn EP1696043A1 (fr) 2005-02-25 2005-02-25 Procédé de couler un alliage a base de titan
EP06707301A Not-in-force EP1851350B1 (fr) 2005-02-25 2006-02-27 Procede de moulage d'un alliage de titane

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP06707301A Not-in-force EP1851350B1 (fr) 2005-02-25 2006-02-27 Procede de moulage d'un alliage de titane

Country Status (18)

Country Link
EP (2) EP1696043A1 (fr)
JP (1) JP5155668B2 (fr)
KR (1) KR101341298B1 (fr)
CN (1) CN100594248C (fr)
AR (1) AR052391A1 (fr)
AT (1) ATE438746T1 (fr)
AU (1) AU2006218029B2 (fr)
BR (1) BRPI0607832A2 (fr)
CA (1) CA2597248C (fr)
DE (1) DE502006004443D1 (fr)
DK (1) DK1851350T3 (fr)
ES (1) ES2328955T3 (fr)
MX (1) MX2007010366A (fr)
PL (1) PL1851350T3 (fr)
RU (1) RU2402626C2 (fr)
TW (1) TWI395821B (fr)
WO (1) WO2006089790A1 (fr)
ZA (1) ZA200707586B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102294436A (zh) * 2011-09-19 2011-12-28 哈尔滨实钛新材料科技发展有限公司 一种钛合金及钛铝合金的低成本精密铸造方法
EP2679694A4 (fr) * 2011-02-23 2014-08-20 Nat Inst For Materials Science Alliage de ti-mo et son procédé de production

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102019401B (zh) * 2010-12-30 2012-05-23 哈尔滨工业大学 一种小型钛合金或钛铝合金复杂铸件的铸造成形方法
RU2492275C1 (ru) * 2012-01-11 2013-09-10 Открытое Акционерное Общество "Корпорация Всмпо-Ависма" Способ изготовления плит из двухфазных титановых сплавов
CN102978554A (zh) * 2012-11-13 2013-03-20 安徽春辉仪表线缆集团有限公司 一种旋塞阀的钛合金阀杆制备方法
CN104550949A (zh) * 2013-10-24 2015-04-29 中国科学院金属研究所 一种电子束快速成形Ti-6Al-4V三维金属零件的方法
CN105817608B (zh) * 2016-04-29 2019-01-18 南京宝泰特种材料股份有限公司 一种钛合金熔炼浇铸方法
CN111850346A (zh) * 2020-08-06 2020-10-30 西部金属材料股份有限公司 一种无需固溶时效处理的高强钛合金及其制备方法
KR20220122374A (ko) 2021-02-26 2022-09-02 창원대학교 산학협력단 티타늄 진공원심주조방법

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US4612066A (en) * 1985-07-25 1986-09-16 Lev Levin Method for refining microstructures of titanium alloy castings
US5226982A (en) * 1992-05-15 1993-07-13 The United States Of America As Represented By The Secretary Of The Air Force Method to produce hollow titanium alloy articles
US20040136859A1 (en) * 2000-04-12 2004-07-15 Cana Lab Corporation Titanium alloys having improved castability
US20040168751A1 (en) * 2002-06-27 2004-09-02 Wu Ming H. Beta titanium compositions and methods of manufacture thereof

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US5226982A (en) * 1992-05-15 1993-07-13 The United States Of America As Represented By The Secretary Of The Air Force Method to produce hollow titanium alloy articles
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US20040168751A1 (en) * 2002-06-27 2004-09-02 Wu Ming H. Beta titanium compositions and methods of manufacture thereof

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2679694A4 (fr) * 2011-02-23 2014-08-20 Nat Inst For Materials Science Alliage de ti-mo et son procédé de production
CN102294436A (zh) * 2011-09-19 2011-12-28 哈尔滨实钛新材料科技发展有限公司 一种钛合金及钛铝合金的低成本精密铸造方法

Also Published As

Publication number Publication date
JP2008531288A (ja) 2008-08-14
AR052391A1 (es) 2007-03-14
RU2402626C2 (ru) 2010-10-27
EP1851350B1 (fr) 2009-08-05
DK1851350T3 (da) 2009-10-19
MX2007010366A (es) 2007-10-17
TW200643182A (en) 2006-12-16
EP1851350A1 (fr) 2007-11-07
BRPI0607832A2 (pt) 2009-06-13
KR101341298B1 (ko) 2013-12-12
PL1851350T3 (pl) 2010-01-29
KR20070105379A (ko) 2007-10-30
WO2006089790A1 (fr) 2006-08-31
CA2597248C (fr) 2016-04-19
ATE438746T1 (de) 2009-08-15
CN100594248C (zh) 2010-03-17
RU2007135062A (ru) 2009-03-27
TWI395821B (zh) 2013-05-11
DE502006004443D1 (de) 2009-09-17
CN101128609A (zh) 2008-02-20
ES2328955T3 (es) 2009-11-19
CA2597248A1 (fr) 2006-08-31
AU2006218029B2 (en) 2011-07-21
AU2006218029A1 (en) 2006-08-31
JP5155668B2 (ja) 2013-03-06
ZA200707586B (en) 2008-10-29

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