CN103498068A - Preparation method of high-strength rare-earth-doped copper alloy - Google Patents
Preparation method of high-strength rare-earth-doped copper alloy Download PDFInfo
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- CN103498068A CN103498068A CN201310475171.5A CN201310475171A CN103498068A CN 103498068 A CN103498068 A CN 103498068A CN 201310475171 A CN201310475171 A CN 201310475171A CN 103498068 A CN103498068 A CN 103498068A
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- 229910000881 Cu alloy Inorganic materials 0.000 title claims abstract description 34
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 239000000956 alloy Substances 0.000 claims abstract description 40
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 37
- 238000005266 casting Methods 0.000 claims abstract description 30
- 238000010438 heat treatment Methods 0.000 claims abstract description 14
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 14
- 238000003723 Smelting Methods 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 6
- 230000008569 process Effects 0.000 claims abstract description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 31
- 229910052802 copper Inorganic materials 0.000 claims description 31
- 239000010949 copper Substances 0.000 claims description 31
- 238000002844 melting Methods 0.000 claims description 29
- 230000008018 melting Effects 0.000 claims description 29
- 238000001816 cooling Methods 0.000 claims description 19
- 238000005275 alloying Methods 0.000 claims description 11
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 10
- 150000002910 rare earth metals Chemical class 0.000 claims description 10
- 238000005496 tempering Methods 0.000 claims description 9
- 239000002994 raw material Substances 0.000 claims description 7
- 229910052786 argon Inorganic materials 0.000 claims description 5
- 239000007789 gas Substances 0.000 claims description 5
- 239000012535 impurity Substances 0.000 claims description 5
- 230000006698 induction Effects 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 4
- 229910052779 Neodymium Inorganic materials 0.000 abstract description 7
- 229910052769 Ytterbium Inorganic materials 0.000 abstract description 5
- 230000008859 change Effects 0.000 description 4
- 229910052804 chromium Inorganic materials 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 229910052748 manganese Inorganic materials 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229910052759 nickel Inorganic materials 0.000 description 4
- 229910052709 silver Inorganic materials 0.000 description 4
- 229910052726 zirconium Inorganic materials 0.000 description 4
- 238000012827 research and development Methods 0.000 description 3
- 238000000137 annealing Methods 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
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Abstract
The invention provides a preparation method of a high-strength rare-earth-doped copper alloy. The preparation method comprises an alloy smelting step, a casting step and a heat treatment step. The preparation method, by doping rare earth elements Yb and Nd, remarkably improves the copper alloy as well as increases electrical conductivity and tensile property through a heat treatment process; the preparation method obviously improves tensile strength, ductility and electrical conductivity of the alloy.
Description
Technical field
The present invention relates to the copper alloy with high strength and high conductivity field, specifically, relate to a kind of preparation method of high strength rare earth copper doped alloy.
Background technology
High property copper alloy is the important materials of national economy.Fine copper has good electroconductibility, but its tensile strength usually the highlyest can only reach 350MPa, can not meet the demand of the department such as aerospace, electronic industry, communications and transportation, national defense industry of high speed development.Therefore, need the research and development high-performance copper alloy material, meet the national economy new demand of development.The research of high-performance copper alloy material mainly concentrates on the aspects such as electrician's copper alloy, leadless environment-friendly type copper alloy, high-strength wearable copper alloy, High Purity copper and Cu-base composites, and developing direction is that research and development are high-strength, height is led, wear-resisting, anti-corrosion, high property copper alloy cheaply.Although China has become the first big country of world's copper alloy production and consumption, at the aspect such as high-performance copper alloy material exploitation and smelting technique and advanced international standard, also there is larger gap.
And at present, guaranteeing that material has under the prerequisite of good processing performance, Practical Performance and low cost production, and solve the contradiction between the high conduction of copper alloy and high strength, be the most important thing of various countries' research and development.The design of alloy of material is that high-strength, the height that obtain material are led, the high performance the first step, the design of alloying constituent not only comprises kind and the add-on that adds alloying element, need to consider to add the mutual collocation of alloying element simultaneously, add the mutual ratio of alloying element.For doped element is further selected, make it give play to better the effect that improves the copper alloy performance, still need and will much work and effort.
There are some researches show, appropriate mishmetal add the metallographic form generation considerable change that can make alloy, change due to phase morphology has simultaneously also caused that new feature appears in the segregation mode of alloy interior element, is in particular in the variation of concentration difference and the directivity thereof of each phase.The variation brought by above-mentioned microtexture, make copper alloy can significantly improve the performance of each side.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides a kind of preparation method of high strength rare earth copper doped alloy, use the method can obviously strengthen intensity and the electrical property of copper alloy.
The technical solution used in the present invention is: a kind of preparation method of high strength rare earth copper doped alloy, it is characterized in that: the component that described copper alloy contains following weight per-cent: 0.1 ~ 1.0% Yb, 0.1 ~ 1.0% Nd, 3.0 ~ 5.0% Cr, 4.0 ~ 8.0% Zr, 0.10 ~ 0.30% Mg, 0.01 ~ 0.10% Ag, 0.001 ~ 0.005% Ni, 0.001 ~ 0.005% Mn, 0.001 ~ 0.005% Ti, and inevitable impurity, surplus is copper, and described treatment process is comprised of molten alloy step, casting step and heat treatment step; Be specially the molten alloy step: adopt electrolytic copper as copper raw material, by proportioning, in melting equipment, add each alloying element, make alloy melting become molten state; The casting step: by the alloy of described molten state, slowly cast, obtain ingot casting; Heat treatment step: after described ingot casting is cooled to room temperature, heating is annealed, and air cooling after insulation, then heat tempering by ingot casting, insulation, finally again air cooling to room temperature.
In described alloy preparation process, adopt electrolytic copper as copper raw material, by proportioning, add each alloying element, described melting equipment is the intermediate frequency vacuum induction furnace, and vacuum tightness during melting is 30 ~ 40Pa, and the melting top temperature is 1100 ~ 1300 ℃, smelting time is 10 ~ 30 minutes, makes alloy become molten state.
In described casting step, by the alloy of described molten state, slowly cast under the centrifugal speed of 300 ~ 350r/min, teeming temperature is 1200 ℃, during cast, in described melting equipment, is filled with argon gas to 0.5MPa, obtains ingot casting.
In described heat treatment step, after described ingot casting is cooled to room temperature, is heated to 800 ~ 850 ℃ and is annealed, and being incubated 2 ~ 4 hours, air cooling afterwards, reheat 500 ~ 600 ℃ of tempering by the ingot casting of air cooling to 300 ℃, and be incubated 1 ~ 2 hour, finally again air cooling to room temperature.
After described heat treatment step, the room temperature tensile strength of resulting copper alloy product is 600 ~ 800MPa, and unit elongation is 8 ~ 10%, and electric conductivity is 85 ~ 90% IACS.
Advantage of the present invention is: by selection and the interpolation of rare earth element, copper alloy is being adulterated by Overheating Treatment, obviously improve and improved tensile strength, unit elongation and the electric conductivity of alloy, obtained that high-strength, the height of demand are in the market led, high property copper alloy cheaply.
Embodiment
Below in conjunction with embodiment and Comparative Examples, the present invention is described in more detail.
Embodiment 1:
The component that the copper alloy adopted contains following weight per-cent: 0.5% Yb, 0.8% Nd, 5.0% Cr, 8.0% Zr, 0.10% Mg, 0.08% Ag, 0.001% Ni, 0.001% Mn, 0.005% Ti, and inevitable impurity, surplus is copper.At first, adopt electrolytic copper as copper raw material, by proportioning, in melting equipment, add each alloying element, melting equipment is the intermediate frequency vacuum induction furnace, and vacuum tightness during melting is 30Pa, and the melting top temperature is 1300 ℃, and smelting time is 10 minutes, makes alloy become molten state.By the alloy of described molten state, slowly cast under the centrifugal speed of 300r/min, teeming temperature is 1200 ℃, during cast, in described melting equipment, is filled with argon gas to 0.5MPa, obtains ingot casting.Then, after described ingot casting is cooled to room temperature, being heated to 800 ℃ is annealed, and being incubated 4 hours, air cooling afterwards, reheat 550 ℃ of tempering by the ingot casting of air cooling to 300 ℃, and be incubated 2 hours, last air cooling again is 600MPa to the room temperature tensile strength of the resulting copper alloy product of room temperature, and unit elongation is 10%, and electric conductivity is 85% IACS.
Embodiment 2:
The component that the copper alloy adopted contains following weight per-cent: 0.8% Yb, 1.0% Nd, 4.0% Cr, 5.0% Zr, 0.30% Mg, 0.05% Ag, 0.005% Ni, 0.005% Mn, 0.005% Ti, and inevitable impurity, surplus is copper.At first, adopt electrolytic copper as copper raw material, by proportioning, in melting equipment, add each alloying element, melting equipment is the intermediate frequency vacuum induction furnace, and vacuum tightness during melting is 35Pa, and the melting top temperature is 1200 ℃, and smelting time is 15 minutes, makes alloy become molten state.By the alloy of described molten state, slowly cast under the centrifugal speed of 350r/min, teeming temperature is 1200 ℃, during cast, in described melting equipment, is filled with argon gas to 0.5MPa, obtains ingot casting.Then, after described ingot casting is cooled to room temperature, being heated to 850 ℃ is annealed, and being incubated 3 hours, air cooling afterwards, reheat 600 ℃ of tempering by the ingot casting of air cooling to 300 ℃, and be incubated 1 hour, last air cooling again is 700MPa to the room temperature tensile strength of the resulting copper alloy product of room temperature, and unit elongation is 10%, and electric conductivity is 90% IACS.
Embodiment 3:
The component that the copper alloy adopted contains following weight per-cent: 1.0% Yb, 1.0% Nd, 3.0% Cr, 6.0% Zr, 0.20% Mg, 0.03% Ag, 0.001% Ni, 0.005% Mn, 0.001% Ti, and inevitable impurity, surplus is copper.At first, adopt electrolytic copper as copper raw material, by proportioning, in melting equipment, add each alloying element, melting equipment is the intermediate frequency vacuum induction furnace, and vacuum tightness during melting is 40Pa, and the melting top temperature is 1100 ℃, and smelting time is 30 minutes, makes alloy become molten state.By the alloy of described molten state, slowly cast under the centrifugal speed of 350r/min, teeming temperature is 1200 ℃, during cast, in described melting equipment, is filled with argon gas to 0.5MPa, obtains ingot casting.Then, after described ingot casting is cooled to room temperature, being heated to 850 ℃ is annealed, and being incubated 2 hours, air cooling afterwards, reheat 500 ℃ of tempering by the ingot casting of air cooling to 300 ℃, and be incubated 1 hour, last air cooling again is 800MPa to the room temperature tensile strength of the resulting copper alloy product of room temperature, and unit elongation is 8%, and electric conductivity is 90% IACS.
Comparative Examples 1:
To undope rare earth element y b and Nd, the copper alloy that other constituent contents are identical with embodiment 1, after adopting same melting, casting and heat treatment step preparation, the room temperature tensile strength of resulting copper alloy product is only 400MPa, electric conductivity is 60%IACS.
Comparative Examples 2:
The copper alloy identical with embodiment 1 with content by elemental composition, adopt same melting and casting step, but change heat treatment process, no longer carry out tempering after annealing, or change annealing and tempering temperature, the room temperature tensile strength of resulting copper alloy product only has 400 ~ 500MPa equally, and electric conductivity is 50 ~ 70%.
By embodiment 1-3 and Comparative Examples 1 and 2, can be found out, by utilizing the preparation method according to a kind of high strength rare earth copper doped alloy of the embodiment of the present invention, select specific rare earth element y b and Nd strict its content of controlling, in conjunction with thermal treatment process step and parameter, obviously improve and improved tensile strength, unit elongation and the electric conductivity of alloy, obtained that high-strength, the height of demand are in the market led, high property copper alloy cheaply.
Although illustrated and described embodiments of the invention, those having ordinary skill in the art will appreciate that: in the situation that do not break away from principle of the present invention and aim can be carried out multiple variation, modification, replacement and modification to these embodiment, scope of the present invention is limited by claim and equivalent thereof.
Claims (5)
1. the preparation method of a high strength rare earth copper doped alloy, it is characterized in that: the component that described copper alloy contains following weight per-cent: the Yb of 0.1 ~ 1.0 %, 0.1 the Nd of ~ 1.0 %, 3.0 the Cr of ~ 5.0 %, 4.0 the Zr of ~ 8.0 %, 0.10 the Mg of ~ 0.30 %, 0.01 the Ag of ~ 0.10 %, 0.001 the Ni of ~ 0.005 %, 0.001 the Mn of ~ 0.005 %, 0.001 ~ 0.005% Ti, and inevitable impurity, surplus is copper, and described treatment process is comprised of molten alloy step, casting step and heat treatment step; Be specially,
Molten alloy step: adopt electrolytic copper as copper raw material, by proportioning, in melting equipment, add each alloying element, make alloy melting become molten state;
The casting step: by the alloy of described molten state, slowly cast, obtain ingot casting;
Heat treatment step: after described ingot casting is cooled to room temperature, heating is annealed, and air cooling after insulation, then heat tempering by ingot casting, insulation, finally again air cooling to room temperature.
2. the preparation method of a kind of high strength rare earth copper doped alloy as claimed in claim 1, it is characterized in that: in described alloy preparation process, adopt electrolytic copper as copper raw material, add each alloying element by proportioning, described melting equipment is the intermediate frequency vacuum induction furnace, and vacuum tightness during melting is 30 ~ 40Pa, and the melting top temperature is 1100 ~ 1300 ℃, smelting time is 10 ~ 30 minutes, makes alloy become molten state.
3. the preparation method of a kind of high strength rare earth copper doped alloy as claimed in claim 1, it is characterized in that: in described casting step, alloy by described molten state, slowly cast under the centrifugal speed of 300 ~ 350r/min, teeming temperature is 1200 ℃, be filled with argon gas to 0.5MPa during cast in described melting equipment, obtain ingot casting.
4. the preparation method of a kind of high strength rare earth copper doped alloy as claimed in claim 1, it is characterized in that: in described heat treatment step, after described ingot casting is cooled to room temperature, being heated to 800 ~ 850 ℃ is annealed, and being incubated 2 ~ 4 hours, air cooling afterwards, reheat 500 ~ 600 ℃ of tempering by the ingot casting of air cooling to 300 ℃, and be incubated 1 ~ 2 hour, finally again air cooling to room temperature.
5. the preparation method of a kind of high strength rare earth copper doped alloy as claimed in claim 1, it is characterized in that: after described heat treatment step, the room temperature tensile strength of resulting copper alloy product is 600 ~ 800MPa, unit elongation is 8 ~ 10%, and electric conductivity is 85 ~ 90% IACS.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310475171.5A CN103498068B (en) | 2013-10-13 | 2013-10-13 | A kind of preparation method of high strength rare earth Yb, Nd copper doped alloy |
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| CN201310475171.5A CN103498068B (en) | 2013-10-13 | 2013-10-13 | A kind of preparation method of high strength rare earth Yb, Nd copper doped alloy |
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| CN103498068B CN103498068B (en) | 2015-11-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105624454A (en) * | 2016-02-02 | 2016-06-01 | 王增琪 | Preparation method for high-strength high-filtration-flux alloy component |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04285137A (en) * | 1991-03-11 | 1992-10-09 | Ngk Insulators Ltd | Spring constituted of beryllium copper alloy and its manufacture |
| WO2004070070A1 (en) * | 2003-02-05 | 2004-08-19 | Sumitomo Metal Industries, Ltd. | Cu ALLOY AND METHOD FOR PRODUCTION THEREOF |
| WO2006109801A1 (en) * | 2005-04-12 | 2006-10-19 | Sumitomo Metal Industries, Ltd. | Copper alloy and process for producing the same |
| CN1856588A (en) * | 2003-09-19 | 2006-11-01 | 住友金属工业株式会社 | Copper alloy and its manufacturing method |
| CN103343258A (en) * | 2013-06-18 | 2013-10-09 | 山东亨圆铜业有限公司 | Preparation method of high-strength corrosion-resistant copper pipe for heat exchanger |
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2013
- 2013-10-13 CN CN201310475171.5A patent/CN103498068B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04285137A (en) * | 1991-03-11 | 1992-10-09 | Ngk Insulators Ltd | Spring constituted of beryllium copper alloy and its manufacture |
| WO2004070070A1 (en) * | 2003-02-05 | 2004-08-19 | Sumitomo Metal Industries, Ltd. | Cu ALLOY AND METHOD FOR PRODUCTION THEREOF |
| CN1856588A (en) * | 2003-09-19 | 2006-11-01 | 住友金属工业株式会社 | Copper alloy and its manufacturing method |
| WO2006109801A1 (en) * | 2005-04-12 | 2006-10-19 | Sumitomo Metal Industries, Ltd. | Copper alloy and process for producing the same |
| CN103343258A (en) * | 2013-06-18 | 2013-10-09 | 山东亨圆铜业有限公司 | Preparation method of high-strength corrosion-resistant copper pipe for heat exchanger |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105624454A (en) * | 2016-02-02 | 2016-06-01 | 王增琪 | Preparation method for high-strength high-filtration-flux alloy component |
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Effective date of registration: 20150930 Address after: Taizhou City, Zhejiang province 318050 Luqiao Jinqing beam vibration beam Village Road No. 20 Applicant after: Luo Chunhua Address before: 101100, Beijing, Tongzhou District Jade Garden, 15 east side building, 6 door, room 602 Applicant before: Wang Zengqi |
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Effective date of registration: 20170329 Address after: 528300 Guangdong City, Shunde District Leliu Street office affluent village road, Chong Long Road, No. 1, No. 1, No. Patentee after: Foshan Yuguang Electrical Co. Ltd. Address before: Taizhou City, Zhejiang province 318050 Luqiao Jinqing beam vibration beam Village Road No. 20 Patentee before: Luo Chunhua |
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