CN101215681A - Solid solution aging technique for modifying Cu-Ag alloy rigidity and electric conductivity - Google Patents
Solid solution aging technique for modifying Cu-Ag alloy rigidity and electric conductivity Download PDFInfo
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- CN101215681A CN101215681A CNA2008100590766A CN200810059076A CN101215681A CN 101215681 A CN101215681 A CN 101215681A CN A2008100590766 A CNA2008100590766 A CN A2008100590766A CN 200810059076 A CN200810059076 A CN 200810059076A CN 101215681 A CN101215681 A CN 101215681A
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- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 37
- 239000000956 alloy Substances 0.000 title claims abstract description 37
- 230000032683 aging Effects 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000006104 solid solution Substances 0.000 title claims abstract description 16
- 229910017770 Cu—Ag Inorganic materials 0.000 title claims description 13
- 238000005266 casting Methods 0.000 claims abstract description 24
- 239000002184 metal Substances 0.000 claims abstract description 12
- 229910052751 metal Inorganic materials 0.000 claims abstract description 12
- 230000008569 process Effects 0.000 claims abstract description 8
- 230000006698 induction Effects 0.000 claims abstract description 7
- 238000010438 heat treatment Methods 0.000 claims description 17
- 239000000243 solution Substances 0.000 claims description 15
- 238000005868 electrolysis reaction Methods 0.000 claims description 14
- 238000005516 engineering process Methods 0.000 claims description 13
- 229910001316 Ag alloy Inorganic materials 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 6
- 238000007872 degassing Methods 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 239000010949 copper Substances 0.000 abstract description 14
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052802 copper Inorganic materials 0.000 abstract description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 abstract 2
- 229910052786 argon Inorganic materials 0.000 abstract 1
- 239000007789 gas Substances 0.000 abstract 1
- 239000002994 raw material Substances 0.000 abstract 1
- 235000019589 hardness Nutrition 0.000 description 15
- 239000000835 fiber Substances 0.000 description 10
- 239000000463 material Substances 0.000 description 10
- 238000007669 thermal treatment Methods 0.000 description 7
- 238000000137 annealing Methods 0.000 description 5
- 239000002131 composite material Substances 0.000 description 5
- 235000019628 coolness Nutrition 0.000 description 5
- 230000008018 melting Effects 0.000 description 4
- 238000010622 cold drawing Methods 0.000 description 3
- 239000004020 conductor Substances 0.000 description 3
- 238000010309 melting process Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000005242 forging Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 229910001093 Zr alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000029052 metamorphosis Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007712 rapid solidification Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
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Abstract
The invention discloses a solid solution aging process whose cuprum-argent alloy hardness and conductivity are improved. Metal argent whose mass percentage is 5-7 percent and other burden which is electrolytic cuprum are melted in a vacuum induction furnace and are poured into ingots under the protection of argon gas, through the solid solution in 730 DEG C/8 hours and in 760-780 DEG C/4-8 hours and the aging of 350-450 DEG C/2-24 hours, the Vickers hardness of cast alloy is capable of being reached to 110-130 DEG C, and the relative conductivity is reached to 85-96 percent of International Annealed Copper Standard. The invention increases the alloy hardness and relative conductivity of casting cuprum-5-7 percent of argent through the solid solution aging, the process is simple, the performance level is higher than cuprum-24 percent of argent, and the cost of raw materials is reduced.
Description
Technical field
The present invention relates to a kind of heat treatment technics of copper base alloy.Relate in particular to a kind of solid solution aging technique of the Cu-Ag of improvement alloy property.
Background technology
The conductor alloy that uses in relevant high-tech area has high requirement to intensity, hardness and conductivity, but conductor hardness of alloy and electroconductibility generally are the inverse function relation, even adopting particular technology to improve hardness is cost to sacrifice specific conductivity often then, perhaps then often loses hardness for improving specific conductivity.Therefore, be starved of and adopt particular technology can obtain good hardness and conductivity simultaneously, to satisfy use properties.The fiber phase complex intensifying Cu-Ag alloy of developing has at present demonstrated excellent hardness and specific conductivity, promises to be the preferential conductor material of selecting in the high-tech area.
One of principal element of decision Cu-Ag alloy property is a fiber composite phase distribution in the alloy.Conjugated fibre mainly relies on the strong strain original position of as-cast structure to form mutually, and except that strong strain technology, various thermal treatment process also are the important factors that influences distribution in as-cast structure and the fiber composite phase forming process.
Patent of invention CN1320712A discloses a kind of Cu-(3～20) %Ag-1.5%Cr-(0.05～0.5) %Zr alloy of (wherein " % " refers to mass percent, and be together following), and has proposed the production method of foundry goods and forging.This alloy can be made into unrestricted shape through courses of processing such as rapid solidification, forging or rolling, timeliness.Yet the alloy that adopts this mode to produce does not have high-intensity advantage, and thermal treatment process is single, can't adjust hardness and conductivity.
Patent of invention ZL02110785.8 and ZL02110630.4 disclose two kinds of complex phase fiber strengthening Cu-Ag alloys and preparation technology thereof, adopt specific melting, cold drawing and intermediate heat treatment technology, make alloy reach the high strength of 800～1150MPa and the specific conductivity of 60%～80%IACS.Yet the higher-strength of this material and electroconductibility change and mainly cooperate repeatedly by intensive cold drawing distortion that intermediate heat treatment realizes, process technology limit is strong, original structure form and performance is not optimized in advance.
Patent of invention ZL0410016688.9 discloses a kind of thermal treatment process of controlling complex phase fiber strengthening Kufil Performance Match, prepared the Cu-12%Ag alloy wire by homogenizing processing, cold drawing and intermediate heat treatment, in 20～600 ℃ of scopes, carry out the final thermal treatment may command strength of materials in 1040～220MPa range, specific conductivity changes in 73%～93%IACS scope, and over-all properties can reach higher Ag content alloy level.Yet, this technology only at be the method for the final performance variation of control material, do not relate to the heat treatment technics that original structure is optimized.
U.S. patent of invention US5391242 discloses Cu-(6～24) the %Ag sheet alloy processing technology with high-strength highly-conductive characteristic, obtain tabular two-phase fibrous tissue by specific cold rolling and thermal treatment, but do not announced the heat treatment technics of original structure in the sheet alloy of being invented.
Hong (Acta Metallurgica, 1998,46:4111; Materials Science and Engineering, 1999, A264:151) announced the relation of Cu-24%Ag alloy property with final thermal treatment temp, can control the coupling of intensity and conductivity, but this technology is only at the alloy that contains behind the more strong strain of Ag, material cost is higher, and need be at 450 ℃ of homogenizing annealing longer cycles.
Zhang etc. (Materials Letters, 2004,58:3888) relation of annealing temperature and Cu-12%Ag alloy mechanics and electric property has been proposed, shown the metamorphosis of fibrous tissue in heat treatment process.Liu etc. (Materials Science and Engineering, 2006, A418:320) isothermal time has been proposed under the different annealing temperature to Cu-Ag alloy structure Effect on Performance.Yet these achievements only relate to methods such as controlled deformation amount, intermediate heat treatment and final annealing and adjust alloy property, and further do not propose the heat treatment technics of control original structure.
Other has some to offer (Sakai etc., Applied Physics Letters, 1991,59 (23): 2965; Sakai etc., Acta Materialia, 1997,45 (3): 1017; Gaganov etc., Z.Metallkd.2004,95 (6): 425; Wang Yingmin etc., Rare Metals Materials and engineering, 2001,30:295; Zhang Xiaohui etc., the China YouSe Acta Metallurgica Sinica, 2002,12:115) all fiber reinforcement Cu-Ag heat treatment of alloy is studied, point out that proper heat treatment can form finer and closely woven fibrous tissue, has provided the relation of alloy strength and specific conductivity.Yet, these heat treatment technicss also only are confined to homogenizing annealing, intermediate heat treatment and final thermal treatment, its good result must cooperate the machining deformation process to embody, and requires to be organized as complicated heterogeneous fiber composite form, does not relate to optimizing the improved performance technology that the as cast condition original structure is produced.
Summary of the invention
The object of the present invention is to provide the solid solution aging technique of a kind of Cu-Ag of improvement alloy rigidity and specific conductivity, handle by solid solution aging as cast condition Cu-(5～7) %Ag alloy, change alloy original structure form, improve hardness of alloy and specific conductivity, for follow-up strong strain forms the original structure that the two-phase fibre composite provides optimization.
In order to achieve the above object, the technical solution used in the present invention is as follows:
(1) metal A g and electrolysis Cu are pressed the mass percent batching, wherein metal A g is (5～7) %, all the other are electrolysis Cu, earlier electrolysis Cu is placed vacuum induction furnace, melt being lower than under the 0.1Pa normal atmosphere, fill Ar to 450kPa in stove after leaving standstill degasification under 1150 ℃, add metal A g and fusing, induction stirring evenly and leave standstill the tabular ingot casting that pours into 16 * 42 * 170mm behind 2～3min.
(2) ingot casting carries out solution treatment by 730 ℃/8h+ (760～780 ℃)/(4～8) h isothermal water-cooled.
(3) ingot casting after the solution treatment being carried out 350～450 ℃ of timeliness 2～24h isothermal air coolings handles.
Cu-(5～7) the %Ag alloy Vickers' hardness that stands solid-solution and aging heat treatment reaches 110～130, and relative conductivity reaches 85%～96%IACS.
The present invention compares the beneficial effect that has with background technology:
(1) for as cast condition Cu-(5～7) %Ag alloy, can improve hardness and relative conductivity, be processed into fiber composite tissue for strain the original as-cast structure with excellent comprehensive performance is provided by solid-solution and aging heat treatment.
(2) Cu-(5～7) the %Ag alloy rigidity of the low Ag content of process solid-solution and aging heat treatment and the Cu-24%Ag alloy (comparative test result is seen Fig. 1 and Fig. 2) that the relative conductivity level has been higher than high Ag content, can significantly reduce the consumption of expensive elements A g, reduce material cost.
(3) technological process is simple, implements easily.
Description of drawings
Fig. 1 is the influence test result of aging time to different Ag content alloy Vickers' hardnesses.
Fig. 2 is the influence test result of aging time to different Ag content alloy relative conductivities.
Embodiment
Embodiment 1:
Metal A g and electrolysis Cu are pressed the mass percent batching, wherein metal A g is 5%, all the other are electrolysis Cu, earlier Cu is placed vacuum induction furnace, melt being lower than under the 0.1Pa normal atmosphere, fill Ar to 450kPa in stove after leaving standstill degasification under 1150 ℃, add Ag and fusing again, induction stirring evenly and leave standstill the tabular ingot casting that pours into 16 * 42 * 170mm behind 2～3min.
Ingot casting carries out solution treatment by 730 ℃/8h+760 ℃/4h isothermal water-cooled.
Ingot casting after the solution treatment is carried out 350 ℃ of timeliness 2h isothermal air coolings to be handled.
Through above processing and heat treated alloy, its Vickers' hardness reaches 111, and relative conductivity reaches 85%IACS and changes (seeing Fig. 1 and Fig. 2).
Embodiment 2:
Metal A g and electrolysis Cu are pressed the mass percent batching, and wherein metal A g is 6%, and all the other are electrolysis Cu.Ingot casting melting and casting process are with embodiment 1.
Ingot casting carries out solution treatment by 730 ℃/8h+760 ℃/8h isothermal water-cooled.
Ingot casting after the solution treatment is carried out 350 ℃ of timeliness 24h isothermal air coolings to be handled.
Through above processing and heat treated alloy, its Vickers' hardness reaches 116, and relative conductivity reaches 96%IACS (seeing Fig. 1 and Fig. 2).
Embodiment 3:
Metal A g and electrolysis Cu are pressed the mass percent batching, and wherein metal A g is 6.5%, and all the other are electrolysis Cu.Ingot casting melting and casting process are with embodiment 1.
Ingot casting carries out solution treatment by 730 ℃/8h+780 ℃/4h isothermal water-cooled.
Ingot casting after the solution treatment is carried out 450 ℃ of timeliness 2h isothermal air coolings to be handled.
Through above processing and heat treated alloy, its Vickers' hardness reaches 130, and relative conductivity reaches 90% (seeing Fig. 1 and Fig. 2).
Embodiment 4:
Metal A g and electrolysis Cu are pressed the mass percent batching, and wherein metal A g is 7%, and all the other are electrolysis Cu.Ingot casting melting and casting process are with embodiment 1.
Ingot casting carries out solution treatment by 730 ℃/8h+780 ℃/8h isothermal water-cooled.
Ingot casting after the solution treatment is carried out 450 ℃ of timeliness 24h isothermal air coolings to be handled.
Through above processing and heat treated alloy, its Vickers' hardness reaches 110, and relative conductivity reaches 95%IACS (seeing Fig. 1 and Fig. 2).
Claims (4)
1. solid solution aging technique that improves Cu-Ag alloy rigidity and specific conductivity is characterized in that:
1) metal A g and electrolysis Cu are pressed the mass percent batching, wherein metal A g is (5～7) %, all the other are electrolysis Cu, earlier electrolysis Cu is placed vacuum induction furnace, melt being lower than under the 0.1Pa normal atmosphere, after leaving standstill degasification under 1150 ℃, in stove, fill Ar to 450kPa, add metal A g and fusing, induction stirring is even and leave standstill 2～3min, pours into the tabular ingot casting of 16 * 42 * 170mm;
2) ingot casting is carried out solution treatment;
3) ingot casting after the solution treatment is carried out ageing treatment.
2. a kind of solid solution aging technique that improves Cu-Ag alloy rigidity and specific conductivity according to claim 1 is characterized in that: the technology of ingot casting solution treatment is 730 ℃/8h+ (760～780 ℃)/(4～8) h isothermal water-cooled.
3. a kind of solid solution aging technique that improves Cu-Ag alloy rigidity and specific conductivity according to claim 1 is characterized in that: the aging treatment process of ingot casting is 350～450 ℃/2～24h isothermal air cooling after the solution treatment.
4. a kind of solid solution aging technique that improves Cu-Ag alloy rigidity and specific conductivity according to claim 1, it is characterized in that: Cu-(5～7) the %Ag alloy Vickers' hardness that stands solid-solution and aging heat treatment reaches 110～130, and relative conductivity reaches 85%～96%IACS.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200810059076A CN100595312C (en) | 2008-01-09 | 2008-01-09 | Solid solution aging technique for modifying Cu-Ag alloy rigidity and electric conductivity |
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| CN200810059076A CN100595312C (en) | 2008-01-09 | 2008-01-09 | Solid solution aging technique for modifying Cu-Ag alloy rigidity and electric conductivity |
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| CN101215681A true CN101215681A (en) | 2008-07-09 |
| CN100595312C CN100595312C (en) | 2010-03-24 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106676314A (en) * | 2016-12-28 | 2017-05-17 | 北京有色金属研究总院 | Preparation method for Cu-Ag alloy with high-strength and high-conductivity performance |
| CN108823464A (en) * | 2018-07-02 | 2018-11-16 | 上海电缆研究所有限公司 | A kind of Cu alloy material and preparation method thereof |
| CN111424244A (en) * | 2019-01-09 | 2020-07-17 | 宁波江丰电子材料股份有限公司 | Manufacturing method of copper alloy back plate of target material |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102041366B (en) * | 2010-11-11 | 2012-12-26 | 中国计量学院 | Direct aging method for preparing high-strength high-conductivity Cu-Ni-Al conductor material |
| CN102051501B (en) * | 2010-11-11 | 2012-07-25 | 中国计量学院 | High-strength high-conductivity Cu-Ni-Al conductor material and preparation method thereof |
| CN101974699B (en) * | 2010-11-11 | 2012-07-25 | 中国计量学院 | High-strength high-conductivity Cu-Fe-Al conductor material and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106676314A (en) * | 2016-12-28 | 2017-05-17 | 北京有色金属研究总院 | Preparation method for Cu-Ag alloy with high-strength and high-conductivity performance |
| CN106676314B (en) * | 2016-12-28 | 2018-06-15 | 北京有色金属研究总院 | A kind of preparation method of high-strength high-conductivity Cu-Ag alloys |
| CN108823464A (en) * | 2018-07-02 | 2018-11-16 | 上海电缆研究所有限公司 | A kind of Cu alloy material and preparation method thereof |
| CN108823464B (en) * | 2018-07-02 | 2020-10-09 | 上海电缆研究所有限公司 | Copper alloy material and preparation method thereof |
| CN111424244A (en) * | 2019-01-09 | 2020-07-17 | 宁波江丰电子材料股份有限公司 | Manufacturing method of copper alloy back plate of target material |
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Granted publication date: 20100324 |