CN1063801C - High-strength high softening temp. copper based elastic material - Google Patents
High-strength high softening temp. copper based elastic material Download PDFInfo
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- CN1063801C CN1063801C CN98104639A CN98104639A CN1063801C CN 1063801 C CN1063801 C CN 1063801C CN 98104639 A CN98104639 A CN 98104639A CN 98104639 A CN98104639 A CN 98104639A CN 1063801 C CN1063801 C CN 1063801C
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Abstract
The present invention relates to a copper based alloy. The copper based alloy is a good elastic material which can be used for making precision elastic elements in instruments, meters and electronic communication devices. The copper based alloy has the advantages of good conductivity, high tensile strength, high elastic limit, high toughness, high softening temperature, strong resistance to stress relaxation, good machining properties, good welding properties, good electroplating properties, high corrosion resistance, high oxidation resistance, abundant sources of raw materials and nontoxicity. The production cost of the copper based alloy is lower than that of beryllium bronze, and beryllium bronze materials can be partially replaced with the copper based alloy. The material comprises the ingredients: 4.6 to 6.8% of Ni, 1.1 to 2.6% of Si, 0.8 to 2.1% of Al, 0.21 to 0.52% of Fe, 0.14 to 0.43% of Cr, 0.08 to 0.19% of Ce, 0.04 to 0.12% of Mg and Cu as the rest.
Description
The invention belongs to copper base alloy.
Conduction contact spring, connector and elastic sensing element in current precision instrumentation, the electronic communication device extensively adopts berylliumbronze or tin-phosphor bronze elastic alloy, but the rare costliness of berylliumbronze raw material, toxic in the production, alloy property is to the thermal treatment process sensitivity when producing and use, the mechanical property instability; And the poor processability in the tin-phosphor bronze, the production cycle is long, and elastic performance and electric conductivity are on the low side, precision and poor reliability, the thermostability of two kinds of alloys is all lower, and maximum operation temperature is less than 100 ℃.At present both at home and abroad energetically research and development replace the novel copper-based elastic alloy of berylliumbronze, developed titanium bronze, copper-nickel-Xi is alloy, copper-nickel-Mn series alloy, 156 complex brass alloys etc.Dropped at present the titanium bronze of suitability for industrialized production, as (or tensile strength is 980～1280Mpa, unit elongation 4.0～8.0%, electric conductivity 13～18%IACS after 0.5～1.0%Cr) the copper alloy cold working timeliness to contain 3.5～6%Ti, 0.15～0.25, [see heavy non-ferrous metal materials processing handbook, the 1st fascicle, control metal working industry press, P226～P240].Cu-9Ni-6Sn, the Cu-15Ni-8Sn (0.2Nb) alloy of U.S.'s Bell Laboratory exploitation since the sixties, by its intensity of thermomechanical treatment near in addition surpass berylliumbronze and [see (day) copper center Technical Committee, the kind of spring usefulness novel material, characteristic and uses thereof, copper processing, 1997 (1) P28-35.Be translated from " stretching the copper monthly magazine ", 1995 (5), P1-14]; The tensile strength of copper-nickel-Mn series alloy, 156 complex brass alloys and elastic limit are also near berylliumbronze.But titanium bronze melting technology complexity, castability is poor, metallurgical quality control difficulty; Copper-nickel-Xi is that discontinuous precipitation easily takes place in ag(e)ing process alloy prematurely, and makes alloy that brittle rupture easily take place; The electric conductivity of alloys such as copper-nickel-Xi system, copper-nickel-Mn series alloy, 156 complex brass is generally on the low side.
The object of the invention provides that a kind of electric conductivity and elastic performance approach that berylliumbronze, toughness are higher than berylliumbronze, anti-stress relaxation ability is strong, use temperature is higher, anti-corrosion and high strength high softening temperature copper based elastic material that oxidation-resistance is strong, and raw material sources are abundant, cost is lower, easy to process.
Material provided by the invention contains (by weight) 4.6～6.8%Ni, 1.1～2.6%Si, 0.8～2.1%Al, 0.21～0.52%Fe, 0.14～0.43%Cr, 0.08～0.19%Ce, 0.04～0.12%Mg, surplus Cu.
Embodiment:
This alloy material of the present invention is a basic raw material with industrial pure copper, electrolytic nickel, industrial pure silicon, commercial-purity aluminium, technically pure iron, extra low carbon ferrochromium, cerium-rich mischmetal and pure magnesium.Alloying constituent is for containing (by weight) 5.4%Ni, 1.6%Si, 1.3%Al, 0.32%Fe, 0.28%Cr, 0.12%Ce, 0.09%Mg, surplus Cu.In advance technically pure iron, commercial-purity aluminium and extra low carbon ferrochromium are smelted into by weight proportion the lower master alloy of relative fusing point.Preparing burden by this alloying constituent is smelted into ingot casting (slab) in medium-frequency induction furnace, ingot mill surface, and hot rolling cogging, cold rolling behind the homogenizing annealing carries out process annealing and handles, and is cold rolling again, and it is rolling to carry out finished product after the solution treatment again, carries out the finished product ageing treatment at last.
Alloy material of the present invention improves alloy substrate intensity by adopting an amount of alloying element solid solution in matrix, multiple alloying element is separated out the complicated intermetallic compound of multicomponent and disperse through timeliness and is distributed in the alloy substrate and reaches and strengthen and keep hot strength, a small amount of alloying element crystal grain thinning and improve the thermoplasticity purpose of alloy.It is little that nickel, chromium solid solution strengthening effect reduce copper matrix electric conductivity greatly, improved the recrystallization temperature of alloy; Nickel, aluminium, silicon etc. have improved the solidity to corrosion and the oxidation-resistance of alloy, and separate out the Ni of small and dispersed in ag(e)ing process
3Intermetallic compound such as Al, NiSi, and obtain higher intensity, thermostability and electric conductivity.Iron is crystal grain thinning significantly, improves intensity, toughness and the thermoplasticity of alloy, has improved the hot-work ability of alloy.Magnesium has promoted the even dispersion degree that intermetallic compound is separated out at alloy substrate in the ag(e)ing process.Silicon, rare earth cerium have improved the casting technique performance of alloy, prevent segregation, have improved the yield rate of alloy, and rare-earth element cerium can purify alloy simultaneously, improve the hot and cold processing characteristics of copper alloy, improve corrosion resistance nature, mechanical property and the high-temperature stability of alloy.
Table 1 shows alloy material of the present invention after solution treatment → cold working (30% working modulus) → ageing treatment, with the performance comparison of cold working aging state beraloy.
By table 1 as seen, the electric conductivity and the elastic performance of material of the present invention approach berylliumbronze, toughness is higher than berylliumbronze, because this alloy material recrystallization temperature is high and the dispersion-strengthened action of intermetallic compound, so have better high-temperature behavior than berylliumbronze, anti-stress relaxation performance at 20～400 ℃ of invention materials all is higher than berylliumbronze, improved product reliability, so can use down at 100 ℃～250 ℃, (thick 0.15～0.6mm) bending property is higher than the cold working aging state by bell metal to band.The present invention is at 1%H
2SO
4In 0.0008 millimeter/year of the erosion rate of (20 ℃), erosion rate (0.11 millimeter/year) much smaller than cold working aging state beraloy, in media such as room temperature 10%NaCl, 10%HCl and 250 ℃～700 ℃ high temperature oxidation atmosphere, its erosion rate, oxidation weight gain all are lower than beraloy.So the invention material also has strong anti-corrosion and oxidation-resistance, in addition, because invention material recrystallization temperature is high and superheated susceptivity is low, so production technique is easy to control, processing, welding, electroplate functionally, raw material sources of the present invention are abundant, and raw materials cost can reduce by 60% than berylliumbronze.
Table 1:
| Copper tomb resilient material of the present invention | Berylliumbronze (QBe2) | Berylliumbronze (QBe1.7) | ||
| Tensile strength (δ b) | Room temperature | 1090～1170MPa | 1320MPa | 1080MPa |
| 300 ℃ (being incubated 1 hour) | 1010～1110MPa | 550MPa | ||
| 400 ℃ (being incubated 1 hour) | 680～740MPa | 500MPa | ||
| Yield strength (δ 0.01) | 890～970MPa | 1120MPa | 860MPa | |
| Unit elongation (δ) | 2.3～3.4％ | 2％ | ||
| Young's modulus (E) | 13200～13500MPa | 13200～13500MPa | ||
| Electric conductivity (IACS) | 14.8～18.3％ | 21～23％ | ||
Claims (2)
1. a high strength high softening temperature copper based elastic material is characterized in that containing (by weight) 4.6～6.8%Ni, 1.1～2.6%Si, 0.8～2.1%Al, 0.21～0.52%Fe, 0.14～0.43%Cr, 0.08～0.19%Ce, 0.04～0.12%Mg, surplus Cu.
2. resilient material according to claim 1 is characterized in that containing (by weight) 5.4%Ni, 1.6%Si, 1.3%Al, 0.32%Fe, 0.28%Cr, 0.12%Ce, 0.09%Mg, surplus Cu.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98104639A CN1063801C (en) | 1998-01-14 | 1998-01-14 | High-strength high softening temp. copper based elastic material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98104639A CN1063801C (en) | 1998-01-14 | 1998-01-14 | High-strength high softening temp. copper based elastic material |
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| Publication Number | Publication Date |
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| CN1223306A CN1223306A (en) | 1999-07-21 |
| CN1063801C true CN1063801C (en) | 2001-03-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN98104639A Expired - Fee Related CN1063801C (en) | 1998-01-14 | 1998-01-14 | High-strength high softening temp. copper based elastic material |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101984107B (en) * | 2010-12-03 | 2012-03-07 | 中南大学 | Method for preparing CuNiSiAl elastic copper alloy |
| CN104532055A (en) * | 2014-11-21 | 2015-04-22 | 华南理工大学 | High nickel-content deformable aluminum white copper alloy material, and preparation method thereof |
| CN107201462B (en) * | 2017-06-29 | 2018-08-14 | 大连理工大学 | A kind of Cu-Ni-Fe alloys and preparation method thereof with high softening temperature |
| CN112708799A (en) * | 2020-12-21 | 2021-04-27 | 江西理工大学 | High-strength conductive softening-resistant copper alloy and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3725830A1 (en) * | 1986-09-30 | 1988-03-31 | Furukawa Electric Co Ltd | COPPER ALLOY FOR ELECTRONIC INSTRUMENTS |
| JPS6425929A (en) * | 1987-07-20 | 1989-01-27 | Furukawa Electric Co Ltd | Copper alloy for electronic equipment |
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1998
- 1998-01-14 CN CN98104639A patent/CN1063801C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3725830A1 (en) * | 1986-09-30 | 1988-03-31 | Furukawa Electric Co Ltd | COPPER ALLOY FOR ELECTRONIC INSTRUMENTS |
| JPS6425929A (en) * | 1987-07-20 | 1989-01-27 | Furukawa Electric Co Ltd | Copper alloy for electronic equipment |
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| CN1223306A (en) | 1999-07-21 |
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