JPS63270436A - High strength high toughness cu alloy having less characteristic anisotropy - Google Patents
High strength high toughness cu alloy having less characteristic anisotropyInfo
- Publication number
- JPS63270436A JPS63270436A JP62105924A JP10592487A JPS63270436A JP S63270436 A JPS63270436 A JP S63270436A JP 62105924 A JP62105924 A JP 62105924A JP 10592487 A JP10592487 A JP 10592487A JP S63270436 A JPS63270436 A JP S63270436A
- Authority
- JP
- Japan
- Prior art keywords
- alloy
- anisotropy
- toughness
- characteristic anisotropy
- strength
- 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.)
- Granted
Links
- 229910000881 Cu alloy Inorganic materials 0.000 title claims abstract description 11
- 229910052742 iron Inorganic materials 0.000 claims abstract description 5
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 5
- 229910052802 copper Inorganic materials 0.000 claims abstract description 4
- 239000012535 impurity Substances 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 abstract description 15
- 239000000956 alloy Substances 0.000 abstract description 15
- 239000000463 material Substances 0.000 abstract description 13
- 229910052804 chromium Inorganic materials 0.000 abstract description 10
- 238000007747 plating Methods 0.000 abstract description 4
- 229910004353 Ti-Cu Inorganic materials 0.000 abstract 1
- 238000012545 processing Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 7
- 238000005452 bending Methods 0.000 description 5
- 238000005096 rolling process Methods 0.000 description 5
- 229910017945 Cu—Ti Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000000137 annealing Methods 0.000 description 2
- 238000005097 cold rolling Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910000765 intermetallic Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229910000967 As alloy Inorganic materials 0.000 description 1
- 229910001020 Au alloy Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910020517 Co—Ti Inorganic materials 0.000 description 1
- WPPDFTBPZNZZRP-UHFFFAOYSA-N aluminum copper Chemical compound [Al].[Cu] WPPDFTBPZNZZRP-UHFFFAOYSA-N 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 239000003353 gold alloy Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000004881 precipitation hardening Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、高強度および高靭性を有し、かつ加工方向
と加工直角方向の特性の相異が少ない、すなわち特性異
方性の少ないＣｕ合金に関するものである。Detailed Description of the Invention [Field of Industrial Application] This invention is directed to Cu which has high strength and high toughness and has little difference in properties in the processing direction and the direction perpendicular to processing, that is, has little property anisotropy. It concerns alloys.
一般に、重量％で（以下チは重量易な示す）、Ｔｉ：２
〜５壬を含有するＣｕ−Ｔ＋金合金、すぐれた析出硬化
能を有し、したがってべ１７１Ｊウム銅に匹適する強度
が得られることから、高強度および高靭性が要求される
コネクターやスイッチなどの電気接点のバネ材などとし
て使用されている。In general, Ti: 2% by weight (hereinafter ``H'' indicates weight)
The Cu-T+gold alloy containing ~5.5 mm has excellent precipitation hardening ability and therefore has a strength comparable to that of aluminum copper, making it suitable for connectors, switches, etc. that require high strength and high toughness. It is used as a spring material for electrical contacts.
一方、近年、部品の小型化および軽量化に対する要求は
厳しく、これに伴って薄肉化および高強度化は不可避で
あることから、加工度が増大する傾向にあり、この結果
例えば圧延材や引抜き材などの場合、加工方向と加工直
角方向における特性に著しい相異が現われるようになり
、このような特性異方性は、バネ材にとって致命的であ
って、特（ユパネ限界値や繰り返し曲げ特性に強く現わ
れるものである。On the other hand, in recent years, there has been a severe demand for smaller and lighter parts, and as a result, thinner walls and higher strength are unavoidable, so there is a tendency for the degree of processing to increase.As a result, for example, rolled materials and drawn materials In cases such as this, a significant difference appears in the properties in the processing direction and the direction perpendicular to the processing. Such anisotropy of properties is fatal to spring materials, especially (Yupane limit value and repeated bending properties). It appears strongly.
特にこの特性異方性は、上記の従来Ｃｕ−Ｔｉ合金には
顕著に現われるものであり、したがってその加工に際し
ては、大きな加工度がとれず、しかも加工工程中に、こ
の特性異方性を消去するための特別な高温熱処理を必要
とし、この結果複雑な加工工程となるばかりでなく、コ
スト上昇をもたらし、かつ高温熱処理による結晶粗大化
や脆化、さらに酸化などの常客の発生も避けられないな
どの問題が生じるなど困難な加工を強いられているのが
現状である。In particular, this property anisotropy is conspicuous in the conventional Cu-Ti alloys mentioned above, and therefore a large degree of processing cannot be achieved during processing, and it is difficult to eliminate this property anisotropy during the processing process. This requires a special high-temperature heat treatment to process the material, which not only results in a complicated processing process but also increases costs, and the occurrence of crystal coarsening, embrittlement, and oxidation due to the high-temperature heat treatment is unavoidable. The current situation is that we are forced to perform difficult processing such as problems such as these.
そこで、本発明者等は、上述のような観点から、高強度
および高靭性を有する上記の従来Ｃｕ−Ｔｉ合金（二着
目し、これを改善して特性異方性の少ないものとすべく
研究を行なった結果、上記従来Ｃｕ −Ｔｉ合金に、合
金成分としてＣＯとＣｒを共存含有させると、加工材の
特性異方性が激減するようになると共に、Ｃｏ−Ｔｉ系
金属間化合物の初晶粒子がＣｒ成分の作用によって効果
的に微細化される結果、曲げ加工性やメッキ性が著しく
改善されるようになり、さら（二合金成分としてＮｉお
よびＦｅを含有させると、特性異方性が一段と向上する
よう（＝なるという知見を得たのである。Therefore, from the above-mentioned viewpoint, the present inventors focused on the conventional Cu-Ti alloy described above (secondary), which has high strength and high toughness, and conducted research to improve this and make it less anisotropic in properties. As a result, when CO and Cr are co-incorporated as alloy components in the conventional Cu-Ti alloy, the anisotropy of the properties of the processed material is drastically reduced, and the primary crystals of the Co-Ti intermetallic compound are reduced. As a result of the particles being effectively refined by the action of the Cr component, the bending workability and plating properties are significantly improved. I gained the knowledge that I would be able to improve my skills even further.
この発明は、上記知見にもとづいてなされたものであっ
て、
Ｔｉ ： ２．２〜５％、 （：’ｏ ： ０．１〜
０．８％、Ｃｒ：０．０２〜０．５％、
を含有し、さらに必要に応じて、
ＮｉおよびＦｅのうちの１種または２種：０．０５〜０
．６％、
を含有し、残りがＣｕと不可避不純物からなる組成を有
する特性異方性の少ない高強度高靭性Ｃｕ合金に特徴を
有するものである。This invention was made based on the above findings, and includes: Ti: 2.2-5%, (:'o: 0.1-5%)
0.8%, Cr: 0.02 to 0.5%, and, if necessary, one or two of Ni and Fe: 0.05 to 0.
．． It is characterized by a high-strength, high-toughness Cu alloy with little characteristic anisotropy and having a composition containing 6% of Cu and the remainder consisting of Cu and unavoidable impurities.
つぎ（−１この発明のＣｕ合金において、成分組成を上
記の通りに限定した理由を説明する。Next, (-1) The reason why the component composition of the Cu alloy of the present invention is limited as described above will be explained.
（ａ） Ｔ＋
Ｔｉ成分には、合金の強度および靭性な向上させる作用
があるが、その含有量が２．２％未満では前記作用に所
望の効果が得られず、一方その含有量が５％を越えると
熱間加工性が急激に低下するようになることから、その
含有量を２．２〜５％と定めた。(a) The T+ Ti component has the effect of improving the strength and toughness of the alloy, but if the content is less than 2.2%, the desired effect cannot be obtained; on the other hand, if the content is less than 5% If the content exceeds 2.2% to 5%, the hot workability will rapidly decrease.
（ｂ） ＣｏおよびＣｒ
これらの成分（＝は、上記の通り共存した状態で加工材
の特性異方性を緩和し、かつ組織を微細化して曲げ加工
性およびメッキ性を改善する作用があるが、その含有量
がそれぞれＣｏ ： ０．１％未満およびＣｒ：０．０
２％未満では前記作用（二所望の効果が得られず、一方
その含有量がＣｏ ： ０．８％およびＣｒ ： ０．
５％をそれぞれ越えると、粗大晶出粒子が素地中に分散
するようになって、曲げ加工性およびメッキ性の低下を
きたすよう（＝なることから、その含有量を、それぞれ
Ｃｏ ： ０．１〜０．８％、 （：：ｒ ：０．０２
〜０．５％と定めた。(b) Co and Cr These components (= have the effect of alleviating the characteristic anisotropy of the processed material in the coexistence state as described above, and improving the bending workability and plating property by refining the structure. , whose contents are Co: less than 0.1% and Cr: 0.0, respectively.
If the content is less than 2%, the desired effect cannot be obtained; on the other hand, if the content is Co: 0.8% and Cr: 0.
If it exceeds 5%, coarse crystallized particles become dispersed in the base material, resulting in a decrease in bending workability and plating property (=), so the content is determined as Co: 0.1. ~0.8%, (::r:0.02
It was set at ~0.5%.
（ｃ） ＮｉおよびＦｅ
これらの成分には、合金の特性異方性を一段と向上させ
るほか、電気伝導度を高める作用があるので、必要に応
じて含有されるが、その含有量が０．０５％未満では前
記作用に所望の向上効果が得られず、一方その含有量が
０．５％を越えると、強度低下を招き、かつ晶出金属間
化合物が粗大化するようになることから、その含有量を
０．０５〜０．６％と定めた。(c) Ni and Fe These components have the effect of further improving the characteristic anisotropy of the alloy and increasing the electrical conductivity, so they are included as necessary, but if the content is 0.05 If the content is less than 0.5%, the desired effect of improving the above action cannot be obtained, while if the content exceeds 0.5%, the strength will decrease and the crystallized intermetallic compounds will become coarse. The content was determined to be 0.05 to 0.6%.
つぎに、この発明のＣｕ合金を実施例により具体的に説
明する。Next, the Cu alloy of the present invention will be specifically explained using examples.
通常の高周波真空溶解炉を用い、黒鉛るつぼにてそれぞ
れ第１表に示される組成をもった溶湯を調製し、金型鋳
造にて直径：６０咽φ×重＠：５に９のインゴットとし
、面側後、熱間鍛造および態量圧延にて幅：１００ｗＸ
厚さ：６０の板材とし、これに温度：９２０℃に１時間
保持後、水中急冷の条件で溶体化処理を施した後、冷間
圧延と、３６０〜５００℃の範囲内の温度での中間焼鈍
とを繰り返し行ない、圧延率：５０％の最終冷間圧延を
行ない、最終的に温度：３６０℃に２０分間保持の歪取
焼鈍を施すことによって、いずれも板厚：０．２５ｒｍ
を有する本発明Ｃｕ合金１〜１０および比較ＣＬＩ合金
１〜３の薄板材をそれぞれ製造した。Using an ordinary high-frequency vacuum melting furnace, prepare molten metals each having the composition shown in Table 1 in a graphite crucible, and mold them into ingots with a diameter of 60 mm and a weight of 5 to 9. Width: 100wX after face side, hot forging and weight rolling
A plate material with a thickness of 60°C was prepared, and after being held at a temperature of 920°C for 1 hour, it was subjected to solution treatment under conditions of quenching in water, followed by cold rolling and intermediate rolling at a temperature within the range of 360 to 500°C. By repeating annealing, final cold rolling at a rolling rate of 50%, and finally strain relief annealing at a temperature of 360°C for 20 minutes, the plate thickness: 0.25rm.
Thin plate materials of Cu alloys 1 to 10 of the present invention and comparative CLI alloys 1 to 3 having the following properties were manufactured, respectively.
ついで、これらの薄板材（二ついて、圧延方向および圧
延直角方向の引張特性を測定すると共（二、片持パリ・
バネ限界試験機を用いてバネ限界値を測定し、さらに曲
げ部のＲが０．２ ｍの治具を用い、試験片をはさんで
直立状態とし、はさみ込み根元部を中心に試験片を左右
交互に１８ｄ′繰り返し曲げし、曲げ部に割れが発生す
るまでの繰り返し曲げ回数（９０°を１回と算定）を測
定した。これらの測定結果を第１表に示した。Next, we measured the tensile properties of these thin plates in the rolling direction and in the direction perpendicular to the rolling direction (2.
The spring limit value was measured using a spring limit testing machine, and using a jig with a bending part R of 0.2 m, the test piece was held in an upright position, and the test piece was held centered around the base. It was repeatedly bent for 18 d' left and right alternately, and the number of repeated bends (90° was calculated as one bend) until cracking occurred at the bent portion was measured. The results of these measurements are shown in Table 1.
第１表に示される結果から、本発明Ｃｕ合金１〜１０は
、いずれも高強度および高靭性を有し、かつこれらの特
性における異方性がきわめて小さいものであるのに対し
て、比較Ｃｕ合金１〜３（＝見られるように、構成成分
のうち、特にＣｏおよびＣｒのいずれか、または両方が
含有しない場合には特性異方性の劣ったもの（＝なるこ
とが明らかである。From the results shown in Table 1, Cu alloys 1 to 10 of the present invention all have high strength and high toughness, and the anisotropy in these properties is extremely small, whereas the comparative Cu alloys have extremely low anisotropy in these properties. Alloys 1 to 3 (=As can be seen, it is clear that among the constituent components, if either or both of Co and Cr is not contained, the characteristic anisotropy is poor (=).
上述のよう（−１この発明のＣｕ合金は、高強度および
高靭性を有し、かつ特性異方性のきわめて少ないもので
あり、しかもこの特性異方性は加工度を増加させて一層
の薄肉化をはかつても大きくならないものであり、バネ
材などとしての用途に有用なものである。As mentioned above (-1), the Cu alloy of the present invention has high strength and high toughness, and has very little property anisotropy.Moreover, this property anisotropy increases the degree of processing and makes it possible to form even thinner walls. It has never increased in size, making it useful for applications such as spring materials.
Claims (2)
Ｃｒ：０．０２〜０．５％、 を含有し、残りがＣｕと不可避不純物からなる組成（以
上重量％）を有することを特徴とする特性異方性の少な
い高強度高靭性Ｃｕ合金。(1) Ti: 2.2-5%, Co: 0.1-0.8%,
A high-strength, high-toughness Cu alloy with little characteristic anisotropy, characterized in that it contains 0.02 to 0.5% of Cr, with the remainder consisting of Cu and unavoidable impurities (weight percent).
Ｃｒ：０．０２〜０．５％、 を含有し、さらに、 ＮｉおよびＦｅのうちの１種または２種：０．０５〜０
．６％、 を含有し、残りがＣｕと不可避不純物からなる組成（以
上重量％）を有することを特徴とする特性異方性の少な
い高強度高靭性Ｃｕ合金。(2) Ti: 2.2-5%, Co: 0.1-0.8%,
Contains Cr: 0.02-0.5%, and further contains one or two of Ni and Fe: 0.05-0
．． A high-strength, high-toughness Cu alloy with little characteristic anisotropy, characterized by having a composition (weight %) of 6% and the rest consisting of Cu and unavoidable impurities.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10592487A JPH0788545B2 (en) | 1987-04-28 | 1987-04-28 | High strength and high toughness Cu alloy with little characteristic anisotropy |
| US07/183,778 US4886641A (en) | 1987-04-28 | 1988-04-20 | Electrical contact spring material made of copper base alloy of high strength and toughness with reduced anisotropy in characteristics |
| DE3814439A DE3814439C2 (en) | 1987-04-28 | 1988-04-28 | Alloy for electrical contact springs made of a copper alloy and their use |
| KR1019880004846A KR940003504B1 (en) | 1987-04-28 | 1988-04-28 | Electrical contact spring material made of copper-base alloy of high strength and toughness with reduced anisotropy in characteristics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10592487A JPH0788545B2 (en) | 1987-04-28 | 1987-04-28 | High strength and high toughness Cu alloy with little characteristic anisotropy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63270436A true JPS63270436A (en) | 1988-11-08 |
| JPH0788545B2 JPH0788545B2 (en) | 1995-09-27 |
Family
ID=14420409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10592487A Expired - Lifetime JPH0788545B2 (en) | 1987-04-28 | 1987-04-28 | High strength and high toughness Cu alloy with little characteristic anisotropy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0788545B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0353036A (en) * | 1989-07-07 | 1991-03-07 | Trefimetaux | Copper-iron-cobalt-titanium alloy having high mechanical and electric characteristics and preparation thereof |
| JPH05214465A (en) * | 1992-02-03 | 1993-08-24 | Nippon Steel Corp | Metallic sheet minimal in anisotropy of characteristic and excellent in spring limit value and strength and its production |
| CN113718129A (en) * | 2021-08-30 | 2021-11-30 | 宁波金田铜业(集团)股份有限公司 | Chromium-zirconium-copper alloy and preparation method thereof |
-
1987
- 1987-04-28 JP JP10592487A patent/JPH0788545B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0353036A (en) * | 1989-07-07 | 1991-03-07 | Trefimetaux | Copper-iron-cobalt-titanium alloy having high mechanical and electric characteristics and preparation thereof |
| JPH05214465A (en) * | 1992-02-03 | 1993-08-24 | Nippon Steel Corp | Metallic sheet minimal in anisotropy of characteristic and excellent in spring limit value and strength and its production |
| CN113718129A (en) * | 2021-08-30 | 2021-11-30 | 宁波金田铜业(集团)股份有限公司 | Chromium-zirconium-copper alloy and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0788545B2 (en) | 1995-09-27 |
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