EP0018818A1 - Alliages à base de cuivre, durcissables par précipitation - Google Patents
Alliages à base de cuivre, durcissables par précipitation Download PDFInfo
- Publication number
- EP0018818A1 EP0018818A1 EP80301407A EP80301407A EP0018818A1 EP 0018818 A1 EP0018818 A1 EP 0018818A1 EP 80301407 A EP80301407 A EP 80301407A EP 80301407 A EP80301407 A EP 80301407A EP 0018818 A1 EP0018818 A1 EP 0018818A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- copper alloy
- alloys
- precipitation hardenable
- chromium
- copper
- 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- Withdrawn
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
- C22C9/06—Alloys based on copper with nickel or cobalt as the next major constituent
Definitions
- This invention relates to precipitation and . dispersion hardening copper alloys and more particularly to precipitation hardening copper alloys that combine good mechanical and electrical properties.
- copper alloys are not susceptible to improvement in hardness and strength by heat treatment processes.
- One useful exception to this is the copper-beryllium alloys which are precipitation or age hardenable. These copper alloys, typically containing between 1 and 2% beryllium, are useful because of their non magnetic properties, good electrical-conductivity, high tensile strength, high degree of hardness, and their ability to be cast, wrought, forged or drawn. 'Because of these properties they find utility in the manufacture of various 'types of scientific instruments, electrical contact points, coil springs, non magnetic cutting tools and the like.
- Copper beryllium alloys have useful mechanical and electrical properties, their cost is comparatively high due to the scarceness of beryllium in the earth's crust. Of even greater concern, however is that it is now recognized that beryllium is an extremely toxic material and is a hazardous carcinogen. This makes it difficult to process copper beryllium alloys with conventional techniques without creating danger to the health of workers and without violating exposure standards as set by various governmental health organisations. Copper-beryllium alloys present a health hazard not only at the time of manufacturing the alloy, but also in subsequent operations which give rise to air borne metallic oxide dust particles.
- copper base alloys also tend to be deficient in certain respects.
- brasses, phosphor bronzes, nickel silvers and most copper alloys obtain their property increases through cold working, which decreases formability in proportion to the amount of cold work.
- Other dispersion hardening alloys have insufficient electrical conductivity to be useful in electrical applications.
- This invention provides a beryllium-free precipitation hardenable copper alloy that has mechanical and electrical properties similar to those ordinarily only obtained with copper-beryilium alloys.
- the copper alloys of the invention combine useful properties of tensile strength, yield strength, hardness, formability, corrosion resistance and resistance to fatigue, and electrical conductivity.
- a copper-nickel alloy includes minor quantities of silicon, chromium and aluminum.
- nickel is required and the practical upper limit from the standpoint of electrical conductivity is 9%.
- the silicon, chromium and aluminum are all essential, at least in small amounts, of from 0.05% to 2%. Within these limits, a large number of alloys can be made. No specific percentages can be given as ideal since, as is so often the case, an increase or decrease in a particular component is a trade off of one desirable property for another and the exact formulation selected will depend on the end use requirements.
- the total amount of silicon, aluminum and chromium however, preferably does not exceed 2%.
- a typically useful alloy with a good average range of properties comprises 4.5% nickel, 0.5 to 0.7% aluminum and silicon and 0.25% chromium. It may also be desirable to add trace amounts (i.e. up to 0.01%) of incidental elements such as lithium, boron or phosphorous for deoxidizing or fluidity purposes.
- the alloys of this invention have a very complex structure of the various pseudo-binary systems with copper as the base component and the other elements combined in various combinations as the other phases.
- the alloy has increased solubility at elevated temperatures and this alpha state can be maintained by rapidly quenching to room temperature, thereby creating an unstable, super saturated condition that only requires the proper temperature to precipitate the hardening phases.
- the alloys of this invention are readily hardenable, which is a time/temperature related function. For example, maximum hardness can be obtained in less than 2 hours if the alloys are heated to about 400 C., but, this time can be reduced to only about 15 seconds at a temperature of about 750° C .
- Table I shows typical property values of the alloys according to the invention.
- alloys having the constitution shown in Table II were made in accordance with this invention using standard techniques.
- Table III shows the variation in properties obtained for the alloys of Table II. The property data listed was obtained after heat ageing at 450°C for the times shown.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Conductive Materials (AREA)
- Electroplating And Plating Baths Therefor (AREA)
- Dental Preparations (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US3429179A | 1979-04-30 | 1979-04-30 | |
US34291 | 1993-03-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0018818A1 true EP0018818A1 (fr) | 1980-11-12 |
Family
ID=21875486
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP80301407A Withdrawn EP0018818A1 (fr) | 1979-04-30 | 1980-04-29 | Alliages à base de cuivre, durcissables par précipitation |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP0018818A1 (fr) |
JP (1) | JPS55158246A (fr) |
AU (1) | AU521823B2 (fr) |
DK (1) | DK186080A (fr) |
GB (1) | GB2051127B (fr) |
IE (1) | IE49710B1 (fr) |
NO (1) | NO154019C (fr) |
ZA (1) | ZA802595B (fr) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0436364A1 (fr) * | 1989-12-26 | 1991-07-10 | Ampco Metal Manufacturing Inc. | Alliage cuivre-nickel-silicium-chrome amélioré |
EP0552479A1 (fr) * | 1992-01-17 | 1993-07-28 | Wieland-Werke Ag | Procédé pour améliorer la flexibilité de demi-produits en alliage de cuivre |
US7182823B2 (en) | 2002-07-05 | 2007-02-27 | Olin Corporation | Copper alloy containing cobalt, nickel and silicon |
CN101984108A (zh) * | 2010-12-03 | 2011-03-09 | 中南大学 | 超高强、高抗应力松弛CuNiSiAl系弹性铜合金 |
CN103261460A (zh) * | 2010-12-13 | 2013-08-21 | 日本精线株式会社 | 铜合金线及铜合金弹簧 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58124254A (ja) * | 1982-01-20 | 1983-07-23 | Nippon Mining Co Ltd | 半導体機器のリ−ド材用銅合金 |
US20130333812A1 (en) * | 2010-12-13 | 2013-12-19 | Tohoku Techno Arch Co., Ltd. | Copper alloy and process for producing copper alloy |
JP6802689B2 (ja) * | 2016-11-11 | 2020-12-16 | 三芳合金工業株式会社 | 析出硬化型銅合金及びその製造方法 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2851353A (en) * | 1953-07-15 | 1958-09-09 | Ibm | Copper-base alloys |
GB1161610A (en) * | 1966-12-29 | 1969-08-13 | Langley Alloys Ltd | Improvements in Copper-Nickel-Silicon Alloys |
DE1558474A1 (de) * | 1967-03-01 | 1970-03-19 | Dies Dr Ing Kurt | Kupferlegierung und Verfahren zu ihrer Herstellung |
GB1408343A (en) * | 1973-03-02 | 1975-10-01 | Gni I Pi Splavov I | Alloy based on copper |
GB1422215A (en) * | 1973-03-02 | 1976-01-21 | Gni I Pi Spalavov I Obrabotki | Copper-based alloy |
-
1980
- 1980-04-29 GB GB8014065A patent/GB2051127B/en not_active Expired
- 1980-04-29 DK DK186080A patent/DK186080A/da not_active Application Discontinuation
- 1980-04-29 EP EP80301407A patent/EP0018818A1/fr not_active Withdrawn
- 1980-04-30 IE IE880/80A patent/IE49710B1/en unknown
- 1980-04-30 NO NO801272A patent/NO154019C/no unknown
- 1980-04-30 AU AU57930/80A patent/AU521823B2/en not_active Ceased
- 1980-04-30 ZA ZA00802595A patent/ZA802595B/xx unknown
- 1980-04-30 JP JP5775180A patent/JPS55158246A/ja active Granted
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2851353A (en) * | 1953-07-15 | 1958-09-09 | Ibm | Copper-base alloys |
GB1161610A (en) * | 1966-12-29 | 1969-08-13 | Langley Alloys Ltd | Improvements in Copper-Nickel-Silicon Alloys |
DE1558474A1 (de) * | 1967-03-01 | 1970-03-19 | Dies Dr Ing Kurt | Kupferlegierung und Verfahren zu ihrer Herstellung |
GB1408343A (en) * | 1973-03-02 | 1975-10-01 | Gni I Pi Splavov I | Alloy based on copper |
GB1422215A (en) * | 1973-03-02 | 1976-01-21 | Gni I Pi Spalavov I Obrabotki | Copper-based alloy |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0436364A1 (fr) * | 1989-12-26 | 1991-07-10 | Ampco Metal Manufacturing Inc. | Alliage cuivre-nickel-silicium-chrome amélioré |
EP0552479A1 (fr) * | 1992-01-17 | 1993-07-28 | Wieland-Werke Ag | Procédé pour améliorer la flexibilité de demi-produits en alliage de cuivre |
US7182823B2 (en) | 2002-07-05 | 2007-02-27 | Olin Corporation | Copper alloy containing cobalt, nickel and silicon |
US8257515B2 (en) | 2002-07-05 | 2012-09-04 | Gbc Metals, Llc | Copper alloy containing cobalt, nickel and silicon |
US8430979B2 (en) | 2002-07-05 | 2013-04-30 | Gbc Metals, Llc | Copper alloy containing cobalt, nickel and silicon |
CN101984108A (zh) * | 2010-12-03 | 2011-03-09 | 中南大学 | 超高强、高抗应力松弛CuNiSiAl系弹性铜合金 |
CN103261460A (zh) * | 2010-12-13 | 2013-08-21 | 日本精线株式会社 | 铜合金线及铜合金弹簧 |
CN103261460B (zh) * | 2010-12-13 | 2015-11-25 | 日本精线株式会社 | 铜合金线及铜合金弹簧 |
Also Published As
Publication number | Publication date |
---|---|
AU5793080A (en) | 1980-11-06 |
JPS55158246A (en) | 1980-12-09 |
ZA802595B (en) | 1981-04-29 |
NO154019C (no) | 1986-07-02 |
DK186080A (da) | 1980-10-31 |
NO154019B (no) | 1986-03-24 |
NO801272L (no) | 1980-10-31 |
AU521823B2 (en) | 1982-04-29 |
IE49710B1 (en) | 1985-11-27 |
JPS633938B2 (fr) | 1988-01-26 |
GB2051127B (en) | 1983-01-26 |
GB2051127A (en) | 1981-01-14 |
IE800880L (en) | 1980-10-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Designated state(s): AT BE CH DE FR IT LU NL SE |
|
17P | Request for examination filed |
Effective date: 19801209 |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: ENFIELD ROLLING MILLS LIMITED |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
18W | Application withdrawn |
Withdrawal date: 19880516 |
|
APAF | Appeal reference modified |
Free format text: ORIGINAL CODE: EPIDOSCREFNE |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: BURKETT, RICHARD ALLEN |