CN1056899A - Copper-based shape memory alloy - Google Patents
Copper-based shape memory alloy Download PDFInfo
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- CN1056899A CN1056899A CN 90104030 CN90104030A CN1056899A CN 1056899 A CN1056899 A CN 1056899A CN 90104030 CN90104030 CN 90104030 CN 90104030 A CN90104030 A CN 90104030A CN 1056899 A CN1056899 A CN 1056899A
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Abstract
A kind of aspects such as machinery, electric, the energy, aerospace, medical science, daily engineering that are applied to are used to make various causing or the copper-based shape memory alloy of the sensor of shape memory effect when temperature variation.High at the Ni-Ti base memorial alloy price that extensively adopts now, and shortcomings such as cheap copper-based memory alloy fatigue strength is low, shape memory poor stability, copper-aluminium-beryllium at the copper base is by increasing auxilliary added elements such as boron, chromium, titanium, rare earth in the shape memory alloy, improve the alloy crystal boundary, taked a whole set of novel rational melting, rolling, thermal treatment process improved simultaneously.The copper-based shape memory alloy performance is improved greatly, had higher practical and popularizing value.
Description
The present invention is a kind of machinery, electric, the energy, aerospace, medical science of being applied to, and aspects such as daily engineering are used to manufacture the various copper-based shape memory alloys that cause the sensor of shape memory effect in temperature variation.
Present shape memory alloy has multiple alloy system, and gold-cadmium is arranged, silver-cadmium, and indium-titanium, Ni-Ti system, the manganese base, the cerium base, Ni-based, copper base and iron-based etc.But use the most successfully, research is Ni-Ti system the most completely.Its memory capability, corrosion resistance nature, wear resistance, physiological compatibility, fatigue strength and work-ing life all are preferably.But owing to cost an arm and a leg, (per kilogram is more than 1500～3000 yuan) melting, CONTROL PROCESS complexity, general enterprise then can't make inquiries.It is extensive that copper-based memory alloy has material source, easily machine-shaping, and advantage such as memory capability is stronger, and manufacturing price is cheap, therefore noticeable.Copper-zinc-aluminium system is arranged, copper-aluminium-nickel system, copper-aluminium-beryllium system, several metal system such as copper-zinc-aluminium-manganese-nickel system in the copper base.What wherein the research application was more is copper-zinc-aluminium system and copper-aluminium-zinc system and copper-aluminium-nickel system, sees " mechanical engineering material " (1988 year fifth phase).Use seldom about copper-aluminium-beryllium system research, " Japanese industry material special issue " (nineteen eighty-three the 31st rolls up No. 1) has the discussion of this respect, and it has only the research of ternary alloy, the research of auxilliary added elements.The alloy memory performance improves little.Compare with the Ni-Ti base, copper base alloy is total, and to exist fatigue strength low, shape memory poor stability and easily produce shortcomings such as coarse-grain, grain boundary oxidation and crystal boundary brittle failure.
Above problem at the copper-based shape memory alloy existence, this alloy purpose is exactly with improved fatigue performance, strengthening crystal boundary bound energy, raising shape-memory properties and life-span is purpose, adopt and improve aluminium, beryllium proportioning composition, increase multiple auxilliary added elements, improve melting, rolling, thermal treatment process, make it be easy to practicality.Improve the alloy over-all properties.
This shape memory alloy provided by the invention, with copper, aluminium, beryllium as main added elements, aluminium content 7～15%(weight percent, down with), beryllium content 0.1～2%, in alloy, increased boron, chromium, titanium, these several elements of rare earth simultaneously as the auxilliary added elements of trace.The content of auxilliary added elements is boron 0.001～0.5%, chromium 0.01～0.5%, titanium 0.01～0.5%, rare earth 0.02～0.1%.Rare earth is lanthanum or cerium.
Shape memory alloy manufacture method of the present invention is:
1, melting mode is melting in argon gas or atmosphere, covers 1150～1250 ℃ of smelting temperatures during melting with alkaline covering agent; Insulating covering agent the best is to adopt sodium fluoroaluminate.
2, hot rolled all the time temperature be 650 °～900 ℃, be incubated 30 minutes (every time deformation ratio ≯ 10%); Afterwards, with material through 45 °～50 ℃ aqueous sulfuric acid pickling; Cold rolling process annealing is 760 °～800 ℃, is incubated 20 minutes (every time deformation ratio ≯ 5%); Cold rolling finishing through 760 °～800 ℃ annealing;
3, thermal treatment is air cooling (state 1) after 700 °～900 ℃ heating; Shrend or air cooling after 700 °～900 ℃ heating are in 50 °～300 ℃ timeliness 0.5～2 hour (state 2,3); Add heat setting type through 700 °～900 ℃, force to change under the shape in 0 °～300 ℃ to be incubated 1～200 minute, take exercise repeatedly 1～100 time.
Compare with existing copper-based shape memory alloy.It is good that this copper-aluminium provided by the invention-beryllium system adds the shape memory alloy memory performance of assisting added elements again.Around radius is 10 millimeters, and the unidirectional recovery rate in crooked 90 degree backs is bigger, under the thermal treatment process of recommending, recovery rate almost reaches 100%, its memory life-span is the highest in the daily copper base alloy, at the distortion angle is to thresh 100 its residual set angles of memory test under 30 degree to be not more than 0.5 degree, and almost be to recover fully, and price is very cheap, 1/10th also low for Ni-Ti base alloy.
The state 1,2,3 that different thermal treatment process produces is the memorial alloy of three kinds of different trades mark.State 1 is the memorial alloy of first kind of trade mark, and its characteristics are to have high memory capability and technology is most economical and save, by generally being adopted with one way memorial alloy component.State 2 and 3 is the memorial alloy of two kinds of trades mark, and it has optimum memory capability, after this art breading, can get the round trip memory capability.
The one way memorial alloy is used for external force deformation more, and under institute's temperature rating situation, workpiece deformation is specific shape, as self-tightening screw nail, and the self-tightening tube stub of installation dimension compactness, fusible cut-out etc.
The round trip memorial alloy is that workpiece can be changed into two different shapes when two differing temps values, as adopt copper-based memory alloy of the present invention to be rolled into 0.5～1.25mm thin slice, make the electrical contact contact elements with it, through experiment, its round trip memory life-span-be the contactor life-span can reach 10
4～10
6Inferior and do not have any declining and take off phenomenon.Basically reach the desired life-span of contactor.Because copper-based memory alloy each side advantage of the present invention is outstanding, is expected at mechanotronics, aspects such as the energy and space flight and aviation are applied.
Claims (5)
1, a kind of copper-based shape memory alloy, wherein with copper, aluminium, beryllium as main added elements.The content of main added elements aluminium is 7～15% (weight percents, down with), beryllium content 0.1～2%, and the invention is characterized in has increased boron, chromium, titanium, these several elements of rare earth as the auxilliary added elements of trace in the alloy.
2, shape memory alloy according to claim 1, its content that will be characterised in that auxilliary added elements is boron 0.001～0.5%, chromium 0.01～0.5%, titanium 0.01～0.5%, rare earth 0.02～0.5%.
3, shape memory alloy according to claim 1 and 2 is characterized in that the rare earth that adopts is lanthanum or cerium.
4, a kind of method of manufactured copper base marmem is characterized in that:
(1) melting mode is melting in argon gas or atmosphere, covers 1150～1250 ℃ of smelting temperatures during melting with alkaline covering agent;
(2) hot rolled all the time temperature be 650 °～900 ℃, be incubated 30 minutes (every time deformation ratio ≯ 10%), afterwards, through the pickling of 45 °～50 ℃ sulfuric acid aqueous fusion liquid, cold rolling process annealing is 760 °～800 ℃ annealing with material;
(3), thermal treatment is air cooling (state 1) after 700 °～900 ℃ heating; Shrend or air cooling after 700 °～900 ℃ heating are in 50 °～300 ℃ timeliness 0.5～2 hour (state 2,3); Add heat setting type through 700 °～900 ℃, force to change under the shape in 0 °～300 ℃ to be incubated 1～200 minute, exercise repeatedly 1～100 time.
5, manufacture method according to claim 5 is characterized in that the insulating covering agent of using is a sodium fluoroaluminate when melting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90104030 CN1056899A (en) | 1990-05-31 | 1990-05-31 | Copper-based shape memory alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90104030 CN1056899A (en) | 1990-05-31 | 1990-05-31 | Copper-based shape memory alloy |
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| CN1056899A true CN1056899A (en) | 1991-12-11 |
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| CN 90104030 Pending CN1056899A (en) | 1990-05-31 | 1990-05-31 | Copper-based shape memory alloy |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100507042C (en) * | 2007-07-20 | 2009-07-01 | 江阴鑫裕装潢材料有限有限公司 | Copper-aluminum-manganese-beryllium memory superelasticity alloy and producing method thereof |
| CN103972577A (en) * | 2014-04-03 | 2014-08-06 | 上海华篷防爆科技有限公司 | Power generation device provided with copper-based alloy hydrogen storage bottle |
| CN104197124A (en) * | 2014-09-19 | 2014-12-10 | 武汉凌达压缩机有限公司 | Air-conditioner and air suction-exhaust pipe thereof |
| CN104233134A (en) * | 2013-06-14 | 2014-12-24 | 镇江忆诺唯记忆合金有限公司 | Heat treatment method for increasing rolling wearability of copper zinc aluminium memory alloy under alkalescence |
| CN108695780A (en) * | 2018-06-14 | 2018-10-23 | 成都理工大学 | A kind of anti-slip memorial alloy power circuit pipe fitting |
| CN110117734A (en) * | 2019-06-10 | 2019-08-13 | 瑞安市强达不锈钢标准件有限公司 | A kind of processing technology of bolt |
| CN113718130A (en) * | 2020-05-26 | 2021-11-30 | 沈阳铸造研究所有限公司 | As-cast high-strength manganese-aluminum bronze alloy and preparation method thereof |
-
1990
- 1990-05-31 CN CN 90104030 patent/CN1056899A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100507042C (en) * | 2007-07-20 | 2009-07-01 | 江阴鑫裕装潢材料有限有限公司 | Copper-aluminum-manganese-beryllium memory superelasticity alloy and producing method thereof |
| CN104233134A (en) * | 2013-06-14 | 2014-12-24 | 镇江忆诺唯记忆合金有限公司 | Heat treatment method for increasing rolling wearability of copper zinc aluminium memory alloy under alkalescence |
| CN103972577A (en) * | 2014-04-03 | 2014-08-06 | 上海华篷防爆科技有限公司 | Power generation device provided with copper-based alloy hydrogen storage bottle |
| CN104197124A (en) * | 2014-09-19 | 2014-12-10 | 武汉凌达压缩机有限公司 | Air-conditioner and air suction-exhaust pipe thereof |
| CN108695780A (en) * | 2018-06-14 | 2018-10-23 | 成都理工大学 | A kind of anti-slip memorial alloy power circuit pipe fitting |
| CN110117734A (en) * | 2019-06-10 | 2019-08-13 | 瑞安市强达不锈钢标准件有限公司 | A kind of processing technology of bolt |
| CN113718130A (en) * | 2020-05-26 | 2021-11-30 | 沈阳铸造研究所有限公司 | As-cast high-strength manganese-aluminum bronze alloy and preparation method thereof |
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