CN1045130A - But the gold shape-memory alloy of machine-shaping and manufacturing thereof - Google Patents

But the gold shape-memory alloy of machine-shaping and manufacturing thereof Download PDF

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Publication number
CN1045130A
CN1045130A CN 90100085 CN90100085A CN1045130A CN 1045130 A CN1045130 A CN 1045130A CN 90100085 CN90100085 CN 90100085 CN 90100085 A CN90100085 A CN 90100085A CN 1045130 A CN1045130 A CN 1045130A
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China
Prior art keywords
shape
gold
memory alloy
memory
alloy
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Withdrawn
Application number
CN 90100085
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Chinese (zh)
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CN1017633B (en
Inventor
张如祥
张进修
林光明
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Sun Yat Sen University
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Sun Yat Sen University
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Publication date
Application filed by Sun Yat Sen University filed Critical Sun Yat Sen University
Priority to CN 90100085 priority Critical patent/CN1017633B/en
Publication of CN1045130A publication Critical patent/CN1045130A/en
Publication of CN1017633B publication Critical patent/CN1017633B/en
Expired legal-status Critical Current

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  • Display Devices Of Pinball Game Machines (AREA)
  • Cosmetics (AREA)

Abstract

But the gold shape-memory alloy of machine-shaping and manufacturing thereof.
The present invention relates to a kind of gold shape-memory alloy and manufacturing thereof, treatment process.This alloy mainly is made up of gold, copper, zinc, aluminium, adds trace elements such as cobalt again, and its highest containing metal can reach 18K.It can be processed into connector, fastening piece in shape memory gold jewelry that thin slice, silk, strip, tabular and various its shape can change with temperature, artwork ornaments, the electronics, the shape memory tooth sheet of the usefulness of having a denture made etc.Utilize its super-elasticity also to can be made into the various jewellery that comfort arranged, brooch etc.

Description

But the gold shape-memory alloy of machine-shaping and manufacturing thereof
The present invention relates to a kind of gold shape-memory alloy and manufacture method thereof.
Because the thermoelastic martensitic transformation in the shape memory alloy can be remembered the shape before and after the phase transformation, thereby becomes a kind of useful functional materials.At present shape memory alloy that can practicability mainly is Ti-Ni alloy and copper base alloy, they can both bear cold working and thermal distortion, and the common gold shape-memory alloy that contains, as golden cadmium (AuCd), AuCuZn, TiNiAu etc., find so far since the fifties and initial stage in the sixties, owing to fail to solve its fragility, can't bear cold working and thermal distortion, thereby not have practical value.
The objective of the invention is to develop a kind of gold shape-memory alloy, it can bear hot and cold shaping, and roll into thin slice, pull into filament and make plate, strip material, and can shape to different shape memory jewellery etc.
The present invention controls wherein electron density by changing component and the content thereof in the alloy, makes to contain gold alloy and both had shape memory function, can change the crisp performance of its matter again, and by changing thermal treatment process, the transformation temperature of regulating it is regulated the temperature variant temperature range of its shape to reach.
The major ingredient content (weight percent) of the gold shape-memory alloy that the present invention developed is as follows:
The Au(gold): 25~75% Cu(copper): 5~55%
Zn(zinc): 5~28% Al(aluminium): 0~6%
Other trace elements have: iron (Fe), cobalt (Co), vanadium (V), silicon (Si), boron (B) etc., and all less than 0.1%.
The electron density of alloy is 1.35~1.45 than scope.
The manufacturing process flow of the gold shape-memory alloy that the present invention relates to is as follows:
Batching-high frequency melting-casting-hot-work-cold working (cold rolling or cold group)-thermal treatment is done into strips or board-like material, and melting wherein and casting are all carried out under argon shield, and smelting temperature is 1000 ℃ to 1100 ℃, and hot processing temperature is 600 ℃ to 800 ℃; Rolling or wire drawing speed is 0.5 meter/minute to 5 meters/minute, passage amount of finish 1% to 5%.
The used thermal treatment process of the present invention is as follows:
Solution treatment: 700 ℃~800 ℃, shrend.
Shape memory is handled: 700~800 ℃ of insulations 5~10 minutes, quench into 70 ℃ to 180 ℃ liquid medium, and be incubated 10~30 minutes.Hardening.
The shape-memory properties of alloy of the present invention is as follows:
One way memory reply volume: 80~100%.
Round trip memory reply volume: 60~85%, in 1000 thermal cyclings after this, there is not obviously decline.
Super-elasticity (claiming pseudoelasticity again) deflection: 8%.
Having wide range of applications of gold shape-memory alloy can be used for jewellery class such as ring, necklace, brooch etc., and its shape can change with temperature; Can be used for arts and crafts again and decorate category such as shape memory golden flower, shape memory lamp decoration etc.; The sheet etc. of having a denture made in the connector that also can be used for electrically contacting, fastening piece, the dentistry.
Embodiments of the invention one:
The 12K gold shape-memory alloy:
Major ingredient: (following is the weight percent of this alloy)
Au:50% Cu:33%
Zn:13% Al:4%
Add trace elements iron, cobalt, vanadium, silicon, boron etc., all less than 0.1%.
Melting, complete processing, thermal treatment, shape memory are handled as hereinbefore.
Transformation temperature scope: 0 ℃ to 65 ℃.
Embodiment two.
The 16K gold shape-memory alloy:
Major ingredient:
Au:65% Cu:21%
Zn:10.5% Al:3.5%
Add trace element with embodiment one.
Melting: complete processing, thermal treatment and shape memory are handled as hereinbefore.
Transformation temperature :-10 ℃ to 70 ℃.
Embodiment three.
The 18K gold shape-memory alloy:
Major ingredient:
Au:74% Cu:14%
Zn:8.7% Al:3.3%
Add trace element with embodiment one.
Melting, complete processing, thermal treatment and shape memory are handled as hereinbefore
Transformation temperature :-20 ℃ to 80 ℃.

Claims (5)

1, a kind of gold shape-memory alloy that shapes is characterized in that its major ingredient weight percent is:
Au: 25~75% Cu: 5~55%
Zn: 5~28% Al: 0~6%
Other trace elements have: Fe, Co, V, Si, B, and all less than 0.1%.
2, a kind of gold shape-memory alloy as claimed in claim 1 is characterized in that the weight percent of its major ingredient is:
Au:50% Cu:33%
Zn:13% Al:4%
3, a kind of gold shape-memory alloy as claimed in claim 1 is characterized in that the weight percent of its major ingredient is:
Au:65% Cu:21%
Zn:10.5% Al:3.5%
4, a kind of gold shape-memory alloy as claimed in claim 1 is characterized in that the weight percent of its major ingredient is:
Au:74% Cu:14%
Zn:8.7% Al:3.3%
5, a kind of manufacture method as claim 1,2,3,4 described gold shape-memory alloys is characterized in that manufacturing process flow is as follows:
-batching-high frequency melting-casting-hot-work-cold working (cold rolling or cold-drawn)
Thermal treatment (comprising the processing of solution treatment and shape memory) is done into strips or panel material, and melting wherein and casting are all carried out under argon shield, and smelting temperature is 1000 ℃ to 1100 ℃, and hot processing temperature is 600 ℃ to 800 ℃; Admittedly molten treatment temp is 700 ℃~800 ℃, shrend, shape memory is treated to 700 ℃~800 ℃ insulations 5~10 minutes, quenches into 70 ℃ to 180 ℃ liquid medium, is incubated 10~30 minutes hardening.
CN 90100085 1990-01-05 1990-01-05 Gold marmen able to be shaped and process for manufacturing same Expired CN1017633B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 90100085 CN1017633B (en) 1990-01-05 1990-01-05 Gold marmen able to be shaped and process for manufacturing same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 90100085 CN1017633B (en) 1990-01-05 1990-01-05 Gold marmen able to be shaped and process for manufacturing same

Publications (2)

Publication Number Publication Date
CN1045130A true CN1045130A (en) 1990-09-05
CN1017633B CN1017633B (en) 1992-07-29

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CN 90100085 Expired CN1017633B (en) 1990-01-05 1990-01-05 Gold marmen able to be shaped and process for manufacturing same

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CN (1) CN1017633B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015030155A1 (en) * 2013-08-30 2015-03-05 国立大学法人東京工業大学 Superelastic alloy
CN105008561A (en) * 2012-12-03 2015-10-28 Argor-Heraeus股份有限公司 Discoloration-resistant gold alloy
CN106756197A (en) * 2017-01-17 2017-05-31 深圳市诺珠宝有限公司 A kind of billon and preparation method thereof
CN107586990A (en) * 2017-09-04 2018-01-16 钱友静 A kind of constant decoration goldleaf of high brightness color and luster
CN111032891A (en) * 2017-08-22 2020-04-17 国立大学法人东京工业大学 Artifact-free superelastic alloy

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105008561A (en) * 2012-12-03 2015-10-28 Argor-Heraeus股份有限公司 Discoloration-resistant gold alloy
CN105008561B (en) * 2012-12-03 2018-07-03 Argor-Heraeus股份有限公司 The billon of anti-colour fading
US10683570B2 (en) 2012-12-03 2020-06-16 Argor-Heraeus Sa Discoloration-resistant gold alloy
WO2015030155A1 (en) * 2013-08-30 2015-03-05 国立大学法人東京工業大学 Superelastic alloy
JP2015048485A (en) * 2013-08-30 2015-03-16 国立大学法人東京工業大学 Superelastic alloy
CN105492636A (en) * 2013-08-30 2016-04-13 国立大学法人东京工业大学 Superelastic alloy
US10590519B2 (en) 2013-08-30 2020-03-17 Tanaka Kikinzoku Kogyo K.K. Superelastic alloy
CN106756197A (en) * 2017-01-17 2017-05-31 深圳市诺珠宝有限公司 A kind of billon and preparation method thereof
CN111032891A (en) * 2017-08-22 2020-04-17 国立大学法人东京工业大学 Artifact-free superelastic alloy
CN111032891B (en) * 2017-08-22 2022-03-01 国立大学法人东京工业大学 Artifact-free superelastic alloy
CN107586990A (en) * 2017-09-04 2018-01-16 钱友静 A kind of constant decoration goldleaf of high brightness color and luster

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Publication number Publication date
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