CN101886186A - High temperature shape memory copper alloy and preparation method thereof - Google Patents

High temperature shape memory copper alloy and preparation method thereof Download PDF

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CN101886186A
CN101886186A CN 201010226595 CN201010226595A CN101886186A CN 101886186 A CN101886186 A CN 101886186A CN 201010226595 CN201010226595 CN 201010226595 CN 201010226595 A CN201010226595 A CN 201010226595A CN 101886186 A CN101886186 A CN 101886186A
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shape memory
alloy
high temperature
copper alloy
temperature shape
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CN101886186B (en
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赵浩峰
何美琴
王玲
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Changshu Guli Technology Venture Service Co ltd
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Nanjing University of Information Science and Technology
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Abstract

The invention provides a high temperature shape memory copper alloy. The alloy comprises the following components in percentage by weight: 6 to 8 percent of Ni, 7 to 11 percent of Al, 0.5 to 0.9 percent of Sb, 2 to 5 percent of Mn, 0.03 to 0.09 percent of Gd, 0.05 to 0.5 percent of Dy, 0.005 to 0.02 percent of Y and the balance of Cu. The invention also provides a preparation method for the high temperature shape memory copper alloy. The high temperature shape memory copper alloy and the preparation method thereof have the advantages that: 1, due to the selection of proper components and content thereof, the produced alloy material has high performance and better high temperature shape memory performance under the combined action of the components; and 2, the alloy has simple and convenient preparation process and low production cost and is suitable for industrial production.

Description

A kind of high temperature shape memory copper alloy and preparation method thereof
Technical field
The present invention relates to a kind of high temperature shape memory copper alloy and preparation method thereof, belong to metal material field.
Background technology
In the metal current material field, the shape-memory properties of copper alloy has been subjected to increasing attention.
Chinese patent CN200610161600.1 discloses a kind of copper-zinc-aluminum shape memory alloy abrasion resistance material and preparation method thereof, the preparing technical field that relates to a kind of shape memory alloy material, the preparation method is: with electrolytic copper, 0# zinc, 00# aluminium, electrolytic nickel is starting material, add the compound rare-earth fining agent by composition proportion and carry out melting, when the alloy liquid temp reaches 1230 ℃~1250 ℃, pour into ingot casting, be heated to 800 ℃~820 ℃ the insulation 24 hours after furnace cooling, remove the dezincify layer of surface 2~3mm then, forge into sheet material again, under 830~870 ℃+130~170 ℃+40~60 ℃ conditions, carry out the thermal treatment of two-stage timeliness.Copper-zinc-aluminum shape memory alloy abrasion resistance material by mass percentage, Zn24.5%~26%, Al3.7%~3.8%, the compound rare-earth fining agent of Ni0.9%~1.0%, 0.06%~0.09%, the composition of compound rare-earth fining agent is in mass percent, be La45.5%, Ce44.9%, Gd7.7%, Nd1.9%, Yu Weitong.Chinese patent CN200810019822.9 discloses a kind of method that improves composite rare earth copper-zinc-aluminum shape memory alloy double-pass memory effect.It is characterized by: the preparation composite rare earth copper-zinc-aluminum shape memory alloy, its chemical ingredients (weight percent) is Zn22%-26%, Al3%-4%, special composite rare-earth modifier 0.2%-0.6%, Yu Weitong.Pouring into diameter after the melting is
Figure BSA00000189759800021
Ingot casting.Anneal is to be heated to 820 ℃ of insulations furnace cooling after 24 hours, removes the dezincify layer of surperficial 2-3mm then, forges the thick sheet material to 11mm again, is rolled into the 0.3mm thin plate at last.Thermal treatment process is set, its concrete technology is: 820 ℃-850 ℃ insulations are quenched after 20-40 minute in the room temperature oil, carry out in the 140-160 ℃ of oil in insulation 20-40 minute, the 90-100 ℃ water 20-30 minute three grades of ageing treatment of insulation in insulation 20-30 minute, the 40-50 ℃ water more successively.The prestrain amount of choosing is respectively to be 15%.Circulatory mediator is respectively 100 ℃ of oil and room temperature water.Under this processing parameter, carry out 20 constraint circuit training.More than two kinds of memorial alloys owing to all use a large amount of zinc, therefore be difficult to improve the Martensite Transformation temperature.
Chinese patent CN200710009646.6 discloses a kind of nickel manganin gallium high-temperature shape memory alloy and preparation method thereof, relates to a kind of alloy.Provide a kind of high martensitic transformation temperature that has, better nickel manganin gallium high-temperature shape memory alloy of plasticity and preparation method thereof.Its composition and be nickel 50%~57%, manganese 17%~25%, copper 1%~8%, gallium 17%~25% by the content of atomic percent.Nickel, manganese, copper and gallium are put into stove, vacuumize and charge into the argon gas melting, get the nickel manganin gallium high-temperature shape memory alloy ingot; With the thermal treatment of alloy ingot, temperature is 850~900 ℃, furnace cooling; To the nickel manganin gallium high-temperature shape memory alloy ingot be rolled into the sheet alloy material through heat treated nickel manganin gallium high-temperature shape memory alloy ingot 850~950 ℃ of hot rollings; The sheet alloy material that obtains is cut into sample with wire cutting method, and after the thermal treatment, ice water quenching promptly obtains nickel manganin gallium high-temperature shape memory alloy.The amount that adds gallium in the above-mentioned memorial alloy is very high, because the cost of gallium is very high, therefore causes production cost to strengthen.Gallium and compound thereof are poisonous in addition, and toxicity is considerably beyond mercury and arsenic.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art part, a kind of high temperature shape memory copper alloy and preparation method thereof is provided.
High temperature shape memory copper alloy of the present invention comprises following ingredients according to weight percent: Ni 6%~8%, and Al 7~11%, Sb 0.5%~0.9%, and Mn 2%~5%, and Gd 0.03%~0.09%, Dy 0.05%~0.5%, and Y 0.005%~0.02%, and all the other are Cu.
Preferably,
High temperature shape memory copper alloy of the present invention comprises following ingredients according to weight percent:
Ni 7%, and Al 9%, and Sb 0.7%, and Mn 3%, and Gd 0.06%, and Dy 0.2%, and Y 0.01%, and all the other are Cu.
The matrix densification of copper alloy, disperse is distributed with tiny compound phase on the matrix.
The selection of the content of each composition of alloy of the present invention and composition thereof is based on the following reasons:
Ni: content is 6%~8%, and Ni and Cu, Al form the matrix of shape memory alloy; Ni content is lower than 6%, does not reach effect; Ni content is higher than 8%, and Ni can too much consume Al and form the NiAl intermediate compound, reduces to reach steady periodic response rate;
Al: content is 7%~11%, and Al and Cu, Ni form the matrix of shape memory alloy; Al content is lower than 7%, does not reach effect; Al content is higher than 11%, forms too much γ 2 phases, reduces to reach steady periodic response rate;
Sb: content is 0.5%~0.9%; Sb forms chemical combination mutually with Cu, Mn.Sb content is lower than 0.5%, does not reach effect; Sb content is higher than 0.9%, and compound is mutually too much, can reduce the plasticity and the tensile strength of alloy, because Sb increases, compound forms netted on crystal boundary, reduces the toughness of material.
Mn: content is 2%~5%; Mn forms chemical combination mutually with Sb, Cu.Mn content is lower than 2%, does not reach effect; Mn content is higher than 5%, and compound is mutually too much, can reduce the plasticity and the tensile strength of alloy, because Mn increases, compound forms netted on crystal boundary, reduces the toughness of material.
Gd: content is 0.03%~0.09%, and Gd has the effect of rounding compound phase, and this has good antifriction function mutually, and the alloy strengthening effect is arranged simultaneously.But Gd, Dy and Y acting in conjunction be refinement complex compound particle not only, and the effect of energy refinement matrix, can reduce the tendency of copper base alloy by grain refining, thereby improve the ductility and the anti-fatigue performance of alloy, improve the stability of shape memory along the crystalline substance fracture.Gd content is lower than 0.03%, does not reach effect; Gd content is higher than 0.09%, because Gd is a rare earth element, too much uses, and not only improves material cost, also can form some excessive compounds, reduces the mechanical property of material.
Dy: content is 0.05%~0.5%; But Dy and Gd, Y acting in conjunction be refinement complex compound particle not only, and the effect of energy refinement matrix, can reduce the tendency of copper base alloy by grain refining, thereby improve the ductility and the anti-fatigue performance of alloy, improve the stability of shape memory along the crystalline substance fracture.Dy content is lower than 0.05%, does not reach effect; Dy content is higher than 0.5%, because Dy is a rare earth element, too much uses, and not only improves material cost, also can form some excessive compounds, reduces the mechanical property of material.
Y: content is 0.005%~0.02%; But Y and Gd, Dy acting in conjunction be refinement complex compound particle not only, and the effect of energy refinement matrix, can reduce the tendency of copper base alloy by grain refining, thereby improve the ductility and the anti-fatigue performance of alloy, improve the stability of shape memory along the crystalline substance fracture.Y content is lower than 0.005%, does not reach effect; Y content is higher than 0.02%, because Y is a rare earth element, too much uses, and not only improves material cost, also can form some excessive compounds, reduces the mechanical property of material.
The preparation method of high temperature shape memory copper alloy of the present invention comprises the following steps:
1) prepare the raw material of each component, Al electrolysis aluminium sheet wherein, Cu electrolysis copper rod, Ni, Mn ingot metal, Sb, Gd, Dy, Y all use pure metal particles;
2) raw material is placed process furnace carry out melting, smelting temperature is 1110-1190 ℃, obtains cast alloy; And then remelting makes its homogenizing, and smelting temperature is 1160-1190 ℃, and casting is into about the thick sheet of 4mm after the remelting;
3) with melted sheet alloy homo genizing annelaing under 830-860 ℃ condition, annealing time is 6-8h; After annealing finishes, cut into the square of 8mm-12mm, promptly obtain high temperature shape memory copper alloy.
High temperature shape memory copper alloy of the present invention and preparation method thereof has following technique effect:
1, owing to selected composition and the content thereof that is fit to for use, acting in conjunction between each composition, the alloy material performance of production is good, have better high-temperature shape-memory performance;
2, alloy preparation technology is easy, and production cost is low, is convenient to very much suitability for industrialized production.
Description of drawings
The metallographic structure of the high temperature shape memory copper alloy that Fig. 1 makes for the embodiment of the invention 1.
Embodiment
Embodiment 1
The high temperature shape memory copper alloy of present embodiment comprises following ingredients Ni 6% according to weight percent, and Al 7%, and Sb 0.5%, and Mn 2%, and Gd 0.03%, and Dy 0.05%, and Y 0.005%, and all the other are Cu.Have tiny and dispersive compound phase on this high temperature shape memory copper alloy, as shown in Figure 1.
The preparation of the high temperature shape memory copper alloy of present embodiment comprises the following steps:
1) prepare the raw material of each component, Al electrolysis aluminium sheet wherein, Cu electrolysis copper rod, Ni, Mn ingot metal, Sb, Gd, Dy, Y all use pure metal particles;
2) raw material is placed process furnace carry out melting, smelting temperature is 1110-1190 ℃, obtains cast alloy; And then remelting makes its homogenizing, and smelting temperature is 1160-1190 ℃, and casting is into about the thick sheet of 4mm after the remelting;
3) with melted sheet alloy homo genizing annelaing under 830-860 ℃ condition, annealing time is 6-8h; After annealing finishes, cut into the square of 8mm-12mm, promptly obtain high temperature shape memory copper alloy.
Embodiment 2
The high temperature shape memory copper alloy of present embodiment comprises following ingredients according to weight percent: Ni 8%, and Al 11%, and Sb 0.9%, and Mn 5%, and Gd 0.09%, and Dy 0.5%, Y0.02%, and all the other are Cu.Have tiny and crystal grain dispersive on this high temperature shape memory copper alloy, the preparation method is with reference to embodiment 1.
Embodiment 3
The high temperature shape memory copper alloy of present embodiment comprises following ingredients according to weight percent: Ni 7%, and Al 9%, and Sb 0.7%, and Mn 3%, and Gd 0.06%, and Dy 0.2%, and Y 0.01%, and all the other are Cu.Have tiny and dispersive compound phase on this high temperature shape memory copper alloy, the preparation method is with reference to embodiment 1.
Reference examples 1
The high temperature shape memory copper alloy of this reference examples comprises following ingredients according to weight percent: Ni 5%, and Al 6%, and Sb 0.4%, and Mn 1%, and Gd 0.02%, and Dy 0.04%, and Y 0.004%, and all the other are Cu.The preparation method is with reference to embodiment 1.
Reference examples 2
The high temperature shape memory copper alloy of this reference examples comprises following ingredients according to weight percent: Ni 9%, and Al 12%, and Sb 1.0%, and Mn 6%, and Gd 0.1%, and Dy 0.6%, Y0.03%, and all the other are Cu.The preparation method is with reference to embodiment 1.
Embodiment 4
Relatively the contrary martensitic transformation temperature of the high temperature shape memory copper alloy among background technology, reference examples and the embodiment, reach response rate and maximum elongation at break when stablizing, its result is as shown in table 1:
The contrast of table 1 alloy property:
Figure BSA00000189759800071
As can be seen from the above table, the high temperature shape memory copper alloy of embodiment 1-3 reach response rate when stablizing, maximum elongation at break and contrary martensitic transformation temperature, all be better than reference examples and background technology, high temperature shape memory copper alloy of the present invention has better alloy property.

Claims (3)

1. a high temperature shape memory copper alloy is characterized in that, comprises following ingredients according to weight percent: Ni 6%~8%, and Al 7~11%, Sb 0.5%~0.9%, and Mn 2%~5%, and Gd 0.03%~0.09%, Dy 0.05%~0.5%, and Y 0.005%~0.02%, and all the other are Cu.
2. high temperature shape memory copper alloy according to claim 1 is characterized in that, comprises following ingredients according to weight percent: Ni 7%, and Al 9%, and Sb 0.7%, Mn3%, and Gd 0.06%, and Dy 0.2%, and Y 0.01%, and all the other are Cu.
3. the preparation method of a high temperature shape memory copper alloy is characterized in that, comprises the following steps:
1) prepare the raw material of each component, Al electrolysis aluminium sheet wherein, Cu electrolysis copper rod, Ni, Mn ingot metal, Sb, Gd, Dy, Y all use pure metal particles;
2) raw material is placed process furnace carry out melting, smelting temperature is 1110-1190 ℃, obtains cast alloy; And then remelting makes its homogenizing, and smelting temperature is 1160-1190 ℃, and casting is into about the thick sheet of 4mm after the remelting;
3) with melted sheet alloy homo genizing annelaing under 830-860 ℃ condition, annealing time is 6-8h; After annealing finishes, cut into the square of 8mm-12mm, promptly obtain high temperature shape memory copper alloy.
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102051549A (en) * 2011-01-14 2011-05-11 南京信息工程大学 Heat-resistant copper alloy material and preparation method thereof
CN102174673A (en) * 2011-03-01 2011-09-07 广西大学 Roasting reduction method for manganese ore
CN102808105A (en) * 2012-08-24 2012-12-05 李伟 Method for preparing shape memory copper alloy
CN102808106A (en) * 2012-08-24 2012-12-05 李伟 Shape memory alloy
CN103215471A (en) * 2013-01-28 2013-07-24 厦门大学 Copper-aluminum-iron-manganese high-temperature shape memory alloy and preparation method thereof
CN107287469A (en) * 2017-06-22 2017-10-24 合肥汇之新机械科技有限公司 A kind of copper system marmem
CN109185879A (en) * 2018-08-28 2019-01-11 北京华通兴远供热节能技术有限公司 A kind of low nitrogen gas burner of heat pipe-type

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Publication number Priority date Publication date Assignee Title
JP2004010997A (en) * 2002-06-10 2004-01-15 Chuo Spring Co Ltd High damping material, spring having excellent damping property and methods of producing them
CN1644728A (en) * 2005-01-13 2005-07-27 四川大学 Production of CuALNiMn shape memory alloy thin membrane by cold rolling superthin laminated alloy
CN101033516A (en) * 2006-12-29 2007-09-12 江苏大学 Copper-zinc-aluminum shape memory alloy abrasion resistance material and manufacturing method for the same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004010997A (en) * 2002-06-10 2004-01-15 Chuo Spring Co Ltd High damping material, spring having excellent damping property and methods of producing them
CN1644728A (en) * 2005-01-13 2005-07-27 四川大学 Production of CuALNiMn shape memory alloy thin membrane by cold rolling superthin laminated alloy
CN101033516A (en) * 2006-12-29 2007-09-12 江苏大学 Copper-zinc-aluminum shape memory alloy abrasion resistance material and manufacturing method for the same

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102051549A (en) * 2011-01-14 2011-05-11 南京信息工程大学 Heat-resistant copper alloy material and preparation method thereof
CN102174673A (en) * 2011-03-01 2011-09-07 广西大学 Roasting reduction method for manganese ore
CN102808105A (en) * 2012-08-24 2012-12-05 李伟 Method for preparing shape memory copper alloy
CN102808106A (en) * 2012-08-24 2012-12-05 李伟 Shape memory alloy
CN102808105B (en) * 2012-08-24 2014-11-26 朱育盼 Method for preparing shape memory copper alloy
CN102808106B (en) * 2012-08-24 2015-04-22 戴初发 Shape memory alloy
CN103215471A (en) * 2013-01-28 2013-07-24 厦门大学 Copper-aluminum-iron-manganese high-temperature shape memory alloy and preparation method thereof
CN103215471B (en) * 2013-01-28 2015-03-04 厦门大学 Copper-aluminum-iron-manganese high-temperature shape memory alloy and preparation method thereof
CN107287469A (en) * 2017-06-22 2017-10-24 合肥汇之新机械科技有限公司 A kind of copper system marmem
CN109185879A (en) * 2018-08-28 2019-01-11 北京华通兴远供热节能技术有限公司 A kind of low nitrogen gas burner of heat pipe-type

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