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Copper-aluminum-iron-manganese high-temperature shape memory alloy and preparation method thereof

A memory alloy, iron-manganese technology, which is applied in the field of copper-aluminum-iron-manganese (CuAlFeMn) high-temperature shape memory alloy and its preparation, can solve the problems of poor stability of shape memory effect, large phase transition hysteresis, loss of memory performance, etc., and achieve excellent shape Memory stability, excellent shape memory effect stability, effect of high martensitic transformation temperature

Active Publication Date: 2015-03-04
XIAMEN UNIV
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  • Application Information

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Problems solved by technology

However, the polycrystalline alloy of Cu-Al-Ni alloy is very brittle and fractures after only about 2% strain, and the stability of its shape memory effect is poor, so it is difficult to be practically applied; the thermal stability of Cu-Zn-A1 alloy Poor resistance, use at higher temperature will easily lead to loss of memory performance; although Cu-Al-Ag, Cu-Al-Co, Cu-Al-Zr, Cu-Al-Fe and Cu-Al-Nb alloys show high Martensitic transformation temperature, but the plasticity and stability of the alloy are poor; the phase transformation hysteresis of CuAl-Pd alloy is relatively large, and it has shown the characteristics of semi-thermoelastic martensitic transformation, and the shape memory effect is small

Method used

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  • Copper-aluminum-iron-manganese high-temperature shape memory alloy and preparation method thereof
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  • Copper-aluminum-iron-manganese high-temperature shape memory alloy and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0037] Embodiment 1: prepare Cu 78 Al 12 Fe 4 mn 6 High Temperature Shape Memory Alloy and Its Performance Test

[0038] Weigh 78% of copper with a purity of 99.9%, 12% of Al with a purity of 99.9%, 4% of iron with a purity of 99.9%, and 6% of manganese with a purity of 99.5%; put the above copper, aluminum, iron and manganese raw materials into In the vacuum melting furnace, vacuumize to 6.6×10 -3 Pa, filled with high-purity argon to 0.7×10 5 Pa, and then repeated smelting for 4 times to obtain copper aluminum iron manganese (CuAlFeMn) high temperature shape memory alloy ingots; the above prepared copper aluminum iron manganese (CuAlFeMn) high temperature shape memory alloy ingots were cut into cylindrical shapes by wire cutting Samples and sheet samples, the diameter of the cylindrical sample is 3mm, and the height is 5mm; the cylindrical sample and the sheet sample are put into a vacuum heat treatment furnace for heat treatment, the vacuum degree is 5Pa, and the heat t...

Embodiment 2

[0046] Embodiment 2: prepare Cu 77 al 11 Fe 4 mn 8 High Temperature Shape Memory Alloy and Its Performance Test

[0047] Weigh 77% of copper with a purity of 99.9%, 11% of Al with a purity of 99.9%, 4% of iron with a purity of 99.9%, and 8% of manganese with a purity of 99.5%; put the above copper, aluminum, iron and manganese raw materials into In the vacuum melting furnace, vacuumize to 6.6×10 -3 Pa, filled with high-purity argon to 0.7×10 5 Pa, and then repeated smelting for 4 times to obtain copper aluminum iron manganese (CuAlFeMn) high temperature shape memory alloy ingots; the above prepared copper aluminum iron manganese (CuAlFeMn) high temperature shape memory alloy ingots were cut into cylindrical shapes by wire cutting Samples and sheet samples, the diameter of the cylindrical sample is 3mm, and the height is 5mm; the cylindrical sample and the sheet sample are put into a vacuum heat treatment furnace for heat treatment, the vacuum degree is 5Pa, and the heat t...

Embodiment 3

[0055] Embodiment 3: prepare Cu 82 al 10 Fe 5 mn 3 High Temperature Shape Memory Alloy and Its Performance Test

[0056] Weigh 82% of copper with a purity of 99.9%, 10% of Al with a purity of 99.9%, 5% of iron with a purity of 99.9%, and 3% of manganese with a purity of 99.5%; put the above copper, aluminum, iron and manganese raw materials into In the vacuum melting furnace, vacuumize to 6.6×10 -3 Pa, filled with high-purity argon to 0.7×10 5 Pa, and then repeated smelting for 4 times to obtain copper aluminum iron manganese (CuAlFeMn) high temperature shape memory alloy ingots; the above prepared copper aluminum iron manganese (CuAlFeMn) high temperature shape memory alloy ingots were cut into cylindrical shapes by wire cutting Samples and sheet samples, the diameter of the cylindrical sample is 3mm, and the height is 5mm; the cylindrical sample and the sheet sample are put into a vacuum heat treatment furnace for heat treatment, the vacuum degree is 5Pa, and the heat t...

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Abstract

The invention relates to a copper-aluminum-iron-manganese high-temperature shape memory alloy and a preparation method thereof. The invention relates to a high-temperature shape memory alloy. The invention provides a copper-aluminum-iron-manganese high-temperature shape memory alloy with high martensitic phase-transformation temperature, stable extra-large shape memory effect and excellent stability thereof, good plasticity, and low cost. The invention also provides a preparation method thereof. The copper-aluminum-iron-manganese high-temperature shape memory alloy is composed of, by mass, 75- 83% of copper, 9-13% of aluminum, 3-6% of iron, and 2-9% of manganese. According to the invention, copper, aluminum, iron, and manganese raw materials are placed into a smelting furnace; the furnace is vacuumed, and argon is filled in; smelting is carried out under an argon atmosphere, such that a copper-aluminum-iron-manganese high-temperature shape memory ingot is obtained; the obtained copper-aluminum-iron-manganese high-temperature shape memory ingot cut into a sample; the obtained copper-aluminum-iron-manganese high-temperature shape memory ingot sample is subjected to a heat treatment, and is subjected to ice-water quenching, such that the copper-aluminum-iron-manganese high-temperature shape memory alloy is obtained.

Description

technical field [0001] The invention relates to a high-temperature shape-memory alloy, in particular to a low-cost, practical copper-aluminum-iron-manganese (CuAlFeMn) high-temperature shape-memory alloy with a stable super-large shape memory effect and a preparation method thereof. Background technique [0002] In recent years, scholars at home and abroad have conducted a lot of research on high-temperature shape memory alloys, and successively studied Ni-Ti-Pd, Ni-Ti-Hf / Zr, Ni-Al and Cu-Al bases and Ni-Mn-Ga, etc. High Temperature Shape Memory Alloys (1. Wang Yongqian, Zhao Liancheng, Research Progress of High Temperature Shape Memory Alloys, Functional Materials, 1995, 26(4): 377; 2. Peng Hongying, Wei Zhongguo, Yang Dazhi, Research Progress of High Temperature Shape Memory Alloys, Materials Science and Engineering, 1994, 12 (1): 5; 3, K.Otsuka, X.Ren, Recent development in the research of shape memory alloys, Intermetallics, 1999, 7:511; 4, J.Van Humbeeck, High temperatu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C9/01C22C9/05C22C1/02C22F1/08
Inventor 杨水源刘兴军王翠萍苏渝施展张锦彬黄艺雄
Owner XIAMEN UNIV
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