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应用科学学报 ›› 2003, Vol. 21 ›› Issue (1): 107-110.

• 论文 • 上一篇    

冷热循环对CuZnAl形状记忆合金性能的影响

司乃潮, 刘海霞, 祁隆飙   

  1. 江苏大学材料科学与工程学院 江苏 镇江 212013
  • 收稿日期:2002-01-14 修回日期:2002-05-14 出版日期:2003-03-10 发布日期:2003-03-10
  • 作者简介:司乃潮(1955-),男,浙江杭州人,教授.
  • 基金资助:
    江苏省自然科学基金资助项目(BK2001091)

Effects of Thermal Cycles on the Properties of CuZnAl Shape Memory Alloys

SI Nai-chao, LIU Hai-xia, QI Long-biao   

  1. School of Material Science and Engineering, Jiangsu University, Zhenjiang 212013, China
  • Received:2002-01-14 Revised:2002-05-14 Online:2003-03-10 Published:2003-03-10

PDF

77

被引次数

11

摘要： 采用不同的热循环温度、不同的预应变量ε、不同的复合稀土加入量以及透射电镜方法,研究了冷热循环对CuZnAl形状记忆合金的相变温度、记忆性能的影响.研究结果表明,冷热循环使合金的相变温度提高5~6℃.增大合金的预应变量ε,会减少达到稳定双程形状记忆性能的循环训练次数,同时合金的形状回复率有所提高,但预变形量大于3.6%以后,合金的形状回复率下降.合金中加入复合稀土量小于0.10%时,对合金的记忆性能影响不大,但未加复合稀土的合金,冷热循环大于1800次以后,其形状记忆性能开始下降.

关键词: 形状记忆性能, 预应变量, 相变温度, 冷热循环, 形状记忆合金

Abstract: The effects of thermal cycles on the properties of CuZnAl shape memory alloys under different heating temperatures, pre-deformations ε and amounts of complex rare earth mixture added were researched with electronic microscopes. The results indicate that thermal cycles can increase the transformation temperature Ms of the alloys by 5-6℃. Increasing the pre-deforma-tion ε will decrease the necessary cycle times for stable two-way-shape memory property. However the shape recovery rate of the alloys will decrease when the pre-deformation exceeds 3.6%. The shape memory property of the alloys will change insignificantly if the amount of rare earth added is less than 0.10%. But the alloys without rare earth will have worse shape memory property after thermal cycles reach 1800 times.

Key words: shape memory property, pre-deformation, transformation temperature, thermal cycle, shape memory alloy

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