电脉冲处理对固溶态Fe14Mn6Si8Cr5Ni合金形状记忆效应的影响

杨世洲; 李宁; 文玉华

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工程科学与技术:2010,42(2):232-236

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电脉冲处理对固溶态Fe14Mn6Si8Cr5Ni合金形状记忆效应的影响

杨世洲^1,2, 李宁³, 文玉华³

(1．四川大学制造科学与工程学院，四川成都 610065;2．西华大学材料科学与工程学院，四川成都 610039;3.四川大学制造科学与工程学院)

Effect of Electropulsing Treatment on the Shape Memory Effect of Fe14Mn6Si8Cr5Ni Solid Solution Alloy

Yang Shizhou^1,2, Li Ning³, Wen Yuhua³

(1. School of Manufacture Sci. and Eng., Sichuan Univ., Chengdu 610065, China;2. School of Material Sci.and Eng.,Xihua Univ., Chengdu 610039, China;3.School of Manufacture Sci. and Eng., Sichuan Univ.)

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投稿时间：2009-04-20 修订日期：2009-06-25

中文摘要: 为了提高固溶态Fe14Mn6Si8Cr5Ni合金的形状记忆效应，对不同参数的电脉冲对合金显微组织及形状回复率的影响进行研究。结果表明，固溶态Fe14Mn6Si8Cr5Ni合金经300 V、1100 μF，5 Hz电脉冲作用10次，其形状回复率从无电脉冲作用下的44.3%提高到55.9%，提高了26.2%；作用50次，其形状回复率提高到最大值59.6%，提高了34.5%。经金相显微组织分析发现，大能量电脉冲作用可以使合金中热诱发ε马氏体数量减少，奥氏体数量增多，再经5%拉伸后的应力诱发ε马氏体数量更多，更细小。并对电脉冲作用促使固溶态Fe14Mn6Si8Cr5Ni合金形状记忆效应得到提高的机理进行了讨论。

中文关键词: 电脉冲处理固溶态形状记忆效应形状回复率

Abstract:In order to improve the shape memory effect of Fe14Mn6Si8Cr5Ni solid solution alloy, the effects of different electropulsing treatment on its microstructure and shape recovery ratio were investigated . The results showed that the shape recovery ratio of the alloy subjected to electropulsing treatment at 300 V, 1100 μf, 5 Hz for 10 times reached 55.9%, 26.2% greater than that without electropulsing treatment. In addition, it was found by metallurgical structure analysis that electropulsing treatment with great energy leaded to the decrease of thermo-induced ε-martensite and increase of austenite, and the amount of stress-induced ε-martensite in alloy following 5% tensile deformation was much more and their size was smaller. The mechanism that electropulsing treatment improved the shape memory effect of Fe14Mn6Si8Cr5Ni solid solution alloy was further discussed.

keywords: electropulsing treatment solid solution shape memory effect (SME) shape recovery ratio

文章编号：200900360 中图分类号： 文献标志码：

基金项目:国家自然科学基金资助项目(50501015)

作者	单位	E-mail
杨世洲^*	1．四川大学制造科学与工程学院，四川成都 610065；2．西华大学材料科学与工程学院，四川成都 610039	yangshizhou@163.com
李宁	四川大学制造科学与工程学院
文玉华	四川大学制造科学与工程学院

Author Name	Affiliation	E-mail
Yang Shizhou	1. School of Manufacture Sci. and Eng., Sichuan Univ., Chengdu 610065, China 2. School of Material Sci.and Eng.,Xihua Univ., Chengdu 610039, China	yangshizhou@163.com
Li Ning	School of Manufacture Sci. and Eng., Sichuan Univ.
Wen Yuhua	School of Manufacture Sci. and Eng., Sichuan Univ.

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引用文本：
杨世洲,李宁,文玉华.电脉冲处理对固溶态Fe14Mn6Si8Cr5Ni合金形状记忆效应的影响[J].工程科学与技术,2010,42(2):232-236.
Yang Shizhou,Li Ning,Wen Yuhua.Effect of Electropulsing Treatment on the Shape Memory Effect of Fe14Mn6Si8Cr5Ni Solid Solution Alloy[J].Advanced Engineering Sciences,2010,42(2):232-236.