| 冷变形TiNi合金的显微组织及超弹性 |
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| 引用本文： | 黄兵民,刘礼华.冷变形TiNi合金的显微组织及超弹性[J].宇航材料工艺,1997,27(6):51-54. |
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| 作者姓名： | 黄兵民 刘礼华 |
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| 作者单位： | [1]哈尔滨工业大学材料科学与工程学院 [2]江苏钢绳集团 |
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| 摘 要： | 利用透射电镜观察不同温度下的拉伸试验，研究了冷变形量２２％的Ｔｉ－４９．８％Ｎｉ（原子分数）合金的显微组织及线性超弹性行为。透射电镜观察发现，Ｔｉ－４９．８％Ｎｉ（原子分数）合金经较大冷变形量变形后，其显微组织为细小片状且高度形变的马氏体。研究表明，冷变形Ｔｉ－４９．８％Ｎｉ（原子分数）合金经一定次数应力－应变循环处理后可获得完全的线性超弹性，出现线性超弹性的温度区间与冷变形ＴｉＮｉ合金的Ａｓ点有
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| 关 键 词： | 超弹性 应力－应变循环 钛镍合金 显微组织 |
The Microstructure and Superelasticity of Cold Worked TiNi Alloy |
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| Huang Bingmin, Zheng Yufeng, Cai Wei, Zhao Liancheng.The Microstructure and Superelasticity of Cold Worked TiNi Alloy[J].Aerospace Materials & Technology,1997,27(6):51-54. |
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| Authors: | Huang Bingmin Zheng Yufeng Cai Wei Zhao Liancheng |
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| Institution: | Huang Bingmin; Zheng Yufeng; Cai Wei; Zhao Liancheng (College of Materials Science and Engineering Harbin Institute of Technology Harbin 150001)Liu Lihua; Yi Shengning(Jiangsu Wire Bloc. Copor. Jiangyin 214433) |
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| Abstract: | The microstructure and linear superelasticity of 22% cold worked Ti-49. 8at% Ni alloy has been studied by tensile test at various temperature and TEM observation. After large scale cool work, the main microstructure is fine and highly deformed matensile. It is shawn that the complete superelasticity can be obtained by stress-strain cycles.The temperature range of exhibiting the linear superelasticity is related to the As. Furthermore, afte the cold workedwires obtain the complete superelasticity, stress-strain cycles has no influence on the chaseteristics of superelasticity. |
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| Keywords: | Superelasticity Linearsuperelasticity Stress-strain cycles |
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