通过室温下拉伸实验研究了Ti-14Nb-4Sn和Ti-16Nb-4Sn(at.%)合金的超弹性.发现锻造态和400℃冰水淬火态的Ti-16Nb-4Sn合金超弹性良好,通过4%变形量循环拉伸三次即可获得完全的超弹性;而400℃冰水淬火态的Ti-14Nb-4Sn合金通过3%变形量循环拉伸两次即可完全回复.Ti-14Nb-4Sn合金和Ti-16Nb-4Sn合金均以700℃冰水淬火态断裂延伸率为最大,分别为14.42%和12.02%.锻造态Ti-14Nb-4Sn合金的马氏体逆相变回复温度As为134.8℃.XRD分析结果表明室温下Ti-16Nb-4Sn合金的组织为β相和+α"马氏体相;而Ti-14Nb-4Sn合金的室温组织除β和α"外,还存在α相.
参考文献
| [1] | 邓辉,戴品强,许伟长,洪春福.Ti-22Nb-6Zr（at%）合金的超弹性和形状记忆效应[J].热加工工艺,2007(08):1-4. |
| [2] | Jae II Kim;Hee Young Kim;Hideki Hosoda .Shape Memory Behavior of Ti-22Nb-(0.5-2.0)O(at percent) Biomedical Alloys[J].Materials transactions,2005(4):852-857. |
| [3] | Y.F. Zheng;B.L. Wang;J.G. Wang .Corrosion behaviour of Ti-Nb-Sn shape memory alloys in different simulated body solutions[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2006(0):891-895. |
| [4] | 杨军,李宁,文玉华,王杉华.热处理对Fe17Mn5Si8Cr5Ni形状记忆合金回复应力的影响[J].热加工工艺,2005(10):53-54,61. |
| [5] | Tomonari Inamura;Yusuke Fukui;Hideki Hosoda;Kenji Wakashima;Shuichi Miyazaki .Mechanical properties of Ti-Nb biomedical shape memory alloys containing Ge or Ga[J].Materials science & engineering, C. Biomimetic and supramolecular systems,2005(3):426-432. |
| [6] | Kim JI;Kim HY;Inamura T;Hosoda H;Miyazaki S .Shape memory characteristics of Ti-22Nb-(2-8)Zr(at.%) biomedical alloys[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2005(1/2):334-339. |
| [7] | Eiji Takahashi;Tasuku Sakurai;Sadao Watanabe .Effect of Heat Treatment and Sn Content on Superelasticity in Biocompatible TiNbSn Alloys[J].Materials transactions,2002(12):2978-2983. |
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