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Effect of nitrogen addition and annealing temperature on superelastic properties of Ti-Nb-Zr-Ta alloys

机译:氮添加量和退火温度对Ti-Nb-Zr-Ta合金超弹性性能的影响

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摘要

The composition dependence of the mechanical properties and martensitic transformation behavior of Ti-Nb-4Zr-2Ta-N alloys is investigated. The effect of annealing temperature on the microstructural evolution and superelastic properties in the N-added and N-free alloys is compared. The addition of N decreases M_s of Ti-Nb-4Zr-2Ta alloys by about 200 K per 1 at.%N and improves the superelastic properties of Ti-Nb-4Zr-2Ta alloys. The dissolution of α phase increases the martensitic transformation start temperature and decreases the superelastic recovery strain for the N-free alloy, whereas it causes opposite effects for the N-added alloy. The different annealing temperature dependences of superelastic properties are discussed on the basis of microstructure observation.
机译:研究了Ti-Nb-4Zr-2Ta-N合金的力学性能和马氏体相变行为的成分依赖性。比较了退火温度对添加N和不含N的合金的组织演变和超弹性性能的影响。氮的添加使Ti-Nb-4Zr-2Ta合金的M_s每1 at。%N降低约200 K,并改善Ti-Nb-4Zr-2Ta合金的超弹性。 α相的溶解会增加马氏体转变开始温度,并降低无N合金的超弹性回复应变,而对添加N的合金产生相反的影响。在微观结构观察的基础上,讨论了不同退火温度对超弹性性能的影响。

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  • 来源
    《Materials Science and Engineering》 |2010年第26期|p.6844-6852|共9页
  • 作者单位

    Institute of Materials Science, University of Tsukuba, Tsukuba, Ibaraki 305-8573, Japan;

    Institute of Materials Science, University of Tsukuba, Tsukuba, Ibaraki 305-8573, Japan;

    Precision and Intelligence Laboratory, Tokyo Institute of Technology, Yokohama 226-8503, Japan;

    School of Materials Science and Engineering & ERI, Gyeongsang National University, 900 Gozwadong, Jinju, Cyeongnam 660-701, Korea;

    Institute of Materials Science, University of Tsukuba, Tsukuba, Ibaraki 305-8573, Japan,School of Materials Science and Engineering & ERI, Gyeongsang National University, 900 Gozwadong, Jinju, Cyeongnam 660-701, Korea;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    shape memory alloys; superelasticity; Ti alloys; nitrogen;

    机译:形状记忆合金;超弹性钛合金氮;

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