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Effect of uniform distribution of a phase on mechanical, shape memory and pseudoelastic properties of Ti-6Cr-3Sn alloy

机译：相均匀分布对Ti-6Cr-3Sn合金的力学性能，形状记忆和伪弹性的影响

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摘要

Recently, among our developed Ti-Cr-3Sn alloys, the Ti-6Cr-3Sn alloy exhibited good mechanical, shape memory and pseudoelastic properties. However, the shape memory effect was incomplete, the pseudoelastic recovered strain was small and the ultimate tensile strength (UTS) was low. Therefore, in this study, the effect of a step heat treatment at 973 K (SHT973K) in the (α +β) region with the purpose of creating a uniform distribution of the a phase in the β phase matrix using ω phase precursors was investigated. It was determined that the step heat treatment in the 973 K (α +β) region was effective for improving the strength, shape memory and pseudoelastic properties of the Ti-6Cr-3Sn alloy due to the uniform distribution of the α phase in the β phase matrix, which resulted in a more effective increase in the critical stress for slip deformation. It is concluded that the uniform distribution of the a phase in the β matrix is an excellent method for improving the mechanical, shape memory and pseudoelastic properties of ω-sensitive β Ti alloys.
机译：最近，在我们开发的Ti-Cr-3Sn合金中，Ti-6Cr-3Sn合金表现出良好的机械，形状记忆和伪弹性。但是，形状记忆效果不完全，拟弹性回复应变小，极限抗拉强度（UTS）低。因此，在这项研究中，研究了使用ω相前体在（α+β）区域中以973 K（SHT973K）进行分步热处理的效果，目的是在β相矩阵中产生均匀的α相分布。 。可以确定的是，由于β相中α相的均匀分布，在973 K（α+β）区进行的逐步热处理可有效改善Ti-6Cr-3Sn合金的强度，形状记忆和伪弹性。相矩阵，从而更有效地增加了滑移变形的临界应力。结论是，α相在β基体中的均匀分布是改善ω敏感βTi合金的力学性能，形状记忆和伪弹性的极好方法。

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  • 来源
    《Materials Science and Engineering》 |2012年第15期|p.28-35|共8页
  • 作者

    A. Wadood; T. Inamura; Y. Yamabe-Mitarai; H. Hosoda;

  • 作者单位

    Precision and Intelligence Laboratory, Tokyo Institute of Technology, 4259-R2-27 Midori-Ku, Yokohama 226-8503, Japan ,High Temperature Materials Unit, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan;

    Precision and Intelligence Laboratory, Tokyo Institute of Technology, 4259-R2-27 Midori-Ku, Yokohama 226-8503, Japan;

    High Temperature Materials Unit, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan;

    Precision and Intelligence Laboratory, Tokyo Institute of Technology, 4259-R2-27 Midori-Ku, Yokohama 226-8503, Japan;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    titanium alloys; precipitation; phase transformation; mechanical characterization; shape memory;

    机译：钛合金沉淀;相变机械特性形状记忆;

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