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Research on the Semi-Solid Compressive Deformation Behavior of Ti-7Cu Alloy

机译：Ti-7Cu合金的半固态压缩变形行为研究

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摘要

The semi-solid deformation behavior of Ti-7Cu titanium alloy in the temperature range of 1,223 K to 1,473 K and strain rate range of 0.005 to 5 s~(-1) have been investigated by hot compressive testing. The results show that the maximum and stability stresses decrease with decreasing strain rate and increasing temperature. A yielding occurred to the alloy at a higher strain rate under all experimental temperatures. The flow behaviors were described by a constitutive equation based on the Arrhenius equations and the deformation activate energies is also calculated. By comparing with microstructure of the solid deformation, the liquid in semi-solid deformation can overcome the restriction of the movement of solid particle, which reduced the dislocation pile-up during deformation and caused low deformation resistant stress.
机译：通过热压缩试验研究了Ti-7Cu钛合金在1,223 K至1,473 K的温度范围和0.005至5 s〜（-1）的应变速率范围内的半固态变形行为。结果表明，最大应力和稳定应力随着应变率的降低和温度的升高而减小。在所有实验温度下，合金都以较高的应变速率发生了屈服。通过基于Arrhenius方程的本构方程描述了流动行为，并计算了变形激活能。通过与固相变形的微观结构比较，半固相变形的液体可以克服固相颗粒运动的限制，减少了固溶过程中的位错堆积，引起较低的抗变形应力。

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  • 来源
    《High temperature materials and processes》 |2016年第1期|29-35|共7页
  • 作者

    Yongnan Chen; Chuang Luo; Jiao Wang; Yongqing Zhao; Hong Chen;

  • 作者单位

    School of Materials Science and Engineering, Chang'an University, Xi'an 710064, China;

    School of Materials Science and Engineering, Chang'an University, Xi'an 710064, China;

    School of Materials Science and Engineering, Chang'an University, Xi'an 710064, China;

    Northwest Institute for Nonferrous Metal Research, Xi'an 710016, China;

    School of Materials Science and Engineering, Chang'an University, Xi'an 710064, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Ti-7Cu alloy; semi-solid; compressive deformation; constitutive relationship;

    机译：Ti-7Cu合金;半固体压缩变形本构关系;

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