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The high temperature deformation behavior and microstructure of TC21 titanium alloy

机译：TC21钛合金的高温变形行为和组织

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摘要

TC21 titanium alloy was hot compressed isothermally at temperatures ranging from 880 ℃ to 950 ℃ and strain rates ranging from 0.01 to 10 s~(-1). Microstructures were investigated by electron backscatter diffraction (EBSD) technique and transmission electron microscopy (TEM), and processing maps were developed at different strains. It is found that strain rate is a key factor for the formation of hot deformation microstructure. The stress-strain curves were exhibited flow softening behavior at high strain rate above 1 s~(-1), while equiaxed grains were found at lower strain rates. There is no large instability zone besides two peak-areas of 880-900℃, 1-10s~(-1) and 925-950℃, 10~(-0.5) to 10s~(-1).
机译：TC21钛合金在880℃至950℃的温度下等温热变形，应变速率在0.01到10 s〜（-1）之间。通过电子背散射衍射（EBSD）技术和透射电子显微镜（TEM）研究了微观结构，并绘制了不同应变下的加工图。发现应变速率是形成热变形微观结构的关键因素。应力-应变曲线在高于1 s〜（-1）的高应变速率下表现出流动软化行为，而在较低应变速率下发现等轴晶。除了两个峰值区域分别为880-900℃，1-10s〜（-1）和925-950℃，10〜（-0.5）至10s〜（-1）之外，没有较大的失稳区域。

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  • 来源
    《Materials Science and Engineering》 |2010年第22期|P.5360-5367|共8页
  • 作者

    Yanlei Zhao; Bolong Li; Zhishou Zhu; Zuoren Nie;

  • 作者单位

    College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China;

    College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China;

    Beijing Institute of Aeronautical Materials, Beijing 100095, China;

    College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China;

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

    TC21 alloy; hot deformation; processing map; microstructure;

    机译：TC21合金;热变形加工图;微观结构;

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