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首页> 外文期刊>Materials Science and Engineering >The grain size and orientation dependence of geometrically necessary dislocations in polycrystalline aluminum during monotonic deformation: Relationship to mechanical behavior
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The grain size and orientation dependence of geometrically necessary dislocations in polycrystalline aluminum during monotonic deformation: Relationship to mechanical behavior

机译：单晶变形过程中多晶铝中几何必要位错的晶粒尺寸和取向依赖性：与机械行为的关系

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摘要

The evolution of geometrically necessary dislocations (GND) in aluminum was studied using high-resolution EBSD. Small grains had higher GND density than coarse grains and were most pronounced at a strain of ～9.8%, due to GNDs were more homogeneously organized at strain ＞9.8%. Furthermore, <111> oriented grains with higher Taylor factor stored more GNDs than <100> grains.
机译：使用高分辨率EBSD研究了铝中几何必要位错（GND）的演变。小晶粒比粗晶粒具有更高的GND密度，并且最显着的是〜9.8％的应变，这是因为GNDs在> 9.8％的应变下组织更均匀。此外，具有更高泰勒系数的<111>取向晶粒比<100>晶粒存储更多的GND。

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  • 来源
    《Materials Science and Engineering》 |2020年第21期|138939.1-138939.6|共6页
  • 作者

    Shiqi Zhang; Wei Liu; Jifang Wan; R.D.K. Misra; Qiang Wang; Chao Wang;

  • 作者单位

    Key Laboratory of Advanced Materials (MOE) School of Materials Science and Engineering Tsinghua University Beijing 100084 China;

    CNPC Engineering Technology R&D Company Limited Beijing 102206 China Research Institute of Petroleum Exploration and Development Beijing 100083 China;

    Department of Metallurgical Materials and Biomedkal Engineering University of Texas at El Paso El Paso TX 79968 USA;

    Research Institute of Petroleum Exploration and Development Beijing 100083 China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Aluminum; Dislocation density; Deformation; EBSD;

    机译：铝;位错密度;形变;欧洲可持续发展委员会;

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