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Effect of aluminum content on the texture and mechanical behavior of Mg-1 wt% Mn wrought magnesium alloys

机译：铝含量对Mg-1 wt％Mn变形镁合金织构和力学行为的影响

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摘要

The mechanical response of as-extruded magnesium-aluminum-manganese alloy with varying (1 -4 wt%) aluminum content has been examined, while the concentration of manganese is kept constant at 1 wt%. Results indicated that microstructure exhibits more uniform and equiaxed grain structure, and gradual decrease of texture intensity with increasing aluminum content Mechanical testing results revealed tensile and compressive yield strengths decreased, while yield anisotropy, tensile uniform elongation and strain hardening exponent increased with increasing aluminum content. Weaker texture was considered to be responsible for lower yield strength, and in particular for significant decrease in tensile yield strength. In addition, simulation results revealed that prismatic and basal slips played a very important role during tensile deformation, and the contribution of prismatic slip decreased with increase in aluminum content. On the other hand, {1012} twin was the major deformation mode at the initial stage of the compressive deformation in addition to the basal slip, and the relative activity of the {1012} twin decreased with increasing aluminum content.
机译：已经检验了具有变化的（1-4重量％）铝含量的挤压的镁-铝-锰合金的机械响应，同时锰的浓度保持恒定在1重量％。结果表明，随着铝含量的增加，组织呈现出更均匀均匀的等轴晶组织，织构强度逐渐降低。力学性能测试结果表明，拉伸和压缩屈服强度降低，而屈服各向异性，拉伸均匀伸长率和应变硬化指数随铝含量的增加而增加。较弱的织构被认为是较低的屈服强度的原因，尤其是导致拉伸屈服强度的显着降低的原因。另外，模拟结果表明，棱柱形和基层滑动在拉伸变形中起着非常重要的作用，棱柱形滑动的贡献随着铝含量的增加而降低。另一方面，{1012}孪晶是除了基面滑动之外在压缩变形初期的主要变形模式，并且{1012}孪晶的相对活性随着铝含量的增加而降低。

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  • 来源
    《Materials Science and Engineering》 |2015年第15期|320-326|共7页
  • 作者

    M.Z. Bian; A. Tripathi; H. Yu; N.D. Nam; L.M. Yan;

  • 作者单位

    Department of Materials Science and Engineering, Monash University, Clayton Campus, Victoria 3800, Australia;

    Department of Metallurgical Engineering & Materials Science, Indian Institute of Technology Bombay, Mumbai 400076, India;

    School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300132, China;

    Petroleum Department, Petrovietnam University, Ba Ria City, Ba Ria-Vung Tau Province 74000, Viet Nam;

    School of Materials Science and Engineering, Innermongolia University of Technology, Huhhot 010051, China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Magnesium alloys; Extrusion; Dynamic recrystallization; Twinning;

    机译：镁合金;挤压;动态重结晶;结对;

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