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Yield strength behavior for rolled magnesium alloy sheets with texture variation

机译：轧制镁合金薄板屈服强度行为的变化

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摘要

A feasible method combining extrusion, rolling and annealing was designed to fabricate magnesium alloy sheets with various texture patterns and grain sizes. Tensile tests at ambient temperature revealed that grain refinement and texture together contributed to the great differences of the presentative Hall-Petch parameters during different rolling stages. With texture variation, competition between slip and twinning during yield behavior leads to two conspicuous Hall-Petch relations. It was found that slip-dominated Hall-Petch relation exhibited a much larger frictional stress of about 142 MPa and a texture dependent slope ranging from 121 to 225 MPa μm~(½). Comparatively, twinning-induced Hall-Petch relation exhibited a much lower frictional stress of about 25 MPa and a higher but unchanged slope of about 300 MPa μm~(½), meaning that the parameters are primarily controlled by the stress to activate twinning.
机译：设计了一种将挤压，轧制和退火相结合的可行方法，以制造具有各种纹理图案和晶粒尺寸的镁合金板。在环境温度下的拉伸试验表明，晶粒细化和织构共同导致了不同轧制阶段的Hall-Petch参数存在巨大差异。随着纹理的变化，屈服行为期间滑移和孪生之间的竞争会导致两个明显的霍尔-帕奇关系。发现以滑移为主的霍尔-Petch关系表现出大得多的摩擦应力，约为142 MPa，并且织构相关的斜率为121-225 MPaμm〜（1/2）。相比之下，孪生引起的霍尔-Petch关系表现出低得多的约25 MPa的摩擦应力和较高但未改变的约300 MPaμm〜（1/2）的斜率，这意味着参数主要受应力控制以激活孪生。

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  • 来源
    《Materials Science and Engineering》 |2013年第15期|77-82|共6页
  • 作者

    W.Z. Chen; X. Wang; M.N. Kyalo; E.D. Wang; Z.Y. Liu;

  • 作者单位

    School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, PR China;

    School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, PR China;

    School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, PR China;

    School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, PR China;

    School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, PR China;

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

    Magnesium alloy; Rolling; Texture; Yield strength;

    机译：镁合金滚动质地;屈服强度;

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