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Ductility improvement by twinning and twin-slip interaction in a Mg-Y alloy

机译:通过Mg-Y合金中的孪生和双滑相互作用提高延展性

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摘要

An extruded Mg-3.0Y alloy with non-basal texture of (4223) component was fabricated by common extrusion and exhibited a high elongation of ~33%. The deformation modes and microstructure evolution of the extruded Mg-3.0Y alloy during the tensile test at room temperature were investigated to explore the reasons for the high ductility by transmission electron microscopy (TEM) and electron backscattered diffraction (EBSD). The results suggested that texture changed from <4223> to <1010> component during the tensile deformation, which is attributed the slip and twinning activity. Basal slip and extension twinning are the dominant deformation modes for the high ductility. Meanwhile, the activation of non-basal slip, contraction twinning and twin-slip interaction also contributes to the good ductility of Mg-3.0Y alloy.
机译:通过普通挤压加工制造了具有非基体组织(4223)成分的Mg-3.0Y挤压合金,其伸长率高达〜33%。通过透射电子显微镜(TEM)和电子背散射衍射(EBSD)研究了挤压Mg-3.0Y合金在室温拉伸试验过程中的变形模式和微观组织演变,以探讨延展性高的原因。结果表明,在拉伸变形过程中,织构从<4223>变为<1010>组分,这归因于滑动和孪生活性。基底滑移和伸展孪生是高延性的主要变形模式。同时,非基底滑移的激活,收缩孪生和双滑移相互作用也有助于Mg-3.0Y合金的良好延展性。

著录项

  • 来源
    《Materials & design》 |2014年第4期|966-974|共9页
  • 作者单位

    National Engineering Research Center of Light Alloy Net Forming, Shanghai Jiao Tong University, Shanghai 200240, China;

    National Engineering Research Center of Light Alloy Net Forming, Shanghai Jiao Tong University, Shanghai 200240, China;

    National Engineering Research Center of Light Alloy Net Forming, Shanghai Jiao Tong University, Shanghai 200240, China;

    National Engineering Research Center of Light Alloy Net Forming, Shanghai Jiao Tong University, Shanghai 200240, China;

    School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;

    National Engineering Research Center of Light Alloy Net Forming, Shanghai Jiao Tong University, Shanghai 200240, China ,Key State Laboratory of Metal Matrix Composite, Shanghai Jiao Tong University, Shanghai 200240, China;

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

    Magnesium; Ductility; Texture; Twinning; Slip;

    机译:镁;延展性质地;孪生;滑;

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