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Effect of the fiber orientation on the deformation mechanisms of magnesium-alloy based composite

机译：纤维取向对镁合金基复合材料变形机制的影响

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摘要

The influence of the orientation of the fiber reinforcement on the deformation mechanisms of Mg-Al-Ca alloy-based composite has been investigated in-situ using acoustic emission and neutron diffraction methods. Results indicate that the twinned volume is the smallest, when the fibers plane is perpendicular to the loading direction. Residual thermal stresses having a tensile character are present in the as-received composites, which gradually vanishing during compressive straining. The load transfer from the matrix to fiber has been found more effective for specimens with fiber planes aligned with the loading direction, which is in agreement with the theoretical shear-lag model.
机译：利用声发射和中子衍射方法就地研究了纤维增强材料的取向对Mg-Al-Ca合金基复合材料变形机制的影响。结果表明，当纤维平面垂直于加载方向时，孪生体积最小。在原样的复合物中存在具有拉伸特性的残余热应力，该残余热应力在压缩应变期间逐渐消失。已经发现，从基体到纤维的载荷传递对于纤维平面与载荷方向对齐的试样更有效，这与理论剪力滞后模型相符。

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  • 来源
    《Materials Science and Engineering》 |2015年第3期|25-31|共7页
  • 作者

    Gergely Farkas; Zuzanka Trojanova; Zoltan Szaraz; Peter Minarik; Kristian Mathis;

  • 作者单位

    Department of Physics of Materials, Faculty of Mathematics and Physics, Charles University in Prague, Ke Karlovu 5, 121 16 Prague, Czech Republic;

    Department of Physics of Materials, Faculty of Mathematics and Physics, Charles University in Prague, Ke Karlovu 5, 121 16 Prague, Czech Republic;

    Institute for Energy and Transport, Joint Research Centre, Westerduinweg 3, NL-1755ZG Petten, The Netherlands;

    Department of Physics of Materials, Faculty of Mathematics and Physics, Charles University in Prague, Ke Karlovu 5, 121 16 Prague, Czech Republic;

    Department of Physics of Materials, Faculty of Mathematics and Physics, Charles University in Prague, Ke Karlovu 5, 121 16 Prague, Czech Republic;

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  • 正文语种 eng
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  • 关键词

    Magnesium composite; Neutron diffraction; Acoustic emission; Deformation mechanisms;

    机译：镁复合材料中子衍射;声发射;变形机制;

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