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Elastic Limit of Fe-Pd Alloys Exhibiting Lattice Softening

机译：Fe-Pd合金的晶格软化极限

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摘要

The elastic limit (maximum elastic strain) of Fe-Pd alloys exhibiting a second-order-like martensitic transformation from the face centered cubic structure to the face centered tetragonal structure was investigated by varying the test conditions. The elastic limit decreased from 7.3% to 4.6% as temperature was increased from 240 K to 300 K, a phenomenon that can probably be attributed to the strong temperature dependence of the elastic constant C'. The elastic limit also significantly decreased upon changing the compression direction from [001] to [011] because of the large elastic anisotropy. However, the critical resolved shear stress was only slightly influenced by temperature and the compression direction. The elastic limit of a polycrystalline specimen of the alloy was one order in magnitude smaller than that of its corresponding single crystal.
机译：通过改变试验条件，研究了Fe-Pd合金的弹性极限（最大弹性应变），该合金表现出从面心立方结构到面心四方结构的二次马氏体转变。随着温度从240 K增加到300 K，弹性极限从7.3％降低到4.6％，这种现象很可能归因于弹性常数C'对温度的强烈依赖性。当压缩方向从[001]更改为[011]时，由于弹性各向异性较大，弹性极限也会显着降低。但是，临界解析剪切应力仅受温度和压缩方向的轻微影响。合金的多晶试样的弹性极限比其相应的单晶的弹性极限小一个数量级。

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  • 来源
    《ISIJ international》 |2014年第6期|1374-1378|共5页
  • 作者

    Fei XIAO; Takashi FUKUDA; Tomoyuki KAKESHITA;

  • 作者单位

    Department of Material Science and Engineering, Graduate School of Engineering, Osaka University, 2-1, Yamada-oka, Suita, Osaka, 565-0871 Japan,State Key Lab of Metal Matrix Composite, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240 P. R. China;

    Department of Material Science and Engineering, Graduate School of Engineering, Osaka University, 2-1, Yamada-oka, Suita, Osaka, 565-0871 Japan;

    Department of Material Science and Engineering, Graduate School of Engineering, Osaka University, 2-1, Yamada-oka, Suita, Osaka, 565-0871 Japan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    iron-palladium alloy; elastic anisotropy; single crystal; martensitic transformation; mechanical twinning;

    机译：铁钯合金弹性各向异性单晶马氏体转变机械孪生;

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