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Characterization of local deformation behavior of Fe-Ni lenticular martensite by nanoindentation

机译:纳米压痕表征Fe-Ni双凸透镜马氏体的局部变形行为

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摘要

A Fe-33 mass% Ni alloy with transformed lenticular martensite consisting of various lattice defects was investigated by the nanoindentation technique. The highly dislocated regions such as the untwinned region and the austenite phase near the M/A interface showed a relatively easy plasticity initiation and lower flow stress than that of the midrib region containing fine transformation twins. The different responses of plastic deformation in the ultra-fine twins and the dislocated regions provided an insight into the local deformation response in various substructures during the nanoscale mechanical measurements.
机译:通过纳米压痕技术研究了Fe-33质量%Ni合金,该合金具有由各种晶格缺陷组成的相变双凸马氏体。 M / A界面附近的高度错位区域(如未缠绕区域和奥氏体相)与包含精细相变孪晶的中肋区域相比,具有相对容易的可塑性萌生和较低的流动应力。超细孪晶和位错区域中塑性变形的不同响应提供了对纳米尺度机械测量过程中各种亚结构中局部变形响应的了解。

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  • 来源
    《Materials Science and Engineering》 |2010年第8期|1869-1874|共6页
  • 作者单位

    National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan;

    National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan;

    Precision and Intelligence Laboratory, Tokyo Institute of Technology, 4529-R2-18 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan;

    National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan Graduate School of Pure and Applied Sciences, University of Tsukuba, Ibaraki 305-0047, Japan;

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

    nanoindentation; steel; lenticular martensite; twin; dislocation;

    机译:纳米压痕钢;柱状马氏体双胞胎;错位;

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