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The effect of grain size on the damping capacity of Fe-17 wt%Mn

机译:晶粒尺寸对Fe-17 wt%Mn阻尼性能的影响

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摘要

The grain size dependence of the damping capacity of Fe-17 wt%Mn steel was investigated. A high damping capacity was measured in the ultra-fine grained steel, despite its lower volume fraction of e martensite and lower density of ε variant boundaries and ε/γ phase boundaries. Dilatometry of the ultra-fine grained Fe-17 wt%Mn steel revealed that the ε←→γ phase transformation was largely suppressed. The features of the damping spectra were related to the anti-ferromagnetic transition in the γ phase, the thermo-elastic ε←→γ phase transformation and the motion of grain boundaries in the ultra-fine grained microstructure. The damping spectrum of the ultra-fine grained Fe-17 wt%Mn steel was dominated by grain boundary damping effects.
机译:研究了Fe-17 wt%Mn钢的阻尼能力与晶粒尺寸的关系。尽管超细晶粒钢的马氏体体积分数较低,ε变质边界和ε/γ相边界的密度较低,但仍具有较高的阻尼能力。 Fe-17 wt%Mn超细晶粒钢的膨胀分析表明,ε←→γ相变得到了很大的抑制。阻尼谱的特征与γ相中的反铁磁跃迁,热弹性ε←→γ相变以及超细晶粒组织中晶界的运动有关。 Fe-17wt%Mn超细晶粒钢的阻尼谱受晶界阻尼效应支配。

著录项

  • 来源
    《Materials Science and Engineering》 |2017年第23期|187-194|共8页
  • 作者单位

    Graduate Institute of Ferrous Technology, Pohang University of Science and Technology, Pohang 37673, South Korea,Advanced Manufacturing Process R&D Group, Korea Institute of Industrial Technology, Ulsan 44413, South Korea;

    Graduate Institute of Ferrous Technology, Pohang University of Science and Technology, Pohang 37673, South Korea;

    Technical Research Center, POSCO, Gwangyang, South Korea;

    Technical Research Center, POSCO, Gwangyang, South Korea;

    Graduate Institute of Ferrous Technology, Pohang University of Science and Technology, Pohang 37673, South Korea;

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

    Fe-Mn alloy; Epsilon martensite; Damping; Internal friction; Thermal cycling;

    机译:铁锰合金;Epsilon马氏体;阻尼内部摩擦;热循环;

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