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Strengthening the bimodal-grained powder metallurgy ferritic steels with Cu addition by aging hardening

机译：用老化硬化加强铜的双峰粒粉冶金铁素体钢

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摘要

Oxides dispersion strengthened ferritic steels with bimodal-grains prepared by powder metallurgy (PM) have excellent strength-ductility synergy. However, the strengthening oxides can hardly be introduced into coarse grains by traditional PM methods, which limits the overall strength. In this work, to further enhance the mechanical property of PM ferritic steel, the face centered cubic ε-Cu phase was precipitated in both fine and coarse grains via aging hardening, and its strengthening effects was evaluated.
机译：通过粉末冶金（PM）制备的双峰晶体强化铁素体钢具有优异的强度 - 延展性协同作用。然而，通过传统的PM方法几乎可以通过传统的PM方法将加强氧化物引入粗颗粒中，这限制了总体强度。在这项工作中，为了进一步增强PM铁素体钢的力学性能，通过老化硬化在细细和粗晶粒中沉淀面中心立方ε-Cu相，并评估其强化效果。

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  • 来源
    《Materials Science and Engineering》 |2021年第7期|140312.1-140312.5|共5页
  • 作者

    Liming Tan; Zexin Wang; Yunping Li; Yong Liu; Feng Liu;

  • 作者单位

    School of Metallurgy and Environment Central South University Changsha 410083 PR China;

    Powder Metallurgy Research Institute Central South University Changsha 410083 PR China State Key Laboratory of Powder Metallurgy Central South University Changsha 410083 China;

    Powder Metallurgy Research Institute Central South University Changsha 410083 PR China State Key Laboratory of Powder Metallurgy Central South University Changsha 410083 China;

    Powder Metallurgy Research Institute Central South University Changsha 410083 PR China State Key Laboratory of Powder Metallurgy Central South University Changsha 410083 China;

    Powder Metallurgy Research Institute Central South University Changsha 410083 PR China State Key Laboratory of Powder Metallurgy Central South University Changsha 410083 China;

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  • 正文语种 eng
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  • 关键词

    Ferritic steels; Cu; Mechanical alloying; Biniodal-grains; Aging precipitation;

    机译：铁素体钢;铜;机械合金化;二碘颗粒;老化降水量;

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