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首页> 外文期刊>Journal of Materials Research >Microstructure and mechanical properties of dual two-phase Ni_3Al-Ni_3V intermetallic alloys charged with carbon
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Microstructure and mechanical properties of dual two-phase Ni_3Al-Ni_3V intermetallic alloys charged with carbon

机译：含碳双相Ni_3Al-Ni_3V双金属间合金的显微组织和力学性能

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摘要

The microstructures and mechanical properties of ternary (Ni_(75)Al_9V_(16)) and multicomponent (Ni_(69)Al_9V_(9.5)Nb_3Ti_(1.5)Co_4Cr_4) dual two-phase intermetallic alloys charged with C were investigated by scanning electron microscope, electron probe microscopic analyzer, x-ray diffraction, Vickers hardness, and tensile tests. Solid solubility limits of C in the dual two-phase microstructures were small, mostly less than 0.1 at.%. When C was charged exceeding the solid solubility limit, large-sized carbides were solidified with no structural coherency with the dual two-phase microstructure. Major transition metals constituting the carbides changed from Nb and Ti to V with increasing charged C content. This transition was correlated with the capability of the carbide formation. C dissolving in the dual two-phase microstructure enhanced hardness and flow strength through solid solution hardening without sacrificing tensile ductility. The formed carbides little contributed to strengthening, rather, contributed to softening through depleting constituent element V as well as alloying metals Nb, Ti, and Cr from the dual two-phase microstructures.
机译：通过扫描电子显微镜研究了三元（Ni_（75）Al_9V_（16））和多组分（Ni_（69）Al_9V_（9.5）Nb_3Ti_（1.5）Co_4Cr_4）双二相金属间合金的组织和力学性能，电子探针显微分析仪，X射线衍射，维氏硬度和拉伸试验。 C在双相两相微结构中的固溶度极限很小，大多数小于0.1 at。％。当C的电荷超过固溶度极限时，大尺寸的碳化物被固化而没有与双两相微结构的结构一致性。随着带电C含量的增加，构成碳化物的主要过渡金属从Nb和Ti变为V。该转变与碳化物形成的能力相关。 C溶解在双相两相微结构中，通过固溶硬化而提高了硬度和流动强度，而没有牺牲拉伸延展性。所形成的碳化物几乎没有促进强化，而是通过消耗了组成元素V以及使双二相微结构中的金属Nb，Ti和Cr合金化而有助于软化。

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  • 来源
    《Journal of Materials Research》 |2016年第12期|1711-1722|共12页
  • 作者

    Yuki Hamada; Naotaka Kuroyanagi; Yasuyuki Kaneno; Takayuki Takasugi;

  • 作者单位

    Department of Materials Science, Osaka Prefecture University, Sakai, Osaka, 599-8531, Japan;

    Department of Materials Science, Osaka Prefecture University, Sakai, Osaka, 599-8531, Japan;

    Department of Materials Science, Osaka Prefecture University, Sakai, Osaka, 599-8531, Japan;

    Department of Materials Science, Osaka Prefecture University, Sakai, Osaka, 599-8531, 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);
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  • 正文语种 eng
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