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首页> 外文期刊>Materials Science and Engineering >Effect of Mg addition on Fe phase morphology, distribution and aging kinetics of Cu-6.5Fe alloy
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Effect of Mg addition on Fe phase morphology, distribution and aging kinetics of Cu-6.5Fe alloy

机译：Mg添加对Cu-6.5Fe合金的Fe相形态，分布和老化动力学的影响

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摘要

The microstructure and properties of the Cu-6.5Fe-xMg (x = 0, 0.1,0.3, 0.5 wt%) alloy were investigated by TEM (transmission electron microscopy), EBSD (electron backscattered diffraction) and tensile testing machines to explore the effect of Mg addition on Fe phase morphology, aging kinetics and properties of Cu-6.5Fe alloy. The properties testing discovered that the addition of Mg significantly improved the tensile strength of Cu-6.5Fe alloy but slightly reduced its conductivity. The tensile strength and conductivity of Cu-6.5Fe-0.3 Mg alloy were 704 MPa and 60.2 %IACS, respectively, after aging 300°C for 1 h. Compared with Cu-6.5Fe alloy, the tensile strength of Cu-6.5Fe-0.3 Mg alloy increased by approximately 236 MPa, and the conductivity decreased by only 1.9 % IACS. The microstructure observation showed that the addition of Mg significantly refined the Fe phase and inhibited its dendrite segregation. After large strain plastic deformation, the granular Fe phases transformed into Fe fibers and the Fe fibers distributed denser with the addition of Mg. Furthermore, the addition of Mg promoted the precipitation of the Fe phase and effectively inhibited the recrystallization of the Cu matrix during the aging. The recrystallization of Fe phase and coarsening of the precipitated Fe phase were also inhibited. The evolution mechanism of Fe phase during casting, plastic deformation and aging in Cu-6.5Fe-0.3 Mg alloy is proposed.
机译：通过TEM（透射电子显微镜），EBSD（电子背散射衍射）和拉伸试验机来研究Cu-6.5Fe-XMG（X = 0，0.1,0.3,0.5wt％）合金的微观结构和性质，以探索效果Cu-6.5Fe合金二相形态，老化动力学和性能的Mg添加。性质测试发现，添加MG的添加显着改善了Cu-6.5Fe合金的拉伸强度，但略微降低了其电导率。 Cu-6.5Fe-0.3mg合金的拉伸强度和电导率分别为704MPa和60.2％IACS，在300℃下1小时后分别为1小时。与Cu-6.5Fe合金相比，Cu-6.5Fe-0.3mg合金的拉伸强度增加了约236MPa，电导率下降仅为1.9％IACS。微观结构观察结果表明，添加Mg显着精制Fe相并抑制其树突偏析。经过大菌株塑性变形后，将粒状的Fe相转化为Fe纤维和Fe纤维分布密集，加入Mg。此外，添加Mg促进Fe相的沉淀，并有效地抑制在老化过程中Cu基质的重结晶。还抑制了Fe相的重结晶和沉淀的Fe相的粗化。提出了Cu-6.5Fe-0.3mg合金铸造，塑性变形和老化期间Fe相的进化机制。

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  • 来源
    《Materials Science and Engineering》 |2021年第22期|141064.1-141064.13|共13页
  • 作者

    Dawei Yuan; Hao Zeng; Xiangpeng Xiao; Hang Wang; Baojun Han; Baixiong Liu; Bin Yang;

  • 作者单位

    Faculty of Materials Metallurgy and Chemistry JiangXi University of Science and Technology Ganzhou 341000 China;

    Faculty of Materials Metallurgy and Chemistry JiangXi University of Science and Technology Ganzhou 341000 China;

    Faculty of Materials Metallurgy and Chemistry JiangXi University of Science and Technology Ganzhou 341000 China JiangXi Advanced Copper Industry Research Institute Yingtan 335000 China;

    Faculty of Materials Metallurgy and Chemistry JiangXi University of Science and Technology Ganzhou 341000 China;

    School of Chemistry and Chemical Engineering Gannon Normal University Ganzhou 341000 China;

    Faculty of Materials Metallurgy and Chemistry JiangXi University of Science and Technology Ganzhou 341000 China JiangXi Advanced Copper Industry Research Institute Yingtan 335000 China;

    Faculty of Materials Metallurgy and Chemistry JiangXi University of Science and Technology Ganzhou 341000 China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Fe phase; Aging kinetics; Cu-Fe-Mg alloy; Microstructure; Precipitation behavior;

    机译：Fe阶段;老化动力学;Cu-Fe-mg合金;微观结构;降水行为;

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