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首页> 外文期刊>Materials Science and Engineering >Microstructures and mechanical properties of as-cast Mg-5Y-3Nd-Zr-xGd (x = 0, 2 and 4 wt.%) alloys
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Microstructures and mechanical properties of as-cast Mg-5Y-3Nd-Zr-xGd (x = 0, 2 and 4 wt.%) alloys

机译:铸造Mg-5Y-3Nd-Zr-xGd(x = 0、2和4 wt。%)合金的显微组织和力学性能

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摘要

Mg-5Y-3Nd-0.6Zr-xGd (x = 0,2 and 4 wt.%) alloys were prepared by metal mould casting technique, the structures and mechanical properties were investigated. The alloys were mainly composed of α-Mg solid solution and β-phase. With increasing Gd content, Mg_5RE phase increased and the grain was refined. The Mg-5Y-3Nd-2Gd-0.6Zr alloy exhibited highest ultimate tensile strength and Mg-5Y-3Nd-0.6Zr alloy showed highest yield strength at room temperature. With increasing amount of Gd, the thermal resistance was improved. The Mg-5Y-3Nd-4Gd-0.6Zr alloy exhibited highest UTS and YS at 250 ℃, they were about 1.27 times higher than those of Gd-free alloy, which was mainly attributed to the increase of the β-phase and Mg_5RE strengthening phase.
机译:通过金属模铸技术制备了Mg-5Y-3Nd-0.6Zr-xGd(x = 0.2和4 wt。%)合金,研究了其结构和力学性能。合金主要由α-Mg固溶体和β相组成。随着Gd含量的增加,Mg_5RE相增加,晶粒细化。 Mg-5Y-3Nd-2Gd-0.6Zr合金在室温下具有最高的极限抗拉强度,而Mg-5Y-3Nd-0.6Zr合金在室温下具有最高的屈服强度。随着Gd含量的增加,热阻提高。 Mg-5Y-3Nd-4Gd-0.6Zr合金在250℃时的UTS和YS最高,比无Gd合金高约1.27倍,这主要归因于β相的增加和Mg_5RE的增强相。

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  • 来源
    《Materials Science and Engineering》 |2010年第8期|1891-1895|共5页
  • 作者单位

    State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street,Changchun 130022, Jilin, China;

    School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China;

    State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street,Changchun 130022, Jilin, China;

    State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street,Changchun 130022, Jilin, China;

    School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China;

    State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street,Changchun 130022, Jilin, China;

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

    Mg-Y-Nd-Zr-Gd alloys; casting; microstructure; mechanical properties;

    机译:Mg-Y-Nd-Zr-Gd合金;铸件;微观结构机械性能;

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