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首页> 外文期刊>Journal of Materials Engineering and Performance >Effects of Minor Zr and Sr on As-Cast Microstructure and Mechanical Properties of Mg-4Y-1.2Mn-1Zn (wt.%) Magnesium Alloy
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Effects of Minor Zr and Sr on As-Cast Microstructure and Mechanical Properties of Mg-4Y-1.2Mn-1Zn (wt.%) Magnesium Alloy

机译：微量Zr和Sr对Mg-4Y-1.2Mn-1Zn（wt。％）镁合金铸态组织和力学性能的影响

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摘要

The effects of minor Zr and Sr on the as-cast microstructure and mechanical properties of the Mg-4Y-1.2Mn-1Zn (wt.%) alloy were investigated using optical and electron microscopies, differential scanning calorimetry (DSC) analysis, and tensile and creep tests. The microstructural results indicate that small additions of Zr and/or Sr to the Mg-4Y-1.2Mn-1Zn alloy do not cause an obvious change in the morphology and distribution of the Mg12YZn phase in the alloy. The tensile and creep tests indicate that, although small additions of Zr and/or Sr to the Mg-4Y-1.2Mn-1Zn alloy do not have obvious effects on the creep properties of the alloy, the tensile properties at room temperature and 300 °C for the alloys added with Zr and/or Sr are improved. Among the Zr- and/or Sr-containing alloys, the alloy specifically added with of 0.5 wt.% Zr + 0.1 wt.% Sr obtains the optimum tensile properties, and is followed by the alloys added with 0.5 wt.% Zr and 0.1 wt.% Sr.
机译：使用光学和电子显微镜，差示扫描量热法（DSC）分析和拉伸研究了微量Zr和Sr对Mg-4Y-1.2Mn-1Zn（wt。％）合金铸态组织和力学性能的影响。和蠕变测试。显微组织结果表明，向Mg-4Y-1.2Mn-1Zn合金中少量添加Zr和/或Sr不会引起Mg 12 YZn相的形态和分布发生明显变化。合金。拉伸和蠕变测试表明，尽管向Mg-4Y-1.2Mn-1Zn合金中少量添加Zr和/或Sr不会对合金的蠕变性能产生明显影响，但室温和300°C时的拉伸性能添加了Zr和/或Sr的合金的C得以改善。在含Zr和/或Sr的合金中，专门添加0.5 wt。％Zr + 0.1 wt。％Sr的合金可获得最佳拉伸性能，然后添加0.5 wt。％Zr和0.1的合金重量％Sr.

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