【摘 要】
：
研究了不同钙含量对铸态下医用Mg-6%Zn-x%Ca镁合金的显微组织和力学性能的影响。结果表明,随着钙含量的增加,合金的晶粒尺寸明显变小,显微硬度明显提高;能谱分析发现,钙主要
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研究了不同钙含量对铸态下医用Mg-6%Zn-x%Ca镁合金的显微组织和力学性能的影响。结果表明,随着钙含量的增加,合金的晶粒尺寸明显变小,显微硬度明显提高;能谱分析发现,钙主要分布在晶界处,也有少量钙溶解于α-Mg固熔体中。热模拟实验表明,成分为Mg-6%Zn-3%Ca的镁合金抗压强度和屈服强度最高。
The effects of different calcium contents on the microstructure and mechanical properties of as-cast Mg-6% Zn-x% Ca magnesium alloy were studied. The results show that with the increase of calcium content, the grain size of the alloy becomes smaller and the microhardness obviously increases. The energy spectrum analysis shows that the calcium is mainly distributed in the grain boundary and a small amount of calcium is dissolved in the α-Mg solid solution . The results of thermal simulation show that the compressive strength and yield strength of magnesium alloy with Mg-6% Zn-3% Ca are the highest.
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