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首页> 外文期刊>Journal of Materials Engineering and Performance >Effect of Minor Yttrium on Microstructure and Mechanical Properties of Bioimplant Mg-5Zn Alloy
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Effect of Minor Yttrium on Microstructure and Mechanical Properties of Bioimplant Mg-5Zn Alloy

机译：次钇对生物铝铂镁 - 5ZN合金微观结构和力学性能的影响

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摘要

This paper explores cast Mg-5Zn alloy, containing small amounts of yttrium (Y: 0.1-1.5 wt.%), through microstructure evaluation and tensile and hardness tests. The results reveal that addition of Y to the alloy refines microstructure, especially when secondary phases, Mg3Zn6Y (I) and Mg3Zn3Y2 (W), form. I-phase is detected when 0.3 wt.% Y is added to the alloy, while W-phase is only observed in Mg-5Zn-1.5Y alloy. The results also show that the addition of Y improves yield and tensile strength as well as the hardness value of the Mg-5Zn alloy at the expense of its formability. The three effects of the solid solution of Y in alpha-Mg, grain refinement, and the formation of I- and W-phases are the reasons for such behavior. The improvement is more pronounced when W-phase appears in the microstructure. In other words, Mg-5Zn-1.5Y alloy behaves stronger and harder than other alloys and may be considered as a potential candidate for bioimplant applications if its degradation behavior meets the requirements.
机译：本文探讨了铸造Mg-5Zn合金，含有少量钇（Y：0.1-1.5重量％），通过微观结构评价和拉伸和硬度测试。结果表明，添加y对合金细化微观结构，特别是当二次相，Mg3zN6Y（I）和Mg3zN3Y2（W），形式。当0.3重量％Y加入合金时检测I相，而W相仅在Mg-5Zn-1.5Y合金中观察到W相。结果还表明，添加Y的添加提高了产率和拉伸强度，并且以牺牲其成形性为代价而提高了Mg-5Zn合金的硬度值。 Yα-Mg，晶粒细化和I-和W阶段的形成的三种效应是这种行为的原因。当W相出现在微观结构中时，改善更明显。换句话说，MG-5ZN-1.5Y合金的表现得比其他合金更强，更难以，如果其退化行为符合要求，则可以被认为是生物铝合金应用的潜在候选者。

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