Sm对AZ61合金显微组织的影响
Effects of Sm on microstructure of AZ61 alloys
李克杰
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作者单位：台州职业技术学院
中文关键字：钐；镁合金；显微组织
英文关键字：Sm; magnesium alloy; microstructure
中文摘要：采用XRD、OM、SEM和TEM等微观分析方法研究了含0-2.0wt% Sm的AZ61合金显微组织。研究发现，稀土Sm与合金内A1原子结合形成高熔点Al2Sm弥散粒子, Al2Sm相可以作为AZ61合金基体的形核核心，从而细化合金组织。
英文摘要：The effect of Sm (0-2.0 wt. %) addition on the microstructure of AZ61 magnesium alloy were investigated by means of XRD, OM, SEM and TEM. The results show that with the addition of 0.5～2.0wt% Sm, the spotted, high-melting point phase Al2Sm was formed in the alloy. Al2Sm particals can cause the heterogeneous nucleation of a-Mg matrix and refined the microstructure of AZ61 alloy.