Partition of Er among the constituent phases and the yield phenomenon in a semi-continuously cast Mg–Zn–Zr alloy
Partition of Er among the constituent phases and the yield phenomenon in a semi-continuously cast Mg–Zn–Zr alloy
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DOI：
10.1016/j.scriptamat.2010.04.015
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发表时间：
2010-08
影响因子：
6
通讯作者：
Jing Zhang;X. Y. Zhang;Wei-Gang Li;F. Pan;Zhengxiao Guo
中科院分区：
文献类型：
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作者：
Jing Zhang;X. Y. Zhang;Wei-Gang Li;F. Pan;Zhengxiao Guo
本文描述了在半连续铸造的Mg-1.5Zn-0.6Zr合金中，稀土元素Er在Mg基体中的分配增加，导致在挤压的含Er合金中的延伸率显著增加，以及晶粒尺寸细化和屈服强度更高。此外，还观察到具有明显的上屈服点和下屈服点的屈服现象，这是由于Er的加入引起的溶质原子与位错之间的强相互作用引起的。
This paper describes an increased partition of a rare earth element Er to the Mg matrix in a semi-continuously cast Mg–1.5Zn–0.6Zr alloy, resulting in a significant increase in elongation, as well as a refined grain size and a higher yield strength in the extruded Er-containing alloys compared with the Er-free alloy. Yield phenomena with distinct upper and lower yield points were also observed, caused by the strong interaction between solute atoms and dislocations as a result of Er addition.