Dislocations in icosahedral quasicrystalline phase embedded in hot-deformed Mg alloys
Dislocations in icosahedral quasicrystalline phase embedded in hot-deformed Mg alloys
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DOI：
10.1016/j.jallcom.2015.10.284
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发表时间：
2016-02
影响因子：
6.2
通讯作者：
Hua Huang;Yuan Tian;G. Yuan;Chunlin Chen;Zhongchang Wang;W. Ding;A. Inoue
中科院分区：
文献类型：
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作者：
Hua Huang;Yuan Tian;G. Yuan;Chunlin Chen;Zhongchang Wang;W. Ding;A. Inoue
对I相增强Mg-3.5Zn-0.6Gd合金中嵌入Mg基体中的I相颗粒进行了系统的结构研究，并为I相颗粒中位错的存在提供了证据。发现这种位错在Mg基体的（0001）面上形成，这是由于它们滑入I相颗粒的5重面和2重面所致。讨论了变形镁合金的变形条件对I相变形行为的影响，以及I相的变形行为对变形镁合金力学性能的影响。I相和Mg基体之间的结合也被证实是强的。
We perform a systematic structural investigation of the I-phase particles embedded in Mg matrix in I-phase-reinforced Mg–3.5Zn–0.6Gd alloy and offer evidence to the presence of dislocations in the I-phase particles. Such dislocations are found to be formed on the (0001) plane of Mg matrix, which is attributed to their slipping into the 5-fold and 2-fold planes of I-phase particles. We also discuss how deformation conditions of wrought Mg alloys affect the deformation behaviors of the I-phase and how deformation behavior of I-phase affect the mechanical properties of wrought Mg alloys. The bonding between the I-phase and Mg matrix was also confirmed to be strong.