In-situ TEM study of dislocations in Mg–Y alloys

被引：0

作者：

Wu, Jing ^{[1
,2
]}

Lu, Sirong ^{[3
]}

Tian, Jinsen ^{[4
]}

Chiu, YuLung ^{[2
]}

机构：

[1] Cryo-EM Center, Southern University of Science and Technology, Shenzhen,518055, China

[2] School of Metallurgy and Materials, University of Birmingham, Birmingham,B15 2TT, United Kingdom

[3] Shenzhen Institute for Quantum Science and Engineering, Southern University of Science and Technology, Shenzhen,518055, China

[4] College of Mechatronics and Controlling Engineering, Shenzhen University, Shenzhen,518060, China

来源：

Materials Science and Engineering: A | 2024年 / 897卷

关键词：

Magnesium alloys - Yttrium alloys;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

In this work, in-situ TEM compression has been carried out to observe the nucleation and movement of dislocations in Mg–Y alloys. The effect of Y contents (0.4 wt% and 4 wt%) on the dislocation behaviour was studied. It was found that a larger yielding stress was needed to activate the slip in the alloy containing 4 wt% Y. The edge dislocations on the pyramidal II plane in Mg-0.4Y alloy assumed an extended locked configuration with line direction parallel to the basal plane, while non-edge segments remained mobile during the compression. In Mg-4% Y alloy, dislocations assumed an oval shape and were associated with enhanced cross-slip activities without the long edge segments parallel to the basal plane frequently seen in the Mg-0.4Y alloy. © 2024 Elsevier B.V.

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