Strengthening the Mg-Y-Zn alloy through the formation of nanoscale lamellar structures and nanograins
发布时间：2021-10-21
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DOI码：10.1016/j.jallcom.2021.161148
发表刊物：Journal of Alloys and Compounds
关键字：Mg-Y-Zn alloy; Cold rotary swaging; Stacking faults; NanoscaleStrengthening effect
摘要：Extruded Mg-3.16Y-1.87Zn (wt%) alloy bars containing coarse block-shaped phases and fine needle-shaped phases were prepared via cold rotary swaging in this study. The microstructure evolution during deformation was investigated using scanning and transmission electron microscopy. The results show that little change was observed in the block-shaped phases in the swaged samples, while significant curving and kinking was observed in the needle-shaped phases. After swaging, nanoscale lamellar structures containing basal stacking faults and adjacent alpha-Mg nanoslices were formed in the area with needle-shaped phases, showing randomly distributed orientation between adjacent alpha-Mg nanoslices. Nanograins were formed in the area without any phases. The formation of nanoscale lamellar structures and nanograins contributed to the remarkable strengthening of the swaged alloy bars. Moreover, the extruded samples with a smaller spacing of the stacking faults and a higher fraction of the needle-shaped area show a higher strengthening effect after swaging. (c) 2021 Elsevier B.V. All rights reserved.
合写作者：C.M. Liu，M. Fang，S.N. Jiang，Z.Y. Chen，Y.C. Wan*
第一作者：X. Chen
论文类型：期刊论文
文献类型：J
卷号：886
页面范围：161148
ISSN号：0925-8388
是否译文：否
发表时间：2021-07-16