陈志永

教授 博士生导师 硕士生导师

入职时间:1999-08-01

所在单位:材料科学与工程学院

学历:博士研究生毕业

办公地点:湖南省长沙市岳麓区中南大学校本部化学楼205#

性别:男

联系方式:czysh@netease.com

学位:博士学位

在职信息:在职

毕业院校:中南大学

   
当前位置: 中文主页 >> 论文成果

Strengthening the Mg-Y-Zn alloy through the formation of nanoscale lamellar structures and nanograins

发布时间:2021-10-21

点击次数:

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:

发表时间:2021-07-16

上一条: Effects of trace Ag on precipitation behavior and mechanical properties of extruded Mg-Gd-Y-Zr alloys

下一条: Loading mode dependence of {10-12} twin variant selection in a rolled Mg-Al-Zn alloy