Investigation on microstructure and mechanical properties of hot-rolled AZ31 Mg alloy with various cryogenic treatments

doi:10.1016/j.jmrt.2022.07.019

CORC > 金属研究所 > 中国科学院金属研究所

	Investigation on microstructure and mechanical properties of hot-rolled AZ31 Mg alloy with various cryogenic treatments
	Che, Bo 6; Lu, Liwei 6; Zhang, Jialong 6; Teng, Jie 5; Chen, Liang 4; Xu, Yong 3; Wang, Tao 2; Huang, Liang 1; Wu, Zhiqiang 6
刊名	JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
	2022-07-01
卷号	19 页码:4557-4570
关键词	AZ31 Mg alloy Hot rolling Cryogenic treatment Microstructure Mechanical properties
ISSN号	2238-7854
DOI	10.1016/j.jmrt.2022.07.019
通讯作者	Lu, Liwei(cqulqyz@126.com) ; Huang, Liang(huangliang@hust.edu.cn) ; Wu, Zhiqiang(wuzq2009@163.com)
英文摘要	AZ31 Mg alloy sheet, prepared by a novel process combining hot rolling and various cryogenic treatments, has been investigated on its microstructure and mechanical properties. The results show that twins and the Al8Mn5 phase were introduced in the sample with rapid cooling and rapid heating and slow heating and slow cooling, which can significantly impede the movement of dislocations, while twins also can effectively coordinate deformation. Compared to the conventional hot rolling sample, the average grain size and texture strength of the cryogenic treatment samples were refined and increased by similar to 24% and similar to 50%, respectively. The dislocation density of the coarse-grained region in the sample with slow heating and slow cooling is low, and the prismatic and pyramid slips were activated, which can improve the ductility of the alloy. In comparison to conventional hot rolling, the ultimate tensile strength and elongation of AZ31 Mg alloy after rapid cooling and rapid heating were increased by similar to 15% and similar to 37%, respectively, while the elongation after slow heating and slow cooling increased by similar to 71%. The improvement of the mechanical properties of Mg alloy with cryogenic treatment is attributed to the synergistic effect of the refined grain, twins, residual dislocations, precipitates, texture and non-basal slip. (C) 2022 The Authors. Published by Elsevier B.V.
资助项目	National Natural Science Foundation of China[52174362] ; National Natural Science Foundation of China[51975207] ; National Natural Science Foundation of China[51704112] ; Hunan Provincial Natural Science Foundation of China[2021JJ30257] ; Hunan Provincial Natural Science Foundation of China[2020JJ5181]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000832918000004
资助机构	National Natural Science Foundation of China ; Hunan Provincial Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/174662]
专题	金属研究所_中国科学院金属研究所
通讯作者	Lu, Liwei; Huang, Liang; Wu, Zhiqiang
作者单位	1.Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Peoples R China 2.Taiyuan Univ Technol, Coll Mech & Vehicle Engn, Taiyuan 030024, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shi changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 4.Shandong Univ, Key Lab Liquid Solid Struct Evolut & Proc Mat, Minist Educ, Jinan 250061, Peoples R China 5.Hunan Univ, Coll Mat Sci & Engn, Changsha 410082, Peoples R China 6.Hunan Univ Sci & Technol, Sch Mat Sci & Engn, Xiangtan 411201, Peoples R China
推荐引用方式 GB/T 7714	Che, Bo,Lu, Liwei,Zhang, Jialong,et al. Investigation on microstructure and mechanical properties of hot-rolled AZ31 Mg alloy with various cryogenic treatments[J]. JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,2022,19:4557-4570.
APA	Che, Bo.,Lu, Liwei.,Zhang, Jialong.,Teng, Jie.,Chen, Liang.,...&Wu, Zhiqiang.(2022).Investigation on microstructure and mechanical properties of hot-rolled AZ31 Mg alloy with various cryogenic treatments.JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,19,4557-4570.
MLA	Che, Bo,et al."Investigation on microstructure and mechanical properties of hot-rolled AZ31 Mg alloy with various cryogenic treatments".JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T 19(2022):4557-4570.