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

doi:10.1016/j.jmrt.2022.07.019

IMR OpenIR

	Investigation on microstructure and mechanical properties of hot-rolled AZ31 Mg alloy with various cryogenic treatments
	Che, Bo 1; Lu, Liwei 1; Zhang, Jialong 1; Teng, Jie 2; Chen, Liang 3; Xu, Yong 4; Wang, Tao 5; Huang, Liang 6; Wu, Zhiqiang 1
通讯作者	Lu, Liwei(cqulqyz@126.com) ; Huang, Liang(huangliang@hust.edu.cn) ; Wu, Zhiqiang(wuzq2009@163.com)
	2022-07-01
发表期刊	JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
ISSN	2238-7854
卷号	19 页码:4557-4570
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.
关键词	AZ31 Mg alloy Hot rolling Cryogenic treatment Microstructure Mechanical properties
资助者	National Natural Science Foundation of China ; Hunan Provincial Natural Science Foundation of China
DOI	10.1016/j.jmrt.2022.07.019
收录类别	SCI
语种	英语
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
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000832918000004
出版者	ELSEVIER
引用统计	被引频次：17[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/174663
专题	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.Hunan Univ Sci & Technol, Sch Mat Sci & Engn, Xiangtan 411201, Peoples R China 2.Hunan Univ, Coll Mat Sci & Engn, Changsha 410082, Peoples R China 3.Shandong Univ, Key Lab Liquid Solid Struct Evolut & Proc Mat, Minist Educ, Jinan 250061, Peoples R China 4.Chinese Acad Sci, Inst Met Res, Shi changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 5.Taiyuan Univ Technol, Coll Mech & Vehicle Engn, Taiyuan 030024, Peoples R China 6.Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, 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.