Regulating the grain refinement and rolling properties of coarse-crystalline Mg-Zn-Gd-Ca-Mn alloy through multi-pass cold rolling and annealing

doi:10.1016/j.msea.2024.146940

IMR OpenIR

	Regulating the grain refinement and rolling properties of coarse-crystalline Mg-Zn-Gd-Ca-Mn alloy through multi-pass cold rolling and annealing
	Li, Jiaqi 1; Li, Xihai 2; Xu, Tianyi 1; Yan, Hong 1; Mao, Yaozong 3; Chen, Rongshi 2
通讯作者	Yan, Hong(yanhong5871@163.com) ; Chen, Rongshi(rschen@imr.ac.cn)
	2024-09-01
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	911 页码:9
摘要	The newly developed Mg-Zn-RE (rare earth) alloy sheet shows significant prospects for 3C applications due to its superior room-temperature malleability compared to the commercial AZ31 alloy. However, the casting ingots of these alloys often exhibit coarse grains due to low alloying element content and the absence of the grain-refining element Zr, making them susceptible to significant cracking while hot-rolling. This study applies a multi-pass cold rolling technique with minimal reduction to a cast Mg-Zn-Gd-system alloy characterized by coarse grains, followed by a static annealing process to enhance its rolling capability. The impact of cold rolling and annealing temperatures on microstructure, plastic deformation mechanism, and static recrystallization (SRX) behavior were studied. It was found that multi-pass cold rolling with minimal decrease promoted the generation of more twins and slip lines, resulting in more uniform deformation and a substantial accumulated rolling strain of 10 %. Consequently, the significant accumulated strain, coupled with stress concentration at positions such as grain boundaries, twin boundaries, and dislocation tangles, acted as nucleation sites for complete static recrystallization at a specific annealing temperature of 375 degrees C. As a result, the coarse cast grains were successfully refined from 400 mu m to 37 mu m. Fortunately, this improvement has significantly enhanced the hot-rolling qualities, removing fractures throughout the process. This advancement not only enables industrial-scale rolling but also enhances production efficiency.
关键词	Mg -Zn -Gd -Ca -Mn alloy Plastic deformation Twins Grain refinement Static recrystallization
资助者	National Natural Science Foundation of China ; Natural Science Foundation of Shandong Province ; Bintech-IMR R D Program
DOI	10.1016/j.msea.2024.146940
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[52271107] ; Natural Science Foundation of Shandong Province[ZR2021ME241] ; Bintech-IMR R D Program[GYY-JSBU-2022-012]
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001273595300001
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：5[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/321006/188291
专题	中国科学院金属研究所
通讯作者	Yan, Hong; Chen, Rongshi
作者单位	1.Shandong Univ Sci & Technol, Sch Mat Sci & Engn, Qingdao 266590, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shi changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 3.Binzhou Inst Technol, Shandong Key Lab Adv Aluminium Mat & Technol, Binzhou 256606, Shandong, Peoples R China
推荐引用方式 GB/T 7714	Li, Jiaqi,Li, Xihai,Xu, Tianyi,et al. Regulating the grain refinement and rolling properties of coarse-crystalline Mg-Zn-Gd-Ca-Mn alloy through multi-pass cold rolling and annealing[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2024,911:9.
APA	Li, Jiaqi,Li, Xihai,Xu, Tianyi,Yan, Hong,Mao, Yaozong,&Chen, Rongshi.(2024).Regulating the grain refinement and rolling properties of coarse-crystalline Mg-Zn-Gd-Ca-Mn alloy through multi-pass cold rolling and annealing.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,911,9.
MLA	Li, Jiaqi,et al."Regulating the grain refinement and rolling properties of coarse-crystalline Mg-Zn-Gd-Ca-Mn alloy through multi-pass cold rolling and annealing".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 911(2024):9.