Effect of La addition on semi-solid microstructure evolution of Mg-7Zn magnesium alloy

doi:10.1007/s41230-022-1191-2

	Effect of La addition on semi-solid microstructure evolution of Mg-7Zn magnesium alloy
	Zhang, Zhan-yu; Huang, Xiao-feng; Yang, Fan; Zhang, Sheng; Fu, Jiao-li
刊名	CHINA FOUNDRY
	2022-07-01
关键词	magnesium alloy La element semi-solid microstructure evolution coarsening rate constant TG146 22 A
ISSN号	1672-6421
DOI	10.1007/s41230-022-1191-2
英文摘要	Semi-solid billets of Mg-7Zn and Mg-7Zn-0.3La alloys were prepared by semi-solid isothermal heat treatment. The effects of the La element on the as-cast and semi-solid microstructures of Mg-7Zn alloy were investigated. Meanwhile, the effects of isothermal temperature and holding time on the evolution of the semi-solid microstructure of Mg-7Zn-0.3La alloy were also studied. Results indicate that the addition of a small amount of La can significantly refine the as-cast and semi-solid microstructure. During the semi-solid thermal transformation, the size and shape factor of solid particles decrease at first and then increase with the increase of isothermal temperature and holding time. The semi-solid microstructure of Mg-7Zn-0.3La alloy obtained by holding at 605 degrees C for 30 min is the optimal. The average size of solid particles, shape factor, and solid fraction are 42 urn, 1.45 and 61.8%, respectively. At the same time, a comparative study on the coarsening process of particles in the semi-solid billets of Mg-7Zn and Mg-7Zn-0.3La alloys reveals that the addition of La effectively decreases the coarsening rate of solid particles and restricts the growth of solid particles.
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
出版者	SPRINGER SINGAPORE PTE LTD
WOS记录号	WOS:000823246400001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/159438]
专题	材料科学与工程学院理学院
作者单位	Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Zhan-yu,Huang, Xiao-feng,Yang, Fan,et al. Effect of La addition on semi-solid microstructure evolution of Mg-7Zn magnesium alloy[J]. CHINA FOUNDRY,2022.
APA	Zhang, Zhan-yu,Huang, Xiao-feng,Yang, Fan,Zhang, Sheng,&Fu, Jiao-li.(2022).Effect of La addition on semi-solid microstructure evolution of Mg-7Zn magnesium alloy.CHINA FOUNDRY.
MLA	Zhang, Zhan-yu,et al."Effect of La addition on semi-solid microstructure evolution of Mg-7Zn magnesium alloy".CHINA FOUNDRY (2022).