Effect of micro-alloying La on precipitation behavior, mechanical properties and electrical conductivity of Al-Mg-Si alloys

doi:10.1007/s11431-021-1863-5

IMR OpenIR

	Effect of micro-alloying La on precipitation behavior, mechanical properties and electrical conductivity of Al-Mg-Si alloys
	Zheng QiuJu 1,2; Jiang HongXiang 1,2; He Jie 1,2; Zhang LiLi 1; Zhao JiuZhou 1,2
通讯作者	Jiang HongXiang(hxjiang@imr.ac.cn) ; Zhao JiuZhou(jzzhao@imr.ac.cn)
	2021-08-09
发表期刊	SCIENCE CHINA-TECHNOLOGICAL SCIENCES
ISSN	1674-7321
页码	11
摘要	The rapid industrial development calls for alloys that possess higher comprehensive properties. In this study, the effect of micro-alloying La addition on the precipitation behavior during artificial aging as well as the mechanical properties and electrical conductivity of Al-Mg-Si alloys were investigated by thermal analysis, microstructural characterizations and properties tests. The results demonstrated that micro-alloying La addition does not change the whole precipitation sequence during the artificial aging of Al-Mg-Si alloys as well as the atomic structure of the precipitates. However, the higher La-vacancy binding energy as well as the strong La-Si and La-Mg interactions can decrease the solubility of Si and Mg in the Al matrix and the beta '' precipitation activation energy from 89.9 to 76.7 kJ/mol, leading to the improvement of the strength and electrical conductivity of Al-Mg-Si alloys simultaneously. The microstructural features affecting the strength and electrical conductivity were theoretically discussed in terms of the La addition.
关键词	aluminum alloys micro-alloying La precipitation behavior hardness electrical conductivity
资助者	Science and Technology Project of the Headquarters of State Grid Corporation of China
DOI	10.1007/s11431-021-1863-5
收录类别	SCI
语种	英语
资助项目	Science and Technology Project of the Headquarters of State Grid Corporation of China[5500-201924129A-0-0-00]
WOS研究方向	Engineering ; Materials Science
WOS类目	Engineering, Multidisciplinary ; Materials Science, Multidisciplinary
WOS记录号	WOS:000684079300002
出版者	SCIENCE PRESS
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/321006/159322
专题	中国科学院金属研究所
通讯作者	Jiang HongXiang; Zhao JiuZhou
作者单位	1.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Zheng QiuJu,Jiang HongXiang,He Jie,et al. Effect of micro-alloying La on precipitation behavior, mechanical properties and electrical conductivity of Al-Mg-Si alloys[J]. SCIENCE CHINA-TECHNOLOGICAL SCIENCES,2021:11.
APA	Zheng QiuJu,Jiang HongXiang,He Jie,Zhang LiLi,&Zhao JiuZhou.(2021).Effect of micro-alloying La on precipitation behavior, mechanical properties and electrical conductivity of Al-Mg-Si alloys.SCIENCE CHINA-TECHNOLOGICAL SCIENCES,11.
MLA	Zheng QiuJu,et al."Effect of micro-alloying La on precipitation behavior, mechanical properties and electrical conductivity of Al-Mg-Si alloys".SCIENCE CHINA-TECHNOLOGICAL SCIENCES (2021):11.