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

CORC > 金属研究所 > 中国科学院金属研究所

	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
刊名	SCIENCE CHINA-TECHNOLOGICAL SCIENCES
	2021-08-09
页码	11
关键词	aluminum alloys micro-alloying La precipitation behavior hardness electrical conductivity
ISSN号	1674-7321
DOI	10.1007/s11431-021-1863-5
通讯作者	Jiang HongXiang(hxjiang@imr.ac.cn) ; Zhao JiuZhou(jzzhao@imr.ac.cn)
英文摘要	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.
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
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000684079300002
资助机构	Science and Technology Project of the Headquarters of State Grid Corporation of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/159321]
专题	金属研究所_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.