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Effect of micro-alloying La on precipitation behavior, mechanical properties and electrical conductivity of Al-Mg-Si alloys
Zheng QiuJu1,2; Jiang HongXiang1,2; He Jie1,2; Zhang LiLi1; Zhao JiuZhou1,2
Corresponding AuthorJiang HongXiang(hxjiang@imr.ac.cn) ; Zhao JiuZhou(jzzhao@imr.ac.cn)
2021-08-09
Source PublicationSCIENCE CHINA-TECHNOLOGICAL SCIENCES
ISSN1674-7321
Pages11
AbstractThe 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.
Keywordaluminum alloys micro-alloying La precipitation behavior hardness electrical conductivity
Funding OrganizationScience and Technology Project of the Headquarters of State Grid Corporation of China
DOI10.1007/s11431-021-1863-5
Indexed BySCI
Language英语
Funding ProjectScience and Technology Project of the Headquarters of State Grid Corporation of China[5500-201924129A-0-0-00]
WOS Research AreaEngineering ; Materials Science
WOS SubjectEngineering, Multidisciplinary ; Materials Science, Multidisciplinary
WOS IDWOS:000684079300002
PublisherSCIENCE PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/159322
Collection中国科学院金属研究所
Corresponding AuthorJiang HongXiang; Zhao JiuZhou
Affiliation1.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
Recommended Citation
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.
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