Microstructure evolution and performances of Al-0.7Mg-0.6Si-0.2Ce-X (X=Sc, Y and Zr) alloys with high strength and high electrical conductivity

doi:10.1016/j.jallcom.2021.162654

IMR OpenIR

	Microstructure evolution and performances of Al-0.7Mg-0.6Si-0.2Ce-X (X=Sc, Y and Zr) alloys with high strength and high electrical conductivity
	Wang, Weiyi 1; Pan, Qinglin 1,2; Jiang, Fuqing 3; Yu, Yi 2; Lin, Geng 2; Wang, Xiangdong 6; Ye, Ji 2; Pan, Decong 2; Huang, Zhiqi 4; Xiang, Shengqian 5; Li, Jun 7; Liu, Bing 1
通讯作者	Wang, Weiyi(wangweiyi19940402@163.com)
	2022-02-25
发表期刊	JOURNAL OF ALLOYS AND COMPOUNDS
ISSN	0925-8388
卷号	895 页码:18
摘要	In order to achieve the compatibility between excellent mechanical properties and good electrical con-ductivity of Al-Mg-Si alloys, detailed investigation was carried out to understand the microstructure evo-lution and their influences on performances of different Al-0.7Mg-0.6Si-0.2Ce-X (X=Sc, Y and Zr) alloys prepared by casting, homogenization, hot extrusion, solution and aging treatments. Under aging state, Ce can form a large number of micron-sized AlCeSi and a few AlCeFeSi phase. The strength increased to 334 MPa as a result of decreased grain size and improved precipitation effect and the electrical conductivity increased up to 53.53% IACS because of lower solute Si atoms. The beta '' precipitates were coarsened and consequently the volume fracture was largely reduced due to the presence of Sc element, leading to the decreased strength of 311 MPa. The more solute Mg, Si and Sc atoms increased the degree of free electron scattering and the electrical conductivity decreased to 51.86%IACS. It is also found that Sc significantly enhanced the elongation of the alloy from 11.8% to 18.0%, which might be attributed to the formation of Al3Sc and (Al, Si)3Sc phases. The addition of Y raised the electrical conductivity of Al-Mg-Si-Ce alloy to 55.79%IACS by ameliorating the volume fraction and distribution of beta '' precipitates and decreasing the solute Si atoms. The co-addition of Sc and Y inherited the advantages of such two alloys. The ultimate tensile strength, elongation, electrical conductivity of Al-0.7Mg-0.6Si-0.2Ce-0.2Sc-0.1Y alloy processed by aging treatments is 336 MPa, 19.4% and 53.11%IACS, respectively. (C) 2021 Elsevier B.V. All rights reserved.
关键词	Al-Mg-Si-RE alloy Electrical conductivity Mechanical properties Second phase Strengthening mechanism Electrical resistance mechanism
资助者	Key-Area Research and Development Program of Guangdong Province ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities of Central South University ; Open Sharing Fund for the Large-scale Instruments and Equipments of Central South University
DOI	10.1016/j.jallcom.2021.162654
收录类别	SCI
语种	英语
资助项目	Key-Area Research and Development Program of Guangdong Province[2020B010186002] ; National Natural Science Foundation of China[51978080] ; Fundamental Research Funds for the Central Universities of Central South University[2020zzts076] ; Open Sharing Fund for the Large-scale Instruments and Equipments of Central South University
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000720136400002
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：18[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/321006/167387
专题	中国科学院金属研究所
通讯作者	Wang, Weiyi
作者单位	1.Cent South Univ, Sch Mat Sci & Engn, Changsha 410083, Peoples R China 2.Cent South Univ, Light Alloy Res Inst, Changsha 410083, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 4.Guangdong Fenglu Aluminum Co Ltd, Foshan 528133, Peoples R China 5.Guangdong Haomei New Mat Co Ltd, Qingyuan 511542, Peoples R China 6.CRRC Times Elect Co Ltd, Mfg Ctr, Zhuzhou 412001, Peoples R China 7.Shandong Univ, Cheeloo Coll Med, Sch Basic Med Sci, Jinan 250012, Peoples R China
推荐引用方式 GB/T 7714	Wang, Weiyi,Pan, Qinglin,Jiang, Fuqing,et al. Microstructure evolution and performances of Al-0.7Mg-0.6Si-0.2Ce-X (X=Sc, Y and Zr) alloys with high strength and high electrical conductivity[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2022,895:18.
APA	Wang, Weiyi.,Pan, Qinglin.,Jiang, Fuqing.,Yu, Yi.,Lin, Geng.,...&Liu, Bing.(2022).Microstructure evolution and performances of Al-0.7Mg-0.6Si-0.2Ce-X (X=Sc, Y and Zr) alloys with high strength and high electrical conductivity.JOURNAL OF ALLOYS AND COMPOUNDS,895,18.
MLA	Wang, Weiyi,et al."Microstructure evolution and performances of Al-0.7Mg-0.6Si-0.2Ce-X (X=Sc, Y and Zr) alloys with high strength and high electrical conductivity".JOURNAL OF ALLOYS AND COMPOUNDS 895(2022):18.