Microstructure and properties of novel Al-Ce-Sc, Al-Ce-Y, Al-Ce-Zr and Al-Ce-Sc-Y alloy conductors processed by die casting, hot C extrusion and cold drawing

doi:10.1016/j.jmst.2020.03.073

IMR OpenIR

	Microstructure and properties of novel Al-Ce-Sc, Al-Ce-Y, Al-Ce-Zr and Al-Ce-Sc-Y alloy conductors processed by die casting, hot C extrusion and cold drawing
	Wang, Weiyi 1; Pan, Qinglin 1,2; Lin, Geng 2; Wang, Xiaoping 3; Sun, Yuqiao 1; Wang, Xiangdong 4; Ye, Ji 2; Sun, Yuanwei 1; Yu, Yi 2; Jiang, Fuqing 1,5; Li, Jun 6; Liu, Yaru 1
通讯作者	Liu, Yaru(yaruliucsu@163.com)
	2020-12-01
发表期刊	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN	1005-0302
卷号	58 页码:155-170
摘要	In order to overcome the trade-off between the strength and electrical conductivity of aluminum alloy conductors, the new Al-Ce-Sc, Al-Ce-Y, Al-Ce-Zr and Al-Ce-Sc-Y alloys were prepared by die casting, high temperature homogenization treatment, hot extrusion and cold drawing. Adding Sc and Y eliminated the dendrite segregation of the as-cast Al-0.2Ce alloy and promoted the formation of equiaxed grains with the average grain size of 142.5 pin. The Al-0.2Ce-0.2Sc-0.1Y alloy inherited the great tensile properties of Al-0.2Ce-0.25c alloy and the high electrical conductivity of Al-0.2Ce-0.1Y alloy simultaneously. After cold drawing and annealing at 200 degrees C for 5 h, the ultimate tensile strength of Al-0.2Ce-0.2Sc-0.1Y alloy reached 200 MPa and 198 MPa, the elongation reached 6.8 % and 8.5 %, and the electrical conductivity reached 61.01 % and 61.77 %, respectively. The main second phase of Al-0.2Ce-0.25c-0.1Y alloy after hot extrusion were Al13Fe3Ce containing a few Y and Si atoms. The larger size and proportion of the second phase greatly reduced the concentration of solute Fe and Si atoms and the addition of Y significantly decreased the density of defects after cold drawing compared to Al-0.2Ce-0.2Sc alloy, which improved electrical conductivity of the alloy. Furthermore, the dispersed and coherent nano-size Al3Sc precipitions of Al-0.2Ce-0.25c-0.1Y alloy greatly improved strength, elongation and heat resistance. Compared with Al-0.2Ce-0.25c alloy, the lower density of dislocation, stacking fault and subgrain boundary and the larger size of Al3Sc precipitions with enrichment of Y atoms enable the Al-0.2Ce-0.25c-0.1Y alloy to maintain high strength, elongation and electrical conductivity after annealing. (C) 2020 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
关键词	Al-Ce-Sc-Y alloy Electrical conductivity Mechanical properties Second phase Nano-size precipitates
资助者	Key Research and Development Program of Guangdong Province ; Science and Technology Major Project of Hunan Province
DOI	10.1016/j.jmst.2020.03.073
收录类别	SCI
语种	英语
资助项目	Key Research and Development Program of Guangdong Province[2020B010186002] ; Science and Technology Major Project of Hunan Province[2017GK4002]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000574648800020
出版者	JOURNAL MATER SCI TECHNOL
引用统计	被引频次：54[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/321006/140720
专题	中国科学院金属研究所
通讯作者	Liu, Yaru
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.Hunan Oriental Scandium Ind Co Ltd, Changsha 410100, Peoples R China 4.CRRC Times Elect Co Ltd, Mfg Ctr, Zhuzhou 412001, Peoples R China 5.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 6.Cent South Univ, Xiangya Hosp 2, Changsha 410011, Peoples R China
推荐引用方式 GB/T 7714	Wang, Weiyi,Pan, Qinglin,Lin, Geng,et al. Microstructure and properties of novel Al-Ce-Sc, Al-Ce-Y, Al-Ce-Zr and Al-Ce-Sc-Y alloy conductors processed by die casting, hot C extrusion and cold drawing[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2020,58:155-170.
APA	Wang, Weiyi.,Pan, Qinglin.,Lin, Geng.,Wang, Xiaoping.,Sun, Yuqiao.,...&Liu, Yaru.(2020).Microstructure and properties of novel Al-Ce-Sc, Al-Ce-Y, Al-Ce-Zr and Al-Ce-Sc-Y alloy conductors processed by die casting, hot C extrusion and cold drawing.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,58,155-170.
MLA	Wang, Weiyi,et al."Microstructure and properties of novel Al-Ce-Sc, Al-Ce-Y, Al-Ce-Zr and Al-Ce-Sc-Y alloy conductors processed by die casting, hot C extrusion and cold drawing".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 58(2020):155-170.