Internal friction and heat resistance of Al, Al-Ce, Al-Ce-Zr and Al-Ce-(Sc)-(Y) aluminum alloys with high strength and high electrical conductivity

doi:10.1016/j.jmrt.2021.07.054

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	Internal friction and heat resistance of Al, Al-Ce, Al-Ce-Zr and Al-Ce-(Sc)-(Y) aluminum alloys with high strength and high electrical conductivity
	Wang, Weiyi 2; Pan, Qinglin 1,2; Lin, Geng 1; Yu, Yi 1; Wang, Xiangdong 6; Liu, Yaru 2; Sun, Yuqiao 2; Ye, Ji 1; Huang, Zhiqi 3; Xiang, Shengqian 4
刊名	JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
	2021-09-01
卷号	14 页码:1255-1274
关键词	Al-Ce-Sc-Y alloy Internal frication Damping mechanism Heat resistance Micro structural evolution
ISSN号	2238-7854
DOI	10.1016/j.jmrt.2021.07.054
通讯作者	Liu, Bing(bingliumittal@163.com)
英文摘要	To study the application performances of new aluminum alloy conductors, dynamic mechanical analysis and microstructure observation were used to characterize the heat resistance and internal friction. Severe recrystallization occurred in Al and Al-0.2Ce alloy above 320 degrees C. The hardness and electrical conductivity of Al decreased from 40.3 to 22.2 HV and 61.58 to 60.87 %IACS after temperature scanning from 50 to 500 degrees C, which was mainly attributed to the enhancement of electron scattering by recrystallized grain boundaries. The co-addition of Sc and Y element can obtain the best heat resistance. The diameter of Al3Sc precipitates enriched with Y atoms is lower than 40 nm under high temperature (400-500 degrees C) and the recrystallization behavior can be effectively inhibited by Al3Sc precipitates. The internal friction of Al, Al-0.2Ce and Al-0.2Ce-0.1Y alloys mainly originates from dislocation motion before PR peaks and the growth of recrystallization grains after P-R peaks. The internal friction of Al-0.2Ce-0.2Sc and Al-0.2Ce-0.2Sc-0.1Y alloys increases evenly because of the strong pinning effect of Al3Sc precipitates on dislocations and boundaries. The internal friction is composed of weak dislocation motion and boundaries relaxation. Finally, the internal friction of Al-0.2Ce-0.12Zr alloy under high temperature is complicated and affected by the precipitation behavior of Al3Zr precipitates, dislocations motion, the interaction between Al3Zr precipitates and dislocations, recrystallization processes. (C) 2021 The Author(s). Published by Elsevier B.V.
资助项目	Key-Area Research and Development Program of Guangdong Province[2020B010186002] ; 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	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000702774500011
资助机构	Key-Area Research and Development Program of Guangdong Province ; 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
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/166759]
专题	金属研究所_中国科学院金属研究所
通讯作者	Liu, Bing
作者单位	1.Cent South Univ, Light Alloy Res Inst, Changsha 410083, Peoples R China 2.Cent South Univ, Sch Mat Sci & Engn, Changsha 410083, Peoples R China 3.Guangdong Fenglu Aluminum Co Ltd, Foshan 528133, Peoples R China 4.Guangdong Haomei New Mat Co Ltd, Qingyuan 511542, Peoples R China 5.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 6.CRRC Times Elect Co Ltd, Mfg Ctr, Zhuzhou 412001, Peoples R China 7.Shandong Univ, Sch Basic Med Sci, Jinan 250012, Peoples R China
推荐引用方式 GB/T 7714	Wang, Weiyi,Pan, Qinglin,Lin, Geng,et al. Internal friction and heat resistance of Al, Al-Ce, Al-Ce-Zr and Al-Ce-(Sc)-(Y) aluminum alloys with high strength and high electrical conductivity[J]. JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,2021,14:1255-1274.
APA	Wang, Weiyi.,Pan, Qinglin.,Lin, Geng.,Yu, Yi.,Wang, Xiangdong.,...&Liu, Bing.(2021).Internal friction and heat resistance of Al, Al-Ce, Al-Ce-Zr and Al-Ce-(Sc)-(Y) aluminum alloys with high strength and high electrical conductivity.JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,14,1255-1274.
MLA	Wang, Weiyi,et al."Internal friction and heat resistance of Al, Al-Ce, Al-Ce-Zr and Al-Ce-(Sc)-(Y) aluminum alloys with high strength and high electrical conductivity".JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T 14(2021):1255-1274.