| 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, Weiyi1; Pan, Qinglin1,2; Lin, Geng2; Yu, Yi2; Wang, Xiangdong6; Liu, Yaru1; Sun, Yuqiao1; Ye, Ji2; Huang, Zhiqi3; Xiang, Shengqian4; Jiang, Fuqing5; Li, Jun7; Liu, Bing1 | |
| Corresponding Author | Liu, Bing(bingliumittal@163.com) |
| 2021-09-01 | |
| Source Publication | JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
 |
| ISSN | 2238-7854 |
| Volume | 14Pages:1255-1274 |
| Abstract | 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. |
| Keyword | Al-Ce-Sc-Y alloy Internal frication Damping mechanism Heat resistance Micro structural evolution |
| Funding Organization | 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 |
| DOI | 10.1016/j.jmrt.2021.07.054 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 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 Research Area | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000702774500011 |
| Publisher | ELSEVIER |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/166760 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Liu, Bing |
| Affiliation | 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.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 |
| Recommended Citation 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. |
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