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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, Weiyi1; Pan, Qinglin1,2; Lin, Geng2; Wang, Xiaoping3; Sun, Yuqiao1; Wang, Xiangdong4; Ye, Ji2; Sun, Yuanwei1; Yu, Yi2; Jiang, Fuqing1,5; Li, Jun6; Liu, Yaru1
Corresponding AuthorLiu, Yaru(yaruliucsu@163.com)
2020-12-01
Source PublicationJOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN1005-0302
Volume58Pages:155-170
AbstractIn 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.
KeywordAl-Ce-Sc-Y alloy Electrical conductivity Mechanical properties Second phase Nano-size precipitates
Funding OrganizationKey Research and Development Program of Guangdong Province ; Science and Technology Major Project of Hunan Province
DOI10.1016/j.jmst.2020.03.073
Indexed BySCI
Language英语
Funding ProjectKey Research and Development Program of Guangdong Province[2020B010186002] ; Science and Technology Major Project of Hunan Province[2017GK4002]
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000574648800020
PublisherJOURNAL MATER SCI TECHNOL
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/140720
Collection中国科学院金属研究所
Corresponding AuthorLiu, Yaru
Affiliation1.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
Recommended Citation
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.
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