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
文献类型：期刊论文
| 作者 | Wang, Weiyi1; Pan, Qinglin1,6; Lin, Geng6; Wang, Xiaoping5; Sun, Yuqiao1; Wang, Xiangdong4; Ye, Ji6; Sun, Yuanwei1; Yu, Yi6; Jiang, Fuqing1,3 |
| 刊名 | JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
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| 出版日期 | 2020-12-01 |
| 卷号 | 58页码:155-170 |
| ISSN号 | 1005-0302 |
| 关键词 | Al-Ce-Sc-Y alloy Electrical conductivity Mechanical properties Second phase Nano-size precipitates |
| DOI | 10.1016/j.jmst.2020.03.073 |
| 通讯作者 | Liu, Yaru(yaruliucsu@163.com) |
| 英文摘要 | 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. |
| 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 |
| 语种 | 英语 |
| 出版者 | JOURNAL MATER SCI TECHNOL |
| WOS记录号 | WOS:000574648800020 |
| 资助机构 | Key Research and Development Program of Guangdong Province ; Science and Technology Major Project of Hunan Province |
| 源URL | [http://ir.imr.ac.cn/handle/321006/140718]  |
| 专题 | 金属研究所_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, Xiangya Hosp 2, Changsha 410011, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 4.CRRC Times Elect Co Ltd, Mfg Ctr, Zhuzhou 412001, Peoples R China 5.Hunan Oriental Scandium Ind Co Ltd, Changsha 410100, Peoples R China 6.Cent South Univ, Light Alloy Res Inst, Changsha 410083, 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. |
入库方式： OAI收割
来源：金属研究所
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