| The interaction and migration of deformation twin in an eutectic high-entropy alloy AlCoCrFeNi2.1 | |
| Zhang, Yaoli1,2; Li, Jinguo1,3; Wang, Xinguang1; Lu, Yiping4; Zhou, Yizhou1; Sun, Xiaofeng1 | |
| Corresponding Author | Li, Jinguo(jgli@imr.ac.cn) ; Wang, Xinguang(xgwang11b@imr.ac.cn) |
| 2019-05-01 | |
| Source Publication | JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
 |
| ISSN | 1005-0302 |
| Volume | 35Issue:5Pages:902-906 |
| Abstract | An eutectic high-entropy alloy consisting Al, Co, Cr, Fe and Ni elements was prepared by vacuum directional solidification technology. The alloy exhibits excellent comprehensive mechanical performance during tension at temperature range of 600-700 degrees C. The microstructure reveals the intersection of twin-twin is the prevailing deformation mechanism and the twins play a dual role in strengthening and toughening the alloy in the thermomechanical process. The deformation twin variants I and Pi were formed by the edge dislocation 11 (2) over bar and the mixed dislocation 21 (1) over bar on the {111} crystal planes, respectively. Besides, the dislocation jogs and kinks caused by twin intersection on the slip planes can strengthen the alloy, which may contribute to the high strength (the tensile strengths at the 600 degrees and 700 degrees tensile tests are respectively780 MPa and 630 MPa.). Moreover, the coherent twin boundary migration has the function of coordinating deformation and contributes to the high ductility of the alloy. (C) 2019 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology. |
| Keyword | Eutectic high-entropy alloy Tensile properties Deformation twin Dislocation jog Twin migration |
| Funding Organization | National Natural Science Foundation of China ; High Technology Research and Development Program of China ; National Key R&D Program of China |
| DOI | 10.1016/j.jmst.2018.09.067 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[51601192] ; National Natural Science Foundation of China[51671188] ; High Technology Research and Development Program of China[2014AA041701] ; National Key R&D Program of China[2018YFB1106600] |
| WOS Research Area | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000460640200024 |
| Publisher | JOURNAL MATER SCI TECHNOL |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/132164 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Li, Jinguo; Wang, Xinguang |
| Affiliation | 1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China 3.Chinese Acad Sci, Lab Space Mfg Technol, Beijing 100094, Peoples R China 4.Dalian Univ Technol, Sch Mat Sci & Engn, Dalian 116024, Peoples R China |
| Recommended Citation GB/T 7714 | Zhang, Yaoli,Li, Jinguo,Wang, Xinguang,et al. The interaction and migration of deformation twin in an eutectic high-entropy alloy AlCoCrFeNi2.1[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2019,35(5):902-906. |
| APA | Zhang, Yaoli,Li, Jinguo,Wang, Xinguang,Lu, Yiping,Zhou, Yizhou,&Sun, Xiaofeng.(2019).The interaction and migration of deformation twin in an eutectic high-entropy alloy AlCoCrFeNi2.1.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,35(5),902-906. |
| MLA | Zhang, Yaoli,et al."The interaction and migration of deformation twin in an eutectic high-entropy alloy AlCoCrFeNi2.1".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 35.5(2019):902-906. |
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