Deformation mechanism during high-temperature tensile test in an eutectic high-entropy alloy AlCoCrFeNi2.1
文献类型：期刊论文
| 作者 | Zhang, YL; Wang, XG; Li, JG; Huang, YQ; Lu, YP; Sun, XF |
| 刊名 | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
 |
| 出版日期 | 2018-05-02 |
| 卷号 | 724页码:148-155 |
| 关键词 | Eutectic high-entropy alloy Ultra high ductility Miedema model calculation Precipitate phase Dynamic recrystallization |
| ISSN号 | 0921-5093 |
| DOI | 10.1016/j.msea.2018.03.078 |
| 英文摘要 | The deformation mechanism of an eutectic high-entropy alloy (EHEA) AlCoCrFeNi2.1 elevated temperature has been studied by tensile test, microstructure analysis and calculation. The ratio of the FCC and BCC phases has changed greatly after deformation. The formation enthalpies of L-12-type Ni3Al and B2-type NiAl are calculated by using Miedema model. Testing and calculation suggest that B2(II)precipitates (NiAl) have a priority in the precipitation order, which is critical to phase change. Besides, TEM results reveal that the function of B2(II) precipitates in FCC matrix during deformation is similar to Orowan by-passing mechanism, and the role of L1(2,II) precipitates in B2 matrix is regarded as dislocation cutting. Dynamic recrystallization, occurring in the FCC matrix, reduces stress concentration caused by dislocation motion, but it may be suppressed by B2(pi) precipitates. It has been identified that the softening mechanism of dynamic recrystallization and precipitation strengthening have an effect on the high temperature deformation process of the AlCoCrFeNi2.1 EHEA. |
| 学科主题 | Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000432640000018 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/80191]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 作者单位 | 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.Dalian Univ Technol, Sch Mat Sci & Engn, Dalian 116024, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, YL,Wang, XG,Li, JG,et al. Deformation mechanism during high-temperature tensile test in an eutectic high-entropy alloy AlCoCrFeNi2.1[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2018,724:148-155. |
| APA | Zhang, YL,Wang, XG,Li, JG,Huang, YQ,Lu, YP,&Sun, XF.(2018).Deformation mechanism during high-temperature tensile test in an eutectic high-entropy alloy AlCoCrFeNi2.1.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,724,148-155. |
| MLA | Zhang, YL,et al."Deformation mechanism during high-temperature tensile test in an eutectic high-entropy alloy AlCoCrFeNi2.1".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 724(2018):148-155. |
入库方式： OAI收割
来源：金属研究所
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