Transition of twinning behavior in CoCrFeMnNi high entropy alloy with grain refinement
文献类型：期刊论文
| 作者 | Sun, SJ; Tian, YZ; Lin, HR; Yang, HJ; Dong, XG; Wang, YH; Zhang, ZF; Zhang, ZF (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China. |
| 刊名 | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
 |
| 出版日期 | 2018-01-18 |
| 卷号 | 712页码:603-607 |
| 关键词 | Stacking-fault Energy Induced Plasticity Steels Deformation Mechanisms Tensile Properties Size Ductility Strength Microstructure Stress Metals |
| ISSN号 | 0921-5093 |
| 英文摘要 | Fully recrystallized CoCrFeMnNi high entropy alloys (HEAs) with different grain sizes ranging from 503 nm to 88.9 mu m were fabricated by cold rolling and controlled annealing. Tensile tests were conducted at ambient temperature, and deformation microstructures were investigated using electron channeling contrast imaging (ECCI) and transmission electron microscopy (TEM) techniques. It is found that strain-hardening curves changed dramatically with grain refinement. Deformation twinning prevails when the grain size is coarse, but it is absent when the grain size falls in the ultrafine-grained (UFG) regime. The transition of twinning behavior is supposed to be determined by the increased twinning stress with grain refinement. It is indicated that the twinning behavior of the HEAs is strongly dependent on the competition between the flow stress and critical twinning stress with grain refinement.; Fully recrystallized CoCrFeMnNi high entropy alloys (HEAs) with different grain sizes ranging from 503 nm to 88.9 mu m were fabricated by cold rolling and controlled annealing. Tensile tests were conducted at ambient temperature, and deformation microstructures were investigated using electron channeling contrast imaging (ECCI) and transmission electron microscopy (TEM) techniques. It is found that strain-hardening curves changed dramatically with grain refinement. Deformation twinning prevails when the grain size is coarse, but it is absent when the grain size falls in the ultrafine-grained (UFG) regime. The transition of twinning behavior is supposed to be determined by the increased twinning stress with grain refinement. It is indicated that the twinning behavior of the HEAs is strongly dependent on the competition between the flow stress and critical twinning stress with grain refinement. |
| 学科主题 | Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| 资助机构 | National Natural Science Foundation of China (NSFC) [51331007, 51501196, 51501198] |
| 公开日期 | 2018-06-05 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/79577]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Tian, YZ; Zhang, ZF (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Sun, SJ,Tian, YZ,Lin, HR,et al. Transition of twinning behavior in CoCrFeMnNi high entropy alloy with grain refinement[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2018,712:603-607. |
| APA | Sun, SJ.,Tian, YZ.,Lin, HR.,Yang, HJ.,Dong, XG.,...&Zhang, ZF .(2018).Transition of twinning behavior in CoCrFeMnNi high entropy alloy with grain refinement.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,712,603-607. |
| MLA | Sun, SJ,et al."Transition of twinning behavior in CoCrFeMnNi high entropy alloy with grain refinement".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 712(2018):603-607. |
入库方式： OAI收割
来源：金属研究所
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