Enhanced strength-ductility synergy via high dislocation density-induced strain hardening in nitrogen interstitial CrMnFeCoNi high-entropy alloy
文献类型：期刊论文
| 作者 | Li, Huabing1; Han, Yu1; Feng, Hao1; Zhou, Gang2; Jiang, Zhouhua1; Cai, Minghui3; Li, Yizhuang4; Huang, Mingxin4 |
| 刊名 | JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2023-04-01 |
| 卷号 | 141页码:184-192 |
| ISSN号 | 1005-0302 |
| 关键词 | High-entropy alloy Interstitials Mechanical properties First-principles calculations Stacking fault energy |
| DOI | 10.1016/j.jmst.2022.09.020 |
| 通讯作者 | Li, Huabing(lihb@smm.neu.edu.cn) ; Zhou, Gang(gzhou@imr.ac.cn) |
| 英文摘要 | The present work demonstrates that nitrogen doping inhibits the formation of deformation twins in a CrMnFeCoNi high entropy alloy, while significantly increases the strength without sacrificing much duc-tility at 77 K. Microstructural characterization and first-principles calculations were employed to unveil the role of interstitial nitrogen atoms in obtaining such an excellent combination of strength and ductility at 77 K. It is found that nitrogen addition increases generalized stacking fault energy (GSFE) and reduces twinning. However, the pinning of dislocations by nitrogen atoms effectively suppresses dislocation cross -slip and dynamic recovery and in turn, promotes the accumulation of dislocations. The high dislocation density induces a high strain hardening capacity and improves uniform elongation, which compensates for the ductility loss accompanied by solid solution strengthening. The effect of nitrogen doping enriches the design concept of high-and medium-entropy alloys, providing an economical and effective strategy to develop ultra-high-performance alloys that are suitable for cryogenic applications.(c) 2022 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology. |
| 资助项目 | National Natural Science Foundation of China[U1960203] ; National Natural Science Foundation of China[52004060] ; National Natural Science Foundation of China[52101025] ; Talent Project of Revitalizing Liaoning[XLYC1902046] ; China National Postdoctoral Program for Innovative Talents[BX20200076] ; Fundamental Research Funds for the Central Universities[N2125017] ; Fundamental Research Funds for the Central Universities[N2002004] ; Key Research and Development Program of LvLiang[219114] ; National Super-computing Center in Zhengzhou ; LvLiang Cloud Computing Center of TianHe-2 of China |
| 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:000892646700002 |
| 资助机构 | National Natural Science Foundation of China ; Talent Project of Revitalizing Liaoning ; China National Postdoctoral Program for Innovative Talents ; Fundamental Research Funds for the Central Universities ; Key Research and Development Program of LvLiang ; National Super-computing Center in Zhengzhou ; LvLiang Cloud Computing Center of TianHe-2 of China |
| 源URL | [http://ir.imr.ac.cn/handle/321006/175970]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Li, Huabing; Zhou, Gang |
| 作者单位 | 1.Northeastern Univ, Sch Met, Shenyang 110819, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shi changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 3.Northeastern Univ, Sch Mat Sci & Engn, Shenyang 110819, Peoples R China 4.Univ Hong Kong, Dept Mech Engn, Pokfulam Rd, Hong Kong 999077, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Huabing,Han, Yu,Feng, Hao,et al. Enhanced strength-ductility synergy via high dislocation density-induced strain hardening in nitrogen interstitial CrMnFeCoNi high-entropy alloy[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2023,141:184-192. |
| APA | Li, Huabing.,Han, Yu.,Feng, Hao.,Zhou, Gang.,Jiang, Zhouhua.,...&Huang, Mingxin.(2023).Enhanced strength-ductility synergy via high dislocation density-induced strain hardening in nitrogen interstitial CrMnFeCoNi high-entropy alloy.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,141,184-192. |
| MLA | Li, Huabing,et al."Enhanced strength-ductility synergy via high dislocation density-induced strain hardening in nitrogen interstitial CrMnFeCoNi high-entropy alloy".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 141(2023):184-192. |
入库方式： OAI收割
来源：金属研究所
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