Gradient cell-structured high-entropy alloy with exceptional strength and ductility
文献类型：期刊论文
| 作者 | Pan, Qingsong6; Zhang, Liangxue5,6; Feng, Rui4; Lu, Qiuhong6; An, Ke4; Chuang, Andrew Chihpin3; Poplawsky, Jonathan D.2; Liaw, Peter K.1; Lu, Lei6 |
| 刊名 | SCIENCE
 |
| 出版日期 | 2021-11-19 |
| 卷号 | 374期号:6570页码:984-+ |
| ISSN号 | 0036-8075 |
| DOI | 10.1126/science.abj8114 |
| 通讯作者 | Lu, Lei(llu@imr.ac.cn) |
| 英文摘要 | Similar to conventional materials, most multicomponent high-entropy alloys (HEAs) lose ductility as they gain strength. In this study, we controllably introduced gradient nanoscaled dislocation cell structures in a stable single-phase HEA with face-centered cubic structure, thus resulting in enhanced strength without apparent loss of ductility. Upon application of strain, the sample-level structural gradient induces progressive formation of a high density of tiny stacking faults (SFs) and twins, nucleating from abundant low-angle dislocation cells. Furthermore, the SF-induced plasticity and the resultant refined structures, coupled with intensively accumulated dislocations, contribute to plasticity, increased strength, and work hardening. These findings offer a promising paradigm for tailoring properties with gradient dislocation cells at the nanoscale and advance our fundamental understanding of the intrinsic deformation behavior of HEAs. |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:000720789200034 |
| 出版者 | AMER ASSOC ADVANCEMENT SCIENCE |
| 源URL | [http://ir.imr.ac.cn/handle/321006/167530]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Lu, Lei |
| 作者单位 | 1.Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA 2.Oak Ridge Natl Lab, Ctr Nanophases Mat Sci, Oak Ridge, TN 37831 USA 3.Argonne Natl Lab, Adv Photon Source, Lemont, IL 60439 USA 4.Oak Ridge Natl Lab, Neutron Scattering Div, Oak Ridge, TN 37831 USA 5.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 6.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 | Pan, Qingsong,Zhang, Liangxue,Feng, Rui,et al. Gradient cell-structured high-entropy alloy with exceptional strength and ductility[J]. SCIENCE,2021,374(6570):984-+. |
| APA | Pan, Qingsong.,Zhang, Liangxue.,Feng, Rui.,Lu, Qiuhong.,An, Ke.,...&Lu, Lei.(2021).Gradient cell-structured high-entropy alloy with exceptional strength and ductility.SCIENCE,374(6570),984-+. |
| MLA | Pan, Qingsong,et al."Gradient cell-structured high-entropy alloy with exceptional strength and ductility".SCIENCE 374.6570(2021):984-+. |
入库方式： OAI收割
来源：金属研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。