Dislocation exhaustion and ultra-hardening of nanograined metals by phase transformation at grain boundaries
文献类型：期刊论文
| 作者 | Wu, Shangshu2; Kou, Zongde2; Lai, Qingquan2,5; Lan, Si2; Katnagallu, Shyam Swaroop3; Hahn, Horst2,3; Taheriniya, Shabnam4; Wilde, Gerhard2,4; Gleiter, Herbert1,2,4; Feng, Tao2 |
| 刊名 | NATURE COMMUNICATIONS
 |
| 出版日期 | 2022-09-17 |
| 卷号 | 13期号:1页码:8 |
| DOI | 10.1038/s41467-022-33257-1 |
| 通讯作者 | Lai, Qingquan(qingquanlai@hotmail.com) ; Feng, Tao(tao.feng@njust.edu.cn) |
| 英文摘要 | The development of high-strength metals has driven the endeavor of pushing the limit of grain size (d) reduction according to the Hall-Petch law. But the continuous grain refinement is particularly challenging, raising also the problem of inverse Hall-Petch effect. Here, we show that the nanograined metals (NMs) with d of tens of nanometers could be strengthened to the level comparable to or even beyond that of the extremely-fine NMs (d similar to 5 nm) attributing to the dislocation exhaustion. We design the Fe-Ni NM with intergranular Ni enrichment. The results show triggering of structural transformation at grain boundaries (GBs) at low temperature, which consumes lattice dislocations significantly. Therefore, the plasticity in the dislocation-exhausted NMs is suggested to be dominated by the activation of GB dislocation sources, leading to the ultra-hardening effect. This approach demonstrates a new pathway to explore NMs with desired properties by tailoring phase transformations via GB physico-chemical engineering. |
| 资助项目 | National Natural Science Foundation of China[55001166] ; National Natural Science Foundation of China[51520105001] ; National Natural Science Foundation of China[51571119] ; National Natural Science Foundation of China[51871120] ; Fundamental Research Funds for the Central Universities[30919011404] ; Qing Lan project of Jiangsu province ; Natural Science Foundation of Jiangsu Province[BK20210352] ; Natural Science Foundation of Jiangsu Province[BK20200019] ; National Key R&D Program of China[2021YFB3802800] ; DOE Office of Science[DE-AC02-06CH11357] ; US DOE Office of Science, Office of Basic Energy Sciences ; Distinguished professor project of Jiangsu province |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:000854873600005 |
| 出版者 | NATURE PORTFOLIO |
| 资助机构 | National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Qing Lan project of Jiangsu province ; Natural Science Foundation of Jiangsu Province ; National Key R&D Program of China ; DOE Office of Science ; US DOE Office of Science, Office of Basic Energy Sciences ; Distinguished professor project of Jiangsu province |
| 源URL | [http://ir.imr.ac.cn/handle/321006/175503]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Lai, Qingquan; Feng, Tao |
| 作者单位 | 1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Nanjing Univ Sci & Technol, Sch Mat Sci & Engn, Herbert Gleiter Inst Nanosci, Nanjing 210094, Peoples R China 3.Karlsruhe Inst Technol, Inst Nanotechnol, D-76021 Karlsruhe, Germany 4.Univ Munster, Inst Mat Phys, D-48149 Munster, Germany 5.Nanjing Tech Univ, Key Lab Light Weight Mat, Nanjing 211816, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Shangshu,Kou, Zongde,Lai, Qingquan,et al. Dislocation exhaustion and ultra-hardening of nanograined metals by phase transformation at grain boundaries[J]. NATURE COMMUNICATIONS,2022,13(1):8. |
| APA | Wu, Shangshu.,Kou, Zongde.,Lai, Qingquan.,Lan, Si.,Katnagallu, Shyam Swaroop.,...&Feng, Tao.(2022).Dislocation exhaustion and ultra-hardening of nanograined metals by phase transformation at grain boundaries.NATURE COMMUNICATIONS,13(1),8. |
| MLA | Wu, Shangshu,et al."Dislocation exhaustion and ultra-hardening of nanograined metals by phase transformation at grain boundaries".NATURE COMMUNICATIONS 13.1(2022):8. |
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。