Superior fracture toughness with high yield strength in a high-Mn steel induced by heterogeneous grain structure
文献类型：期刊论文
| 作者 | Zhang, Shengde1,2 ; Yang, Muxin2; Wu, Xiaolei1,2; Yuan, Fuping1,2; Wu XL(武晓雷); Yuan FP(袁福平); Yang MX(杨沐鑫); Zhang SD(张胜德); Wu XL(武晓雷); Yuan FP(袁福平)
|
| 刊名 | MATERIALS & DESIGN
 |
| 出版日期 | 2023 |
| 卷号 | 225页码:11 |
| ISSN号 | 0264-1275 |
| 关键词 | Heterogeneous grain structures Fracture toughness Strain hardening, Microband-induced plasticity Ductility Mn austenitic steels |
| DOI | 10.1016/j.matdes.2022.111473 |
| 通讯作者 | Yuan, Fuping(fpyuan@lnm.imech.ac.cn) |
| 英文摘要 | Heterogeneous grain structures were designed in a high Mn steel (Fe28Mn10Al1.00C), and the tensile properties and fracture toughness were investigated and compared with those for homogeneous structures. The heterogeneous grain structures display larger tensile ductility, stronger strain hardening and higher fracture toughness at the similar yield strength level. Hetero-deformation-induced hardening is found to play an important role in the heterogeneous grain structures, resulting in better mechanical properties. The size of plastic zone and the strain hardening capacity around the crack tip for the heterogeneous grain structures are found to be much larger/higher than those for the homogeneous grain structures at the same level of yield strength, resulting in better fracture toughness. High density of geometrically necessary dislocations and grain refinement are induced at the adjacent area of the main crack path, and numerous microvoids are also observed besides the main crack for the heterogeneous grain structures, resulting in more energy dissipation for higher fracture toughness. The deformation mechanisms around the crack tip are highly dependent on the magnitude of plastic strain and the grain size. The observed higher fracture toughness in the heterogeneous grain structures can be partly attributed to the formation of microbands. (c) 2022 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
| WOS关键词 | STRAIN-HARDENING MECHANISMS ; HIGH-TENSILE DUCTILITY ; INDUCED PLASTICITY ; MICROSTRUCTURE EVOLUTION ; DEFORMATION ; BEHAVIOR ; ALLOY ; STATE |
| 资助项目 | NSFC Basic Science Center Program for Multiscale Problems in Nonlinear Mechanics[11988102] ; National Key R&D Program of China[2017YFA0204402] ; National Natural Science Foundation of China[52192591] ; National Natural Science Foundation of China[11790293] |
| WOS研究方向 | Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000899026100004 |
| 资助机构 | NSFC Basic Science Center Program for Multiscale Problems in Nonlinear Mechanics ; National Key R&D Program of China ; National Natural Science Foundation of China |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/91451]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 通讯作者 | Yuan, Fuping |
| 作者单位 | 1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Shengde,Yang, Muxin,Wu, Xiaolei,et al. Superior fracture toughness with high yield strength in a high-Mn steel induced by heterogeneous grain structure[J]. MATERIALS & DESIGN,2023,225:11. |
| APA | Zhang, Shengde.,Yang, Muxin.,Wu, Xiaolei.,Yuan, Fuping.,武晓雷.,...&Zhang SD.(2023).Superior fracture toughness with high yield strength in a high-Mn steel induced by heterogeneous grain structure.MATERIALS & DESIGN,225,11. |
| MLA | Zhang, Shengde,et al."Superior fracture toughness with high yield strength in a high-Mn steel induced by heterogeneous grain structure".MATERIALS & DESIGN 225(2023):11. |
入库方式： OAI收割
来源：力学研究所
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。