Enhanced mechanical performance of gradient-structured CoCrFeMnNi high-entropy alloys induced by industrial shot-blasting
文献类型：期刊论文
| 作者 | Zhang,Ming-Zhi8; Zhang K(张坤)7 ; Song,Kai-Kai5,6,8; Zou,Xiao-Yu5; Song,Wei-Dong6; Li,Ke-Feng4; Hu,Li-Na3; Zhang,Ze-Qun1,2; Eckert,Juergen1,2
|
| 刊名 | RARE METALS
 |
| 出版日期 | 2022-12-07 |
| 页码 | 12 |
| ISSN号 | 1001-0521 |
| 关键词 | High-entropy alloy Shot blasting Gradient structure Mechanical property Deformation mechanism |
| DOI | 10.1007/s12598-022-02164-1 |
| 通讯作者 | Song, Kai-Kai(songkaikai8297@gmail.com) ; Li, Ke-Feng(yunxing0001@163.com) |
| 英文摘要 | In this study, CoCrFeMnNi high-entropy alloys (HEAs) with a surface gradient nanostructure were produced using industrial shot blasting, which improved their mechanical properties compared to the untreated alloy. The severely plastically deformed (SPD) surface layer had a multi-scale hierarchical structure with a high density of stacking faults, deformation nanotwins, and amorphous domains. The depth of the SPD layer steadily increased as the shot-blasting time increased. The differences in the microhardness and tensile strength before and after shot-blasting demonstrated the significant effect of the SPD layer on the mechanical performance. The microhardness of the homogenized HEA was similar to 5 GPa. In comparison, the maximum microhardness of the specimens after 20 min of shot blasting was similar to 8.0 GPa at the surface. The yield strength also improved by 178%, and a large ductility of similar to 36% was retained. Additional nanograin boundary, stacking fault, and twin strengthening within the gradient-nanostructured surface layer caused the strength to increase. During tensile deformation, strain concentration began at the surface of the specimen and gradually spread to the interior. Thus, the gradient-nanostructured surface layer with improved strain hardening can prevent early necking and ensure steady plastic deformation so that high toughness is achieved. |
| 分类号 | 一类 |
| WOS关键词 | STACKING-FAULT ENERGY ; DEFORMATION ; MICROSTRUCTURE ; EVOLUTION ; DISLOCATION ; STRENGTH ; STEEL ; AL |
| 资助项目 | Shenzhen Science and Technology Program[JCYJ20210324121011031] ; National Natural Science Foundation of China[51871132] ; National Natural Science Foundation of China[51971120] ; Free Exploring Basic Research Project of Shenzhen Virtual University Park[2021Szvup069] ; Opening Project of the State Key Laboratory of Explosion Science and Technology (Beijing Institutes of Technology)[KFJJ21-08M] ; Natural Science Foundation of Shandong Province[ZR2020ME002] |
| WOS研究方向 | Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000894954700001 |
| 资助机构 | Shenzhen Science and Technology Program ; National Natural Science Foundation of China ; Free Exploring Basic Research Project of Shenzhen Virtual University Park ; Opening Project of the State Key Laboratory of Explosion Science and Technology (Beijing Institutes of Technology) ; Natural Science Foundation of Shandong Province |
| 其他责任者 | Song, Kai-Kai ; Li, Ke-Feng |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/91281]  |
| 专题 | 力学研究所_国家微重力实验室 |
| 作者单位 | 1.Montanunivers Leoben, Dept Mat Sci, A-8700 Leoben, Austria 2.Austrian Acad Sci, Erich Schmid Inst Mat Sci, A-8700 Leoben, Austria; 3.Shandong Univ, Key Lab Liquid Solid Struct Evolut & Proc Mat, Minist Educ, Jinan 250061, Peoples R China; 4.Guangdong Acad Sci, Guangdong Inst Mat & Proc, Guangzhou 510650, Peoples R China; 5.Shandong Univ, Sch Mech Elect & Informat Engn, Weihai 264209, Peoples R China; 6.Beijing Inst Technol, State Key Lab Explos Sci & Technol, Beijing 100081, Peoples R China; 7.Chinese Acad Sci, Inst Mech, CAS Key Lab Micrograv, Nat Micrograv Lab, Beijing 100190, Peoples R China; 8.Shenzhen Res Inst Shandong Univ, Shenzhen 518057, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Zhang,Ming-Zhi,Zhang K,Song,Kai-Kai,et al. Enhanced mechanical performance of gradient-structured CoCrFeMnNi high-entropy alloys induced by industrial shot-blasting[J]. RARE METALS,2022:12. |
| APA | Zhang,Ming-Zhi.,张坤.,Song,Kai-Kai.,Zou,Xiao-Yu.,Song,Wei-Dong.,...&Eckert,Juergen.(2022).Enhanced mechanical performance of gradient-structured CoCrFeMnNi high-entropy alloys induced by industrial shot-blasting.RARE METALS,12. |
| MLA | Zhang,Ming-Zhi,et al."Enhanced mechanical performance of gradient-structured CoCrFeMnNi high-entropy alloys induced by industrial shot-blasting".RARE METALS (2022):12. |
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。