Dependence of microstructures on fatigue performance of polycrystals: A comparative study of conventional and additively manufactured 316L stainless steel
文献类型：期刊论文
| 作者 | Cui, Luqing2; Jiang, Fuqing3; Peng, Ru Lin2; Mousavian, Reza Taherzadeh1; Yang, Zhiqing3,4; Moverare, Johan2 |
| 刊名 | INTERNATIONAL JOURNAL OF PLASTICITY
 |
| 出版日期 | 2022-02-01 |
| 卷号 | 149页码:15 |
| ISSN号 | 0749-6419 |
| 关键词 | Fatigue behavior 316 L Additive manufacturing Unique microstructure characteristics Deformation mechanisms |
| DOI | 10.1016/j.ijplas.2021.103172 |
| 通讯作者 | Yang, Zhiqing(yangzq@imr.ac.cn) ; Moverare, Johan(johan.moverare@liu.se) |
| 英文摘要 | The fatigue properties and microstructural evolution of 316 L stainless steel (316LSS) manufactured by laser powder bed fusion (L-PBF) were systematically studied and compared with its wrought counterpart. The as-built L-PBF 316LSS shows a pronounced heterogeneity, not only structurally but also chemically, with a unique microstructure of highly serrated grain boundaries, bimodal grain structure, nano-precipitates, solidification cell structures, and chemical segregations. The microindentation test showed that the hardness of the as-built L-PBF 316LSS reached 2.589 GPa, which was about 1.6 times higher than that of the wrought solution annealed counterpart, and the sparser slip steps around indentations revealed its greater dislocation storage capability. The S-N curves indicated that the fatigue resistance of the as-built L-PBF 316LSS was significantly better than that of the wrought solution annealed samples, and this was ascribed to its unique microstructural characteristics, especially the pre-existing high-density dislocations and chemical microsegregation within cellular solidification features. Furthermore, the enhanced planar slip in L-PBF 316LSS by its unique microstructure, especially the formation of deformation twins, delays the strain localization and restrains slip band generation, thereby significantly inhibiting crack initiation, and contributing greatly to the fatigue performance. The unique cell structure appears to be more effective in improving the low-cycle fatigue performance of L-PBF 316LSS due to the enhanced ductility. |
| 资助项目 | Swedish Governmental Agency for Innovation Systems (Vinnova)[2016-05175] ; Center for Additive Manufacturing-metal (CAM2) ; Science Foundation Ireland (SFI)[16/RC/3872] ; European Regional Development Fund ; Ji Hua Laboratory[X210141TL210] |
| WOS研究方向 | Engineering ; Materials Science ; Mechanics |
| 语种 | 英语 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| WOS记录号 | WOS:000779914900001 |
| 资助机构 | Swedish Governmental Agency for Innovation Systems (Vinnova) ; Center for Additive Manufacturing-metal (CAM2) ; Science Foundation Ireland (SFI) ; European Regional Development Fund ; Ji Hua Laboratory |
| 源URL | [http://ir.imr.ac.cn/handle/321006/172779]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Yang, Zhiqing; Moverare, Johan |
| 作者单位 | 1.Dublin City Univ, Adv Mfg Res Ctr, I Form, Dublin 9, Ireland 2.Linkoping Univ, Dept Management & Engn, Div Engn Mat, SE-58183 Linkoping, Sweden 3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 4.Ji Hua Lab, Foshan 528200, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cui, Luqing,Jiang, Fuqing,Peng, Ru Lin,et al. Dependence of microstructures on fatigue performance of polycrystals: A comparative study of conventional and additively manufactured 316L stainless steel[J]. INTERNATIONAL JOURNAL OF PLASTICITY,2022,149:15. |
| APA | Cui, Luqing,Jiang, Fuqing,Peng, Ru Lin,Mousavian, Reza Taherzadeh,Yang, Zhiqing,&Moverare, Johan.(2022).Dependence of microstructures on fatigue performance of polycrystals: A comparative study of conventional and additively manufactured 316L stainless steel.INTERNATIONAL JOURNAL OF PLASTICITY,149,15. |
| MLA | Cui, Luqing,et al."Dependence of microstructures on fatigue performance of polycrystals: A comparative study of conventional and additively manufactured 316L stainless steel".INTERNATIONAL JOURNAL OF PLASTICITY 149(2022):15. |
入库方式： OAI收割
来源：金属研究所
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