Dependence of microstructures on fatigue performance of polycrystals: A comparative study of conventional and additively manufactured 316L stainless steel

doi:10.1016/j.ijplas.2021.103172

IMR OpenIR

	Dependence of microstructures on fatigue performance of polycrystals: A comparative study of conventional and additively manufactured 316L stainless steel
	Cui, Luqing 1; Jiang, Fuqing 2; Peng, Ru Lin 1; Mousavian, Reza Taherzadeh 3; Yang, Zhiqing 2,4; Moverare, Johan 1
通讯作者	Yang, Zhiqing(yangzq@imr.ac.cn) ; Moverare, Johan(johan.moverare@liu.se)
	2022-02-01
发表期刊	INTERNATIONAL JOURNAL OF PLASTICITY
ISSN	0749-6419
卷号	149 页码:15
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.
关键词	Fatigue behavior 316 L Additive manufacturing Unique microstructure characteristics Deformation mechanisms
资助者	Swedish Governmental Agency for Innovation Systems (Vinnova) ; Center for Additive Manufacturing-metal (CAM2) ; Science Foundation Ireland (SFI) ; European Regional Development Fund ; Ji Hua Laboratory
DOI	10.1016/j.ijplas.2021.103172
收录类别	SCI
语种	英语
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
WOS类目	Engineering, Mechanical ; Materials Science, Multidisciplinary ; Mechanics
WOS记录号	WOS:000779914900001
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：45[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/172780
专题	中国科学院金属研究所
通讯作者	Yang, Zhiqing; Moverare, Johan
作者单位	1.Linkoping Univ, Dept Management & Engn, Div Engn Mat, SE-58183 Linkoping, Sweden 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 3.Dublin City Univ, Adv Mfg Res Ctr, I Form, Dublin 9, Ireland 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.