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Superior low cycle fatigue property from cell structures in additively manufactured 316L stainless steel
Cui, Luqing1; Deng, Dunyong1; Jiang, Fuqing2; Peng, Ru Lin1; Xin, Tongzheng3; Mousavian, Reza Taherzadeh4; Yang, Zhiqing2,5; Moverare, Johan1
Corresponding AuthorYang, Zhiqing(yangzq@imr.ac.cn) ; Moverare, Johan(johan.moverare@liu.se)
2022-06-01
Source PublicationJOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN1005-0302
Volume111Pages:268-278
AbstractWe have investigated the low cycle fatigue (LCF) properties and the extent of strengthening in a dense additively manufactured stainless steel containing different volume fractions of cell structures but having all other microstructure characteristics the same. The samples were produced by laser powder bed fusion (L-PBF), and the concentration of cell structures was varied systematically by varying the annealing treatments. Load-controlled fatigue experiments performed on samples with a high fraction of cell structures reveal an up to 23 times increase in fatigue life compared to an essentially cell-free sample of the same grain configuration. Multiscale electron microscopy characterizations reveal that the cell structures serve as the soft barriers to the dislocation propagation and the partials are the main carrier for cyclic loading. The cell structures, stabilized by the segregated atoms and misorientation between the adjacent cells, are retained during the entire plastic deformation, hence, can continuously interact with dislocations, promote the formation of nanotwins, and provide massive 3D network obstacles to the dislocation motion. The compositional micro-segregation caused by the cellular solidification features serves as another non negligible strengthening mechanism to dislocation motion. Specifically, the cell structures with a high density of dislocation debris also appear to act as dislocation nucleation sites, very much like coherent twin boundaries. This work indicates the potential of additive manufacturing to design energy absorbent alloys with high performance by tailoring the microstructure through the printing process. (c) 2021 Published by Elsevier Ltd on behalf of Chinese Society for Metals. This is an open access article under the CC BY license ( http://creativecommons.org/licenses/by/4.0/ )
KeywordAdditive manufacturing 316L stainless steel Fatigue behavior Cellular structure Nanotwins
Funding OrganizationSwedish Governmental Agency for Innovation Systems (Vinnova) ; Science Foundation Ireland (SFI) ; Center for Additive Manufacturing-metal (CAM2) ; Ji Hua Laboratory
DOI10.1016/j.jmst.2021.10.006
Indexed BySCI
Language英语
Funding ProjectSwedish Governmental Agency for Innovation Systems (Vinnova)[2016-05175] ; Science Foundation Ireland (SFI)[16/RC/3872] ; Center for Additive Manufacturing-metal (CAM2) ; Ji Hua Laboratory[X210141TL210]
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000788811500007
PublisherJOURNAL MATER SCI TECHNOL
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/172570
Collection中国科学院金属研究所
Corresponding AuthorYang, Zhiqing; Moverare, Johan
Affiliation1.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.Univ New South Wales, Sch Mat Sci & Engn, Sydney, NSW 2052, Australia
4.Dublin City Univ, Adv Mfg Res Ctr, I Form, Dublin 9, Ireland
5.Ji Hua Lab, Foshan 528200, Peoples R China
Recommended Citation
GB/T 7714
Cui, Luqing,Deng, Dunyong,Jiang, Fuqing,et al. Superior low cycle fatigue property from cell structures in additively manufactured 316L stainless steel[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2022,111:268-278.
APA Cui, Luqing.,Deng, Dunyong.,Jiang, Fuqing.,Peng, Ru Lin.,Xin, Tongzheng.,...&Moverare, Johan.(2022).Superior low cycle fatigue property from cell structures in additively manufactured 316L stainless steel.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,111,268-278.
MLA Cui, Luqing,et al."Superior low cycle fatigue property from cell structures in additively manufactured 316L stainless steel".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 111(2022):268-278.
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