中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
The Influence of Metastable Cellular Structure on Deformation Behavior in Laser Additively Manufactured 316L Stainless Steel

文献类型:期刊论文

作者Li, Na2; Li, Zhengyang2; Wei, Yujie1,2; Li ZY(李正阳); Li ZY(李正阳); Wei YJ(魏宇杰)
刊名NANOMATERIALS
出版日期2021-11-01
卷号11期号:11页码:13
关键词laser additive manufacturing metastable cellular structures 316L stainless steel coherent precipitates stacking fault energy
DOI10.3390/nano11112859
通讯作者Wei, Yujie(yujie_wei@lnm.imech.ac.cn)
英文摘要Metastable cellular structures (MCSs) play a crucial role for the mechanical performance in concentrated alloys during non-equilibrium solidification process. In this paper, typifying the heterogeneous 316L stainless steel by laser additive manufacturing (LAM) process, we examine the microstructures in cellular interiors and cellular boundaries in detail, and reveal the interactions of dislocations and twins with cellular boundaries. Highly ordered coherent precipitates present along the cellular boundary, resulting from spinodal decomposition by local chemical fluctuation. The co-existences of precipitates and high density of tangled dislocations at cellular boundaries serve as walls for extra hardening. Furthermore, local chemical fluctuation in MCSs inducing variation in stacking fault energy is another important factor for ductility enhancement. These findings shed light on possible routines to further alter nanostructures, including precipitates and dislocation structures, by tailoring local chemistry in MCSs during LAM.
WOS关键词STACKING-FAULT ENERGY ; HIGH-ENTROPY ALLOYS ; HIGH-STRENGTH ; SPINODAL DECOMPOSITION ; MICROSTRUCTURAL EVOLUTION ; MECHANICAL-PROPERTIES ; DISLOCATION ; SEGREGATION ; SHEARING ; DENSITY
资助项目Multiscale Problems in Nonlinear Mechanics[11988102] ; Multiscale Problems in Nonlinear Mechanics[11790291] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB22020200]
WOS研究方向Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种英语
WOS记录号WOS:000724847200001
资助机构Multiscale Problems in Nonlinear Mechanics ; Strategic Priority Research Program of the Chinese Academy of Sciences
源URL[http://dspace.imech.ac.cn/handle/311007/88049]  
专题力学研究所_非线性力学国家重点实验室
通讯作者Wei, Yujie
作者单位1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China
推荐引用方式
GB/T 7714
Li, Na,Li, Zhengyang,Wei, Yujie,et al. The Influence of Metastable Cellular Structure on Deformation Behavior in Laser Additively Manufactured 316L Stainless Steel[J]. NANOMATERIALS,2021,11(11):13.
APA Li, Na,Li, Zhengyang,Wei, Yujie,李正阳,李正阳,&魏宇杰.(2021).The Influence of Metastable Cellular Structure on Deformation Behavior in Laser Additively Manufactured 316L Stainless Steel.NANOMATERIALS,11(11),13.
MLA Li, Na,et al."The Influence of Metastable Cellular Structure on Deformation Behavior in Laser Additively Manufactured 316L Stainless Steel".NANOMATERIALS 11.11(2021):13.

入库方式: OAI收割

来源:力学研究所

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