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)![]() ![]() ![]() |
刊名 | NANOMATERIALS
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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 |
DOI | 10.3390/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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