| The Influence of Metastable Cellular Structure on Deformation Behavior in Laser Additively Manufactured 316L Stainless Steel | |
Li N(李娜)1; Li ZY(李正阳)1 ; Wei YJ(魏宇杰)1,2
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| Corresponding Author | Wei, Yujie([email protected]) |
| Source Publication | NANOMATERIALS
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| 2021-11-01 | |
| Volume | 11Issue:11Pages:13 |
| Abstract | 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. |
| Keyword | laser additive manufacturing metastable cellular structures 316L stainless steel coherent precipitates stacking fault energy |
| DOI | 10.3390/nano11112859 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000724847200001 |
| WOS Keyword | STACKING-FAULT ENERGY ; HIGH-ENTROPY ALLOYS ; HIGH-STRENGTH ; SPINODAL DECOMPOSITION ; MICROSTRUCTURAL EVOLUTION ; MECHANICAL-PROPERTIES ; DISLOCATION ; SEGREGATION ; SHEARING ; DENSITY |
| WOS Research Area | Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics |
| WOS Subject | Chemistry, Multidisciplinary ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied |
| Funding Project | Multiscale Problems in Nonlinear Mechanics[11988102] ; Multiscale Problems in Nonlinear Mechanics[11790291] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB22020200] |
| Funding Organization | Multiscale Problems in Nonlinear Mechanics ; Strategic Priority Research Program of the Chinese Academy of Sciences |
| Classification | 二类/Q1 |
| Ranking | 1 |
| Contributor | Wei, Yujie |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/88050 |
| Collection | 非线性力学国家重点实验室 |
| Affiliation | 1.Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China; 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China |
| Recommended Citation GB/T 7714 | Li N,Li ZY,Wei YJ. The Influence of Metastable Cellular Structure on Deformation Behavior in Laser Additively Manufactured 316L Stainless Steel[J]. NANOMATERIALS,2021,11,11,:13.Rp_Au:Wei, Yujie |
| APA | 李娜,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 | 李娜,et al."The Influence of Metastable Cellular Structure on Deformation Behavior in Laser Additively Manufactured 316L Stainless Steel".NANOMATERIALS 11.11(2021):13. |
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| The Influence of Met（6117KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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