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Micro-scale thermodynamic model of microstructure and stress evolution in parts via selective laser melting

文献类型：期刊论文

作者Fang, Ze-Chen1,2; Wu, Zhi-Lin2; Huang, Chen-Guang1; Wu, Chen-Wu1; Huang CG(黄晨光); Wu CW(吴臣武); Huang CG(黄晨光)
刊名JOURNAL OF MATERIALS SCIENCE
出版日期2022-03-11
页码16
ISSN号0022-2461
DOI10.1007/s10853-022-07046-6
通讯作者Wu, Zhi-Lin(wuruinan-1994@mail.njust.edu.cn) ; Wu, Chen-Wu(chenwuwu@imech.ac.cn)
英文摘要The thermodynamic state changes during selective laser melting (SLM) processing dominate the microstructure and mechanical properties of the built parts. Improper operational parameters often lead to uneven microscopic morphology, microcracks, distortions, and other failures. The key to controlling the microstructure of the forming metal lies in an in-depth understanding of the micro-scale thermodynamics of this process. A micro-scale thermodynamic model was developed herein to predict the microstructure and internal stress evolution in parts fabricated by SLM with two typical scanning strategies. The modified two-temperature (TTM) model was employed to discover the dominant interface thermodynamic phenomenon in unitary path scanning and the novel symmetrical multi-path scanning capable of reliving residual stress and homogenizing microstructure. The real-time identifying method of temperature, microstructure, and stress could be further applied to closed-loop control of the SLM process.
WOS关键词RESIDUAL-STRESS ; MOLECULAR-DYNAMICS ; SINTERING PROCESS ; ELECTRON-BEAM ; HEAT-SOURCE ; NANOPARTICLE ; RESISTIVITY ; SIMULATION ; GROWTH
资助项目National Natural Science Foundation of China[11572327] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDA17030100] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDA17030200] ; Postgraduate Research & Practice Innovation Program of Jiangsu Province[KYCX19_0273]
WOS研究方向Materials Science
语种英语
WOS记录号WOS:000767744200007
资助机构National Natural Science Foundation of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; Postgraduate Research & Practice Innovation Program of Jiangsu Province
源URL[http://dspace.imech.ac.cn/handle/311007/88745]  
专题力学研究所_流固耦合系统力学重点实验室(2012-)
通讯作者Wu, Zhi-Lin; Wu, Chen-Wu
作者单位1.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China
2.Nanjing Univ Sci & Technol, Sch Mech Engn, Nanjing 210094, Peoples R China
推荐引用方式
GB/T 7714		 Fang, Ze-Chen,Wu, Zhi-Lin,Huang, Chen-Guang,et al. Micro-scale thermodynamic model of microstructure and stress evolution in parts via selective laser melting[J]. JOURNAL OF MATERIALS SCIENCE,2022:16.
APA Fang, Ze-Chen.,Wu, Zhi-Lin.,Huang, Chen-Guang.,Wu, Chen-Wu.,黄晨光.,...&黄晨光.(2022).Micro-scale thermodynamic model of microstructure and stress evolution in parts via selective laser melting.JOURNAL OF MATERIALS SCIENCE,16.
MLA Fang, Ze-Chen,et al."Micro-scale thermodynamic model of microstructure and stress evolution in parts via selective laser melting".JOURNAL OF MATERIALS SCIENCE (2022):16.

入库方式： OAI收割

来源：力学研究所

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