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

doi:10.1007/s10853-022-07046-6

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	Micro-scale thermodynamic model of microstructure and stress evolution in parts via selective laser melting
	Fang ZC(房泽臣)1,2; Wu ZL 1; Huang CG(黄晨光)2; Wu CW(吴臣武)2
通讯作者	Wu, Zhi-Lin([email protected]) ; Wu, Chen-Wu([email protected])
发表期刊	JOURNAL OF MATERIALS SCIENCE
	2022-03-11
页码	16
ISSN	0022-2461
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.
DOI	10.1007/s10853-022-07046-6
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000767744200007
关键词[WOS]	RESIDUAL-STRESS ; MOLECULAR-DYNAMICS ; SINTERING PROCESS ; ELECTRON-BEAM ; HEAT-SOURCE ; NANOPARTICLE ; RESISTIVITY ; SIMULATION ; GROWTH
WOS研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
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]
项目资助者	National Natural Science Foundation of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; Postgraduate Research & Practice Innovation Program of Jiangsu Province
论文分区	二类
力学所作者排名	1
RpAuthor	Wu, Zhi-Lin ; Wu, Chen-Wu
引用统计	被引频次：7[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/88746
专题	流固耦合系统力学重点实验室
作者单位	1.Nanjing Univ Sci & Technol, Sch Mech Engn, Nanjing 210094, Peoples R China; 2.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Fang ZC,Wu ZL,Huang CG,et al. Micro-scale thermodynamic model of microstructure and stress evolution in parts via selective laser melting[J]. JOURNAL OF MATERIALS SCIENCE,2022:16.Rp_Au:Wu, Zhi-Lin, Wu, Chen-Wu
APA	房泽臣,Wu ZL,黄晨光,&吴臣武.(2022).Micro-scale thermodynamic model of microstructure and stress evolution in parts via selective laser melting.JOURNAL OF MATERIALS SCIENCE,16.
MLA	房泽臣,et al."Micro-scale thermodynamic model of microstructure and stress evolution in parts via selective laser melting".JOURNAL OF MATERIALS SCIENCE (2022):16.

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