Numerical investigation on effects of operating conditions and final dimension predictions in laser powder bed fusion of molybdenum

doi:10.1016/j.addma.2023.103783

IMR OpenIR

	Numerical investigation on effects of operating conditions and final dimension predictions in laser powder bed fusion of molybdenum
	Wu, Yuhang 1; Wu, Qiong 1; Li, Meng 1; Wang, Ju 1; Yao, Dengzhi 1; Luo, Hao 2; An, Xizhong 1; Fu, Haitao 1; Zhang, Hao 1; Yang, Xiaohong 1; Zou, Qingchuan 1; Li, Shujun 3; Ji, Haibin 3; Zhang, Xing 3
通讯作者	An, Xizhong(anxz@mail.neu.edu.cn)
	2023-08-25
发表期刊	ADDITIVE MANUFACTURING
ISSN	2214-8604
卷号	76 页码:14
摘要	In this article, three-dimensional discrete element method (DEM) and computational fluid dynamics (CFD) coupled numerical simulations were carried out to investigate the single/multi-track and multi-layer printing of Molybdenum (Mo) powder using laser powder bed fusion (LPBF) approach at meso-scale. In the whole process, the effects of powder spreading and selective melting in multi-layer fabricating were analyzed, through which a mathematical correlation was derived to quantify the final stable dimensions of the powder bed and the printed region. Results show that appropriate laser scanning velocity, laser power and adequate powder bed density are indispensable for a smooth and continuous molten track. The scanning hatch distance should not exceed the molten pool width. The application of a certain preheating temperature can improve the inter-track connectivity. During multi-layer melting, the established quantitative correlations in the steady state between the set gap height (HN), actual layer thickness (hA), molten layer thickness (hM) and fusion ratio (rho F) are hA=HN/rho F and hM=HN, respectively, which have been verified by the results through both physical experiments and numerical simulations. The results obtained have both theoretical significance and practical value in optimizing the process parameters for Mo material in LPBF.
关键词	DEM/CFD simulations Laser powder bed fusion Molybdenum additive manufacturing Multi-layer spreading and printing Mechanism analysis
资助者	Liaoning Revitalization Talents Program ; CAS Interdisciplinary Innovation Team Project of China
DOI	10.1016/j.addma.2023.103783
收录类别	SCI
语种	英语
资助项目	Liaoning Revitalization Talents Program[XLYC1805007] ; CAS Interdisciplinary Innovation Team Project of China[JCTD-2020-10]
WOS研究方向	Engineering ; Materials Science
WOS类目	Engineering, Manufacturing ; Materials Science, Multidisciplinary
WOS记录号	WOS:001146766800001
出版者	ELSEVIER
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/183561
专题	中国科学院金属研究所
通讯作者	An, Xizhong
作者单位	1.Northeastern Univ, Sch Met, Key Lab Ecol Met Multimet Mineral, Minist Educ, Shenyang 110819, Peoples R China 2.South China Univ Technol, Natl Engn Res Ctr Near Net Shape Forming Met Mat, Guangzhou 510640, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shichangxu Innovat Ctr Adv Mat, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Wu, Yuhang,Wu, Qiong,Li, Meng,et al. Numerical investigation on effects of operating conditions and final dimension predictions in laser powder bed fusion of molybdenum[J]. ADDITIVE MANUFACTURING,2023,76:14.
APA	Wu, Yuhang.,Wu, Qiong.,Li, Meng.,Wang, Ju.,Yao, Dengzhi.,...&Zhang, Xing.(2023).Numerical investigation on effects of operating conditions and final dimension predictions in laser powder bed fusion of molybdenum.ADDITIVE MANUFACTURING,76,14.
MLA	Wu, Yuhang,et al."Numerical investigation on effects of operating conditions and final dimension predictions in laser powder bed fusion of molybdenum".ADDITIVE MANUFACTURING 76(2023):14.