Numerical investigation on effects of operating conditions and final dimension predictions in laser powder bed fusion of molybdenum
文献类型：期刊论文
| 作者 | Wu, Yuhang1; Wu, Qiong1; Li, Meng1; Wang, Ju1; Yao, Dengzhi1; Luo, Hao2; An, Xizhong1; Fu, Haitao1; Zhang, Hao1; Yang, Xiaohong1 |
| 刊名 | ADDITIVE MANUFACTURING
 |
| 出版日期 | 2023-08-25 |
| 卷号 | 76页码:14 |
| 关键词 | DEM/CFD simulations Laser powder bed fusion Molybdenum additive manufacturing Multi-layer spreading and printing Mechanism analysis |
| ISSN号 | 2214-8604 |
| DOI | 10.1016/j.addma.2023.103783 |
| 通讯作者 | An, Xizhong(anxz@mail.neu.edu.cn) |
| 英文摘要 | 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. |
| 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 |
| 语种 | 英语 |
| WOS记录号 | WOS:001146766800001 |
| 出版者 | ELSEVIER |
| 资助机构 | Liaoning Revitalization Talents Program ; CAS Interdisciplinary Innovation Team Project of China |
| 源URL |  |
| 专题 | 金属研究所_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. |
入库方式： OAI收割
来源：金属研究所
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