Sensitivity of Melt Pool Dimensions and Keyhole to Laser Beam Diameter
| Autor: | N. Hassine, S. Chatti, M. Ben Slama, L. Kolsi |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Annals of "Dunarea de Jos" University of Galati, Fascicle XII, Welding Equipment and Technology, Vol 32, Pp 30-36 (2021) |
| Druh dokumentu: | article |
| ISSN: | 1221-4639 2668-6163 |
| DOI: | 10.35219/awet.2021.04 |
| Popis: | The laser powder bed fusion process has witnessed a huge interest in recent years since it has the potential to produce challenging shapes in a broad range of applications. The process parameters have a considerable effect on melt pool size and on the development of defect porosity. This paper predicts numerically the effect of a large range of laser beam diameters on melt pool dimensions and on the occurrence of porosity defects such as keyhole. A series of single beads of Inconel IN625 was made using various combinations of beam diameters, scan speeds, and laser powers. The use of a large diameter was more suitable rather than a small diameter as it ensures a large and shallow heat affected zone, thus decreasing the development of the keyhole defect. Our numerical results correlate satisfactorily with experimental finding from literature. |
| Databáze: | Directory of Open Access Journals |
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