| About this Abstract |
| Meeting |
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
| Symposium
|
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
| Presentation Title |
Analysis of Porosity in LPBF SS316L by X-Ray Computed Tomography |
| Author(s) |
Tasrif Ul Anwar, Patrick Merighe, Nadia Kouraytem |
| On-Site Speaker (Planned) |
Tasrif Ul Anwar |
| Abstract Scope |
Laser Powder Bed Fusion (LPBF) is a widely utilized additive manufacturing process for fabricating small parts with complex features. However, one notable drawback of LPBF is the potential variation in mechanical properties caused by the influence of key process parameters on the underlying structures. Thus, understanding the relationships between process and defect structure in printed components is crucial. In this study, Stainless Steel 316L (SS316L) test coupons were produced using LPBF with different laser parameters. To examine porosity and its spatial distribution, X-ray computed tomography (XCT) was utilized. Lack of fusion (LOF), sintering (an extreme of LOF), near dense, and keyhole defects were identified using the XCT data. These discoveries make it possible to print nearly dense samples, which are expected to exhibit superior mechanical properties compared to their porous counterparts. The results of this study will facilitate the widespread use of LPBF SS316L components, particularly in the energy industry. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |