| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Processing Effects on Microstructure and Material Performance
|
| Presentation Title |
A-111: Influence of the Partial Pressure on the 316L Stainless Steel fusion with the Selective Laser Melting Process |
| Author(s) |
Alicia Annovazzi, Nouredine Fenineche, Benjamin Vayre |
| On-Site Speaker (Planned) |
Alicia Annovazzi |
| Abstract Scope |
The Selective Laser Melting process is an additive manufacturing process based on superposition of melted metal powder layers by a LASER beam. Consequently, under such thermal conditions, oxidations can quickly occurr. To avoid the contamination of the metallic powder during the melting, the process is carried in a sealed enclosure with an inert atmosphere. Thus, fusion conditions can be modified, in particularly the partial pressure. The objective of the work is to determine the fusion state difference between experiments at atmospheric pressure with argon, and in the case of low pressure (rough vacuum). Experiments have been made with 316L Stainless Steel with the aim of: realizing tracks and parts in different pressure conditions and fusion parameters; understanding the physical phenomena which impact the laser-matter interaction, influence the particles ejections and change the fusion morphology.
To do so, Scanning Electron Microscopy and rapid camera have been used to highlight the evolution. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |