About this Abstract |
| Meeting |
11th Conference on Trends in Welding Research + Additive Manufacturing (TWR+AM)
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| Symposium
|
11th Conference on Trends in Welding Research + Additive Manufacturing (TWR+AM)
|
| Presentation Title |
Robotic Wire Arc Additive Manufacturing of 316L Stainless Steel for Forging Preforms |
| Author(s) |
Bishal Silwal, Stibitz Christin, Hossein Taheri |
| On-Site Speaker (Planned) |
Bishal Silwal |
| Abstract Scope |
Robotic Wire Arc Additive Manufacturing (WAAM) enables high-deposition-rate fabrication of near-net-shape parts and components. This study evaluates WAAM-fabricated 316L stainless steel through combined microstructural and mechanical characterization for forging preforms. Walls were deposited using a robotic gas metal arc welding (GMAW) system with controlled heat input. Microstructural analysis revealed a predominantly austenitic matrix with retained δ-ferrite aligned along the build direction due to directional solidification and cyclic reheating. Mechanical response was assessed using room-temperature compression and hot compression tests at 1600 °F, 1800 °F, and 2000 °F to replicate forging conditions. The alloy exhibited favorable flow behavior and adequate hot ductility, demonstrating excellent forgeability across the tested temperature range. These results demonstrate an opportunity to use robotic WAAM as a viable preform manufacturing route that reduces material waste, shortens lead times, and enables effective integration of additive manufacturing with conventional forging operations. |
| Proceedings Inclusion? |
Undecided |