About this Abstract |
| Meeting |
2026 AWS Professional Program
|
| Symposium
|
2026 AWS Professional Program
|
| Presentation Title |
Hot Deformation Behavior of Wire-Arc Additively Manufactured 316L Stainless Steel under non-isothermal conditions |
| Author(s) |
Bishal Silwal, stibitz christin |
| On-Site Speaker (Planned) |
Bishal Silwal |
| Abstract Scope |
This study investigates the hot-compression behavior of 316L stainless steel fabricated via Wire Arc Additive Manufacturing (WAAM) to evaluate its viability as a preform for subsequent forging operations. To ensure stable thermo-mechanical boundary conditions, a custom closed-loop, temperature-controlled platen system was utilized. Preheated specimens were compressed at elevated temperatures under strain rates of 0.01 s⁻¹ and 0.1 s⁻¹. Flow stress analysis revealed that friction-induced barreling led to uneven deformation, causing an 8–10% overestimation of flow stress prior to geometric correction. Furthermore, finite element simulations highlighted pronounced non-isothermal fields: lower strain rates (0.01 s⁻¹) resulted in significant cooling due to prolonged die contact, while higher rates (0.1 s⁻¹) maintained elevated core temperatures via adiabatic heating. Finally, microstructural characterization using EBSD was conducted to investigate the underlying microstructural evolution and deformation mechanisms of the preform under these specific processing conditions. |
| Proceedings Inclusion? |
Undecided |