| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Microstructural and Mechanical Long-term Stability of AM Materials
|
| Presentation Title |
Temperature-Dependent Fracture Behavior of Laser Powder Bed Fusion SUS316L: Charpy Impact and Tensile Testing |
| Author(s) |
Tae Hyeong Kim, Jun Seok Lee, Haeum Park, Jeong Min Park, Jae Wung Bae |
| On-Site Speaker (Planned) |
Tae Hyeong Kim |
| Abstract Scope |
Stainless steel 316L (SUS316L) manufactured by the L-PBF (Laser-Powder Bed Fusion) process is widely known for its excellent combination of strength and ductility. However, while the focus is mainly on the mechanical properties under static-loading conditions, there is a lack of research on the mechanical properties under dynamic-loading conditions associated with the ductile-brittle transition. Despite the material's remarkable mechanical properties, its ductile to brittle transition can limit its potential applications. In this research, Charpy impact tests were performed at various temperatures to investigate the fracture behavior and microstructural evolution of L-PBF SUS316L material with respect to temperature and strain rate. We found pre-existing defects formed during the processing, and these defects are related to the formation of cracks. Microstructural evolution was investigated based on strain rate and temperature, and quasi-static tensile tests were conducted at room and cryogenic temperatures to identify temperature-dependent fracture behavior. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Iron and Steel, Mechanical Properties |