About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Developments in Advanced Nuclear Structural Materials
|
| Presentation Title |
Effects of Thermal Annealing on Microstructure and Mechanical Strength of Additively Manufactured 316H Stainless Steel |
| Author(s) |
Panayotis Manganaris, Mahmoud Hawary, Xuan Zhang, Wen Jiang, Korukonda L Murty, Ram V Mohan, Lingfeng He |
| On-Site Speaker (Planned) |
Panayotis Manganaris |
| Abstract Scope |
Additively manufactured 316H stainless steel (AM 316H SS) shows strong potential for advanced nuclear reactor applications. However, the unique thermal histories associated with additive manufacturing processes such as Laser Powder Bed Fusion (LPBF) result in microstructures that differ significantly from those of conventionally processed materials. Post-build heat treatments are commonly employed to relieve residual stress and reduce manufacturing-induced defects, often leading to substantial microstructural changes. In this study, LPBF-manufactured 316H SS was thermally annealed under various conditions, and its microstructural evolution was characterized using X-ray diffraction and multiple electron microscopy techniques. Tensile strength will be evaluated at room temperature following ASTM standards. Additionally, the mechanical strength of thermally annealed samples will be compared to that of as-built and wrought counterparts. These results will support the development of a microstructure-based physics model to predict the mechanical strength of LPBF-manufactured 316H SS during post-build treatments and long-term aging. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Additive Manufacturing, Nuclear Materials |