About this Abstract |
| Meeting |
2027 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing for Energy Industry
|
| Presentation Title |
High-temperature creep performance of twin engineered 316L stainless steel made by laser powder bed fusion additive manufacturing |
| Author(s) |
Chenglu Tang, Xiaoyuan Lou |
| On-Site Speaker (Planned) |
Chenglu Tang |
| Abstract Scope |
Σ3 twin boundaries are known to form stable grain-boundary networks that effectively suppress cavity nucleation, crack propagation, and carbide precipitation. However, such boundaries are rarely observed in as-built additively manufactured (AM) 316L stainless steel (SS). Here, solid state phase-transformation engineering enabled by control of the solidification process produced an as-built microstructure with a twin fraction of ~35%. Subsequent post-AM annealing resulted in a fully recrystallized microstructure with a twin fraction exceeding 75%, comparable to the highest values achieved through conventional grain-boundary engineering (GBE) of wrought 316L SS. This study reports, for the first time, the high-temperature creep response of grain-boundary-engineered 316L SS produced by laser powder bed fusion. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Iron and Steel, Mechanical Properties |