| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing of Large-scale Metallic Components
|
| Presentation Title |
Unique Aspects of Structure-Properties Relationships within Large-scale Structural Components of Fusion Additively Manufactured Stainless Steels |
| Author(s) |
Saket Thapliyal, Patxi Fernandez-Zelaia, Andres Marquez Rossy, Quinn Campbell, Michael M Kirka, Rangasayee Kannan, Andrzej Nycz, Anand Kulkarni, Kyle Stoodt |
| On-Site Speaker (Planned) |
Saket Thapliyal |
| Abstract Scope |
Due to its large-scale manufacturing capabilities, the multiphysics involved in wire arc additive manufacturing (WAAM) differs from the multiphysics in its laser-based fusion additive manufacturing counterparts. Subsequently, the resulting chemistry-processing-structure-properties relationships evolve differently in WAAM. To this end, the solidification behavior, microstructural and mechanical behavior of WAAM-processed stainless steels is investigated with examples of 17-4 precipitation hardenable (PH) and stainless steel 316L. Correlations between process thermokinetics, segregation behaviors of alloying elements, phase stability, microstructural hierarchy, and mechanical behavior are established. Furthermore, the effect of heat treatment on phase stability, precipitation hardening and resulting mechanical behavior is discussed. Implications of microstructural metastability for room and elevated temperature mechanical behavior are also highlighted. Microstructural attributes like sharp crystallographic texture is compelling for several structural applications. Insights on evolution of a few such microstructural attributes in WAAM processed stainless steels are provided. This work opens the pathway for microstructural design and application-specific manufacture of large-scale structural components of stainless steels with WAAM. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Iron and Steel, Mechanical Properties |