| About this Abstract |
| Meeting |
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
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| Symposium
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2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
| Presentation Title |
Solidification Behavior, Texture Evolution, and Mechanical Behavior of Large Scale Fusion Additively Manufactured Steels: Interplay Between Chemistry and Unique Processing Conditions |
| Author(s) |
Saket Thapliyal, Patxi Fernandez-Zelaia, Yousub Lee, Andrzej Nycz, Sarah Graham, Andres M. Rossy, Michael M. Kirka |
| On-Site Speaker (Planned) |
Saket Thapliyal |
| Abstract Scope |
The multiphysics in DED wire-arc additive manufacturing (WAAM) process can differ significantly from other powder-based fusion additive manufacturing processes. This engenders the need for investigating the chemistry-processing-structure-properties relationships for DED WAAM processed alloys. In this work, we investigate the effect of interplay between multiple physical phenomena on process thermokinetics, solidification behavior, solute segregation behavior, microstructural evolution and ensuing mechanical behavior of the DED WAAM processed stainless steels. Insights on factors determining a single crystal-like texture in DED WAAM processed austenitic steels are provided. The implications of spatially-varying thermokinetics for undercooling, solute segregation and phase transformation behavior in steels are also discussed. Furthermore, we discuss the effects of hierarchical deformation mechanisms in moderate stacking fault energy steels on room and high temperature mechanical behavior. This work is expected to improve the understanding of chemistry-processing-structure-properties relationships in DED WAAM processed stainless steels, and thus facilitate microstructure design of steels with DED WAAM. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |