| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing of Refractory Metallic Materials
|
| Presentation Title |
High-Throughput Refractory Alloy Design for Additive Manufacturing |
| Author(s) |
Kaitlyn M. Mullin, Ella Allgor, Collin Holgate, Gareth Seward, Noah Philips, Matthew Begley, Tresa Pollock |
| On-Site Speaker (Planned) |
Kaitlyn M. Mullin |
| Abstract Scope |
Despite recent advances in additive manufacturing (AM), only a limited number of existing refractory alloys can survive the printing process without crack defects. Refractory alloy design strategies to mitigate cracking under AM and welding conditions are needed. This talk introduces two high-throughput approaches to develop guidelines for mitigating solid-state and solidification cracking in AM processes. Computational analysis of melt pool crack-driving forces across various alloys identifies critical flaw sizes and establishes a material property-based metric for crack susceptibility upon cooling. Additionally, a high-throughput experimental method is developed to evaluate solidification cracking in binary and ternary alloys of a model Nb-W-Zr system. Results highlight strategies to reduce solidification defects from Zr additions and mitigate embrittlement from W additions. The findings emphasize alloy design principles for overcoming cracking during AM and bridging gaps between computational predictions and experimental outcomes. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, High-Temperature Materials, Solidification |