| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Ultrafine-grained and Heterostructured Materials (UFGH XIII)
|
| Presentation Title |
Temporary Alloying with Hydrogen to Create Hierarchical Microstructures in Titanium Alloys |
| Author(s) |
Brady G. Butler, Michael Taylor Hurst, Daniel O. Lewis, Matthew Dunstan, James D. Paramore |
| On-Site Speaker (Planned) |
Brady G. Butler |
| Abstract Scope |
Hydrogen embrittlement has long been recognized as a challenge in titanium alloys, where even moderate hydrogen concentrations can detrimentally affect ductility and fatigue performance. Conversely, the potential benefits of hydrogen at elevated temperatures have received less attention. This research explores the utilization of hydrogen as a temporary alloy addition in titanium alloys. As a beta-stabilizing element, hydrogen exhibits a profound influence on phase stability, creating avenues for the formation of unique heterostructures that cannot be achieved through conventional heat treatments alone. After undergoing phase transformation heat treatments, the temporary alloy additions of hydrogen can be effectively reduced to acceptable levels through a simple vacuum treatments at moderate temperatures. This research delves into the underlying mechanisms of transformation, and grain refinement, providing detailed insights for each process. Additionally, case studies are outlined, demonstrating the successful creation of fine, uniform microstructures with reduced texture in bulk titanium alloys fabricated via diverse conventional and additive manufacturing processes. |
| Proceedings Inclusion? |
Planned: |