About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
|
Additive Manufacturing: Materials Design and Alloy Development VI – Closed-Loop Alloy Design
|
Presentation Title |
Grand Alloying: Enabling Multi-phase Co-existence in Additive Manufactured Titanium Alloys |
Author(s) |
Jenniffer Bustillos, Akane Wakai, Kaushalendra Singh, Atieh Moridi |
On-Site Speaker (Planned) |
Jenniffer Bustillos |
Abstract Scope |
Beam-based additive manufacturing (AM) has shown promise in enhancing the strength of Titanium alloys through the formation of fine microstructures. However, this improvement comes at the expense of reduced work hardening and ductility. To overcome these limitations, we introduce the concept of "grand alloying," involving the combination of multiple commercial alloys during the AM process. This approach aims to circumvent incompatibility in multi-alloy structures by achieving a random or site-specific distribution of multiple phases. Through the integration of operando high energy x-ray diffraction during laser-based Direct Energy Deposition (L-DED) of a binary grand alloy, and comprehensive microstructural investigations at multiple length-scales, we identify key factors such as: high cooling rates, localized diffusion, and laser-induced convective forces, that play a crucial role in achieving phase co-existence. This work sheds light on the role of dynamic phase evolution and microstructure to advance the design of alloys for AM through innovative techniques. |
Proceedings Inclusion? |
Planned: |