About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing of Metals: Multiscale and Non-Equilibrium Solidification Fundamentals
|
| Presentation Title |
Composition-sensitive modeling of alpha-morphologies during solidification and heat treatment in PBF-LB Ti-6Al-4V |
| Author(s) |
Sierra R. Green, Hasan Al-Jame, Mohadeseh Taheri-Mousavi, Bryan Webler, Anthony Rollett |
| On-Site Speaker (Planned) |
Sierra R. Green |
| Abstract Scope |
Digital twins offer new pathways to qualification and certification of additively manufactured parts, which currently rely on substantial destructive material testing. However, in materials such as Ti-6Al-4V, commonly printed in the aerospace and biomedical fields, a reliable model of the microstructure is essential to predicting mechanical properties. This work models the alpha-morphology of Ti-6Al-4V printed via laser powder bed fusion and post-processed by annealing and/or hot isostatic pressing (HIP) treatments. To increase accuracy, a sensitivity study was conducted to determine the impact of impurities including Fe and O on key parameters such as the beta-transus temperature and vanadium diffusivity. Furthermore, martensite decomposition via diffusional transformation into equilibrium alpha-morphologies was modeled to simulate heat treatment and HIP processes. Simulations of the as-printed and heat-treated microstructures were validated via comparison with SEM and EBSD of as-printed, heat-treated and HIP’d tensile samples. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Titanium, Modeling and Simulation |