| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Transformations and Microstructural Evolution
|
| Presentation Title |
Multiscale Model for Colony Breakdown Prediction in Two-phase Titanium Alloys |
| Author(s) |
Benjamin A. Begley, Victoria M. Miller |
| On-Site Speaker (Planned) |
Benjamin A. Begley |
| Abstract Scope |
For two-phase titanium alloys, predicting the evolution of texture during deformation processing is key to developing highly efficient strategies for colony and microtexture breakdown. This work develops a “open-box” framework linking DEFORM, a commercial finite element model for deformation processing, and the viscoplastic self-consistent (VPSC) model, which predicts texture evolution during plastic deformation. Matched sets of physical deformations and DEFORM simulations are used to validate the microstructure predictions and better parameterize the VPSC model. Additional model rules are integrated through a modular approach, including non-equilibrium phase transformation calculations, variant selection of transformed α grains, and temperature-dependent deformation properties. The new framework is coupled with modern electron microscopy to investigate the orientation dependence of colony breakdown during complex thermomechanical processes, with the goal of developing a simple parameter for predicting resulting microtexture severity as a function of the starting microstructure and the processing pathway. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Titanium, Modeling and Simulation, ICME |