| About this Abstract |
| Meeting |
6th World Congress on Integrated Computational Materials Engineering (ICME 2022)
|
| Symposium
|
6th World Congress on Integrated Computational Materials Engineering (ICME 2022)
|
| Presentation Title |
Multiscale Model for Colony Breakdown Prediction in Two-Phase Titanium Alloys |
| Author(s) |
Benjamin A. Begley, Victoria Miller |
| On-Site Speaker (Planned) |
Benjamin A. Begley |
| Abstract Scope |
For two-phase titanium alloys, predicting the evolution of texture—both local and global—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. Physical experiments with matched DEFORM simulations are used to validate the link and inform parameterization of the VPSC model. Additional model development includes the integration of non-equilibrium phase fraction calculations, rules for the selection of new α variants during phase transformations, and temperature-dependent critical resolved shear stress ratios. The new framework is then used 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? |
Definite: Other |