|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Computational Design and Simulation of Materials (CDSM 2018): Meso/Macroscale Simulations
||Phase Field Simulations of Grain Boundary Variant Selection and Intragranular Microstructure Formation in Polycrystalline Ti-6Al-4V
||Bala Radhakrishnan, Sarma Gorti, John Turner
|On-Site Speaker (Planned)
We present large scale phase field simulations of beta to alpha transformation in Ti-6Al-4V using high performance computing. A novel nucleation technique is employed that allows variant selection from the possible 12 variants of alpha from beta due to the presence of elastic strain fields in the beta grains at pre-existing intra-granular alpha as well as grain boundary alpha. The alpha variant selection within the beta grain boundary will also be explicitly modeled using the composite nucleation technique, that allows us to simulate the influence of the grain boundary alpha on the structure evolution inside the beta grains. The simulations will be used to predict the influence of nucleation rate on the transformed microstructure in the diffusional beta to alpha transformation regime. Research supported by the Exascale Computing Project at the Oak Ridge National Laboratory managed by UT-Battelle, LLC, under contract DE-AC05-00OR22725 for the U.S. Department of Energy.
||Planned: Supplemental Proceedings volume