|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||GAT-2017 (Gamma Alloys Technology - 2017)
||Phase Field Simulation of Microstructure Evolution in TiAl
||Dongsheng Xu, Chunyu Teng, Jinhu Zhang, Yunzhi Wang, Rui Yang
|On-Site Speaker (Planned)
The properties of TiAl alloys depend strongly on their unique lamellar microstructures, with fully lamellae having the best combination of mechanical properties. However, the long term stability of the lamellar structure during service at elevated temperatures is a concern due to the high density of interfaces. In this study phase field simulations are carried out to study the effects of several processing and materials parameters, undercooling / supersaturation, external load, lattice mismatch and interfacial energy. The effects of these parameters on nucleation and variant selection of γ phase, in particular, the effect of the external load on lamellar thickness and interface type distribution are discussed. The simulation results may shed some light on microstructure optimization in TiAl alloys.
||Planned: Stand-alone book in which only your symposium’s papers would appear (indicate title in comments section below)