N. Ma, Center for Accelerated Maturation of Materials, Columbus, OH; Y. Wang, The Ohio State University, Columbus, OH
Microstructural evolution in commercial titanium alloys is extremely complex. In this presentation we discuss our recent efforts in integrating thermodynamic modeling and phase field simulation to develop computational tools for quantitative prediction of spatiotemporal evolution of microstructures during thermal processing for two alloy systems: Ti64 and Ti6242. The models account explicitly for precipitate morphology, spatial arrangement and anisotropy. The models developed were validated against experimental observations with microstructural features quantified by a set of rigorous procedures based on stereology. The development of multi-component titanium alloy diffusivity database and integration of phase field model with Pandat, a computer software program for thermodynamic calculations, will be emphasized.
Summary: Microstructural evolution in commercial titanium alloys is extremely complex. In this presentation we discuss our recent efforts in integrating thermodynamic modeling and phase field simulation to develop computational tools for quantitative prediction of spatiotemporal evolution of microstructures during thermal processing for two alloy systems: Ti64 and Ti6242. The models account explicitly for precipitate morphology, spatial arrangement and anisotropy. The models developed were validated against experimental observations with microstructural features quantified by a set of rigorous procedures based on stereology. The development of multi-component titanium alloy diffusivity database and integration of phase field model with Pandat, a computer software program for thermodynamic calculations, will be emphasized.
