|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Materials by Design: An MPMD Symposium Honoring Greg Olson on the Occasion of His 70th Birthday
||Creating Materials Databases Using X-Ray Tomography
||J. Zhang, S.O. Poulsen, J.W. Gibbs, Peter Voorhees, H.F. Poulsen
|On-Site Speaker (Planned)
The materials design process rests on a foundation of materials data. These data can be of many forms. For example, CALPHAD and density function theory methods are commonly employed to determine phase diagrams in the multicomponent alloys of engineering interest and the free energies needed for kinetic models. However, there are many parameters that are central to a design effort and are quite challenging to measure, such as liquid diffusivities and interfacial energies. We outline a method to determine materials parameters using X-ray tomography. The approach uses the microstructure measured at one time as an initial condition in a phase field simulation. Then by comparing the computed and measured microstructures at a later time, we show that it is possible to determine difficult-to-measure materials parameters, such as the solute diffusivity in a liquid metal. The generalization of this approach to other materials parameters will be discussed.
||Planned: Stand-alone book in which only your symposium’s papers would appear (indicate title in comments section below)