|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Coupling Experiments and Modeling to Understand Plasticity and Failure
||Facile Measurements of Elastic Constants for Coupling Experiments and Modeling to Understand Plasticity and Failure
||Xinpeng Du, Ji-Cheng Zhao
|On-Site Speaker (Planned)
Elastic constants are essential for coupling experiments and modeling to understand plasticity and failure, but they are not generally available for solid solutions, not to mention as a function of composition. Traditional method would require single crystals be made for several individual alloy compositions in order to obtain composition-dependent elastic constants, which makes the measurements very laborious. A new method was recently developed to extract elastic constants by coupling experiments and modeling to match the velocities of ultrafast laser induced surface acoustic waves along several crystallographic orientations on a polished surface of a polycrystalline sample. This method is applied to a Fe-Ni diffusion couple to obtain full-tensor elastic constants as a function of composition. Such measurement will provide much-needed full-tensor elastic constants as input to the models in the highly coupled experiments involving anisotropic single crystal properties of each grain.
||Planned: Supplemental Proceedings volume