|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Advanced Characterization Techniques for Quantifying and Modeling Deformation Mechanisms
||A Correlation between Digital Image Correlation and Grain Misorientation Distribution Mapping to Capture the Localized Plastic Deformation in a Polycrystalline Titanium Alloy
||Vahid Khademi, Carl J. Boehlert, Thomas R. Bieler, Masahiko Ikeda, Samantha Daly, Zhe Chen
|On-Site Speaker (Planned)
It is well known that the elastic and plastic response of polycrystalline titanium alloys to applied load is heterogeneous at the microscale. Understanding the details of heterogeneous plastic deformation is essential for identifying the failure mechanisms of a material. In this study, in-situ SEM tensile testing was performed in conjunction with Digital Image Correlation (DIC) strain mapping and electron backscatter diffraction (EBSD) on a solution treated rolled sheet of a beta Ti-13Cr-1Fe-3Al (wt.%) alloy. The sample was loaded up to ~10% plastic strain in nine steps. Four metrics were examined to generate misorientation distribution maps. The results indicated the best match between the DIC map and the misorientation distribution map were obtained when the chosen reference orientation was the average orientation of the undeformed parent grain. In most of the grains, a high local misorientation gradient was correlated with strain concentration in DIC maps.
||Planned: Supplemental Proceedings volume