|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Advanced Characterization Techniques for Quantifying and Modeling Deformation
||Quantifying the Local and Global Misorientation Distributions as a Function of Crystallographic Orientation and Level of Plastic Strain in Polycrystalline Materials by Utilizing EBSD Mapping
||Vahid Khademi, Thomas R. Bieler, Carl J. Boehlert
|On-Site Speaker (Planned)
It is well known that the average global crystallographic misorientation usually increases by increasing the level of plastic strain due to increasing the density of dislocations. Additionally, the strain distribution is heterogeneous in most polycrystalline materials due to differences in the grain crystal orientation and the neighboring grain orientations.
A systematic method was implemented to quantify the local and global crystallographic misorientation distribution and its relationship to the degree of plastic strain. To assess this method, eight in-situ SEM tensile tests were conducted on Ti-13Cr-1Fe-3Al and TiMetal-21S which were stopped at approximately 3%, 6%, 9%, and 12% strain. The crystallographic orientations were collected by utilizing EBSD. The misorientation of each grain was calculated with respect to a reference orientation which minimized the average grain misorientation. Finally, the misorientation distributions were analyzed as a function of crystallographic directions to investigate the effect of the parent grain orientation at each level strain.
||Planned: EPD Congress Volume