| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Characterization Techniques for Quantifying and Modeling Deformation
|
| Presentation Title |
On the Correlation between Plastic Strain and Misorientation in Polycrystalline Body-centered-cubic Titanium Alloys: An Experimentally and Numerically Study |
| Author(s) |
Vahid Khademi, Thomas Bieler, Masahiko Ikeda, Carl J. Boehlert |
| On-Site Speaker (Planned) |
Carl J. Boehlert |
| Abstract Scope |
It is well-known that the level of geometrically necessary dislocations increase with an increase in plastic strain. Hence, it is expected that the level of crystallographic misorientation also increases with plastic strain, which has been observed in face centered cubic alloys. In this study, the correlation between misorientation and plastic strain was studied experimentally and numerically on two body centered cubic titanium alloys. Eleven room-temperature tensile experiments were performed inside a scanning electron microscope. The results, which included electron backscattered diffraction orientation maps performed at different plastic strains, revealed a linear correlation between misorientation and plastic strain, regardless of the reference orientations, as long as the plastic strain was uniformly distributed throughout the gage section, i.e., the necking did not occur in the sample. Furthermore, it was found that samples, which were incrementally loaded through different strain levels, experienced a higher level of misorientation compared with monotonically-tested samples. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Titanium, Characterization, Mechanical Properties |