| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Practical Tools for Integration and Analysis in Materials Engineering
|
| Presentation Title |
An Automated Procedure for Reconstructing Deformation Twin Hierarchies in Heavily Twinned Microstructures Implemented Using MTEX |
| Author(s) |
Daniel Savage, Rodney J McCabe, Marko Knezevic |
| On-Site Speaker (Planned) |
Daniel Savage |
| Abstract Scope |
Approaches for automated reconstruction of deformation twin hierarchies from orientation raster maps have historically not performed well for highly twinned microstructures due to: 1) mischaracterized orientation relationships that arise from reorientation by slip or high levels of segmentation, 2) misidentification of non-twinned grain fragments when most or all of an initial grain is twinned, and 3) nonflexible selection of the twin hierarchy when multiple generations exist. In this work, a general twin analysis code is implemented using MTEX and the MATLAB graph toolbox to address each issue. Highlights of the novel algorithms developed include grouping methodologies that mitigate slip artifacts and problematic twin relationships, incorporation of texture in determining non-twin grain fragments, and a minimum spanning tree approach to determining twin hierarchies. To demonstrate the utility of the algorithms, highly twinned α-Ti is investigated and the level of automation is demonstrated to largely improve over approaches in literature. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Titanium, Characterization, Other |