| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanical Response of Materials Investigated through Novel In-situ Experiments and Modeling
|
| Presentation Title |
Quantifying Deformation Mechanics of High Temperature Alloys using In-situ and Digital Imaging Correlation (DIC) Testing Techniques |
| Author(s) |
James Parkin, Soran Birosca, Ross Buckingham |
| On-Site Speaker (Planned) |
James Parkin |
| Abstract Scope |
Strain accumulation from either monotonic or cyclic loadings can be heterogeneous in aerospace materials where deformation can become localised depending on microstructural features and processing parameters. The damage mechanisms are further reliant on deformation rates and temperatures. Thus, the characterisation and dynamic observation of strain localisation during deformation at both macro and micro scales is vital for understanding the fracture mechanics of the alloy. In the current study, two major microanalytical tools were utilised to investigate deformation mechanisms in Waspaloy; (1) in-situ mechanical testing in SEM to obtain EBSD crystallographic orientation information at the micro scale, in addition to reveal the changes in grain morphology, texture and misorientation during high temperature deformation. (2) Digital imaging correlation (DIC) during variant mechanical testing to provide a holistic visualisation of the deformation on a macro-scale with the aim of revealing areas of localised plastic strain heterogeneities as the test pieces approaches failure. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |