| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Fatigue in Materials: Fundamentals, Multiscale Characterizations and Computational Modeling
|
| Presentation Title |
Strain Localisation in Engineering Alloys – Quantifying Discrete Shear to Improve Understanding of Plasticity and Crack Initiation |
| Author(s) |
Michael Preuss |
| On-Site Speaker (Planned) |
Michael Preuss |
| Abstract Scope |
Plastic deformation in alloys is typically highly localised creating stress concentrations at the microstructural scale that can lead to premature failure. The discrete shear develops into heterogeneous strain patterns, which might depend on microstructural parameters, and which will affect strain hardening and crack initiation.
Recent advancements in imaging nano-patterned mechanical test samples in a SEM for high resolution digital image correlation (HRDIC) has opened new possibilities of understanding the impact of alloy chemistry and microstructures on the degree of strain localisation that develops during monotonic or cyclic loading. I will present examples of utilising HRDIC to quantify the effect of alloy chemistry and microstructures on the degree of strain localisation that raises interesting questions related to for example solid solution strengthening. I will also provide an outlook of the direction of travel with the development of fully integrated in-situ SEM systems enabling the automation of the complex imaging/loading procedures. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Mechanical Properties, Characterization, Other |