| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Deformation and Transitions at Grain Boundaries VII
|
| Presentation Title |
Strain Localization and Martensitic Transformations at Shear Bands in a Low Stacking Fault Energy Austenitic Stainless Steel |
| Author(s) |
Douglas L. Medlin, J. Sabisch, C. San Marchi, J. Ronevich |
| On-Site Speaker (Planned) |
Douglas L. Medlin |
| Abstract Scope |
Deformation bands in austenitic stainless steels are often dominated by planar dislocation slip, but can also be tied to shear-coupled crystallographic transformations including twinning and the formation of ε-martensite. The interplay between strain and atomic shuffling in these bands can also drive further processes, such as the nucleation and growth of the α'-martensite phase at deformation band intersections. Here, we discuss electron microscopic observations of such bands and their relationship to grain boundaries and dislocation cell-walls in a low SFE austenitic stainless steel (304L), with and without hydrogen charging. Diffraction contrast STEM, nano-beam diffraction, and atomic-resolution observations provide fundamental insight concerning the elementary processes governing the nanoscale evolution of these structures.
Sandia National Laboratories is a multimission laboratory managed and operated by National Technology and Engineering Solutions of Sandia, LLC., a wholly owned subsidiary of Honeywell International, Inc., for the USDOE’s NNSA under contract DE-NA-0003525. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |