About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Characterization Techniques for Quantifying and Modeling Deformation
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| Presentation Title |
Influence Of Multiaxial Deformation and Temperature on the Extent Of Strain-Induced Martensitic Transformations in Stainless Steels: Experiments and Crystal Plasticity Modeling |
| Author(s) |
Marko Knezevic |
| On-Site Speaker (Planned) |
Marko Knezevic |
| Abstract Scope |
An elasto-plastic self-consistent crystal plasticity model integrating a stress state-dependent martensitic transformations model and a hardening law based on the evolution of dislocation densities was used to model and interpret the deformation behavior of 316L/304L stainless steels. The steels were characterized and modeled under several strain-rates and temperatures in uniaxial and biaxial deformation conditions including simple tension, inflation/tension of microtubes, and biaxial tension. The model successfully predicted more martensite formation under biaxial tension than uniaxial tension, consistent with the experimental measurements. Favorable comparisons of the predictions and experimental measurements allowed us to rationalize the origins of the martensitic transformation trends with deformation in the steels. Although the uniaxial loading evolved crystallography of the structure to favor the martensitic transformation, the biaxial loading induced stress fields in the grains to cause large separations between partial dislocation giving rise to greater extents of the martensitic transformations in biaxial than uniaxial loadings. |
| Proceedings Inclusion? |
Planned: |