About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
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Symposium
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Mechanical Response of Materials Investigated through Novel In-situ Experiments and Modeling
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Presentation Title |
Quantifying Microscopic Strain Localization Behavior of Ferrite-martensite Dual Phase Microstructures with Correlative Characterization Techniques |
Author(s) |
Soudip Basu, Balila Nagamani Jaya, Harita Seekala, Sudarshan Phani, Anirban Patra, Sarbari Ganguly, Monojit Dutta, Indradev Samajdar |
On-Site Speaker (Planned) |
Balila Nagamani Jaya |
Abstract Scope |
The microscopic strain localization behavior of metallic materials is closely linked to the resulting macroscopic mechanical properties of the material. Hence, quantification of these localizations at the microstructure length scale is necessary to affect improvement in mechanical properties. Dual phase steel microstructures show complex strain localization patterns that are affected by microstructural parameters like martensite volume fraction, phase hardness differential, carbon content and grain size. In the present work, we have used advanced correlative characterization techniques like microscopic digital image correlation, high speed nanoindentation based property mapping, electron backscattered diffraction based geometrically necessary dislocation density mapping and J2 plasticity modelling to measure microscopic strain localizations in a ferrite-martensite (~10 vol%) dual phase steel under uniaxial tensile deformation. Further, the changing nature of these localizations brought about by a change in phase hardness differential is also quantified. The methodology used can be extended to other complicated microstructures. |
Proceedings Inclusion? |
Planned: |
Keywords |
Characterization, Mechanical Properties, Other |