About this Abstract |
Meeting |
2021 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 |
Microstructural Anisotropy and Its Influence on the Internal Stress Field within Grains: Experimental Confrontation with Full Field Crystal Plasticity Models |
Author(s) |
Kaustubh Venkatraman, Meriem Ben Haj Slama, Vincent Taupin, Nabila Maloufi, Stephane Berbenni, Anthony Andrew Rollett, Martin Diehl, Antoine Guitton |
On-Site Speaker (Planned) |
Kaustubh Venkatraman |
Abstract Scope |
Comprehensive micro-scale studies bring valuable information for extrapolating to the macroscopic mechanical response of materials and they can feed advanced multiscale crystal plasticity models. In this framework, macroscopic mechanical testing of bulk specimens has been successfully combined with a dislocation-scale characterization technique: Accurate Electron Channeling Contrast Imaging (A-ECCI). This study focusses on BCC Titanium where 48 slip systems are potentially active and pencil glide occurs and hence serves as a challenging benchmark for the proposed methodology. The full potentiality of A-ECCI for following the evolution of deformation microstructures will be highlighted. Micro-structural information available from ECCI has been used for examining the effect of anisotropic elastic and plastic properties on the local stress field and dislocation activity distribution within grains at different stages of deformation and gather statistical information for identifying relevant micromechanical and microstructural variables that influence the material behavior. |
Proceedings Inclusion? |
Planned: |