About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
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Mechanical Response of Materials Investigated through Novel In-situ Experiments and Modeling
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Presentation Title |
A Study on Slip Band Evolution and Its Relationship with Local Dislocation Glide Resistance in Polycrystalline Materials |
Author(s) |
Chamara Herath, Hubert Bilan, Kavindu Wijesinghe, Janith Wanni, Ajit Achuthan |
On-Site Speaker (Planned) |
Chamara Herath |
Abstract Scope |
Recent studies have shown that the characteristics of slip band evolution at the microscopic length scale vary with the local barrier effects introduced by microstructural feature boundaries. This indicates that the local resistance to dislocation gliding can be determined through characteristics of slip band evolution. In this study, we investigate the relationship between slip band characteristics and local resistance to dislocation gliding with the aid of in-situ and ex-situ microtensile testing. Characteristics such as the width of the slip bands, their spacing, and depth are correlated with respect to the local crystallographic orientation and the feature boundary influences. The insights gained are used to develop a microstructure-informed crystal plasticity finite element model that has the ability to predict slip band evolution accurately. The research findings will enhance the fundamental understanding of strain localization in AM metals, enabling the optimization of materials and structures for improved mechanical properties and structural reliability. |
Proceedings Inclusion? |
Planned: |
Keywords |
Characterization, Mechanical Properties, Modeling and Simulation |