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 |
Microscale Insight into the Effect of Twinning on Fracture in a Manganese Steel |
Author(s) |
Xinzhu Zheng, Ankit Srivastava |
On-Site Speaker (Planned) |
Xinzhu Zheng |
Abstract Scope |
Manganese rich austenitic twinning induced plasticity steels offer high strength and ductility. These steels exhibit extremely high strain hardening rate with an upward curvature in the stress – strain response. The high strain hardening rate in these materials is largely associated with the activation of twinning. In this work, we attempt to understand the effect of twinning on the fracture response of a manganese rich austenitic steel. To this end, in-situ tensile tests of smooth and notched sheet specimens of single and poly crystals of the steel of interest are carried out. The crystallographic orientations of the single crystal specimens are chosen to selectively activate single slip, multiple slip or twinning. Furthermore, our in-situ tests allow us to simultaneously capture macroscopic response, microstructure evolution and the distribution of microscale strains. This presentation will focus on the results correlating deformation mechanism, microscale deformation and the fracture response of the material. |
Proceedings Inclusion? |
Planned: |