About this Abstract |
Meeting |
2023 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 |
On the Kink-band Formation in True and Brittle Micas |
Author(s) |
Hemant Rathod, Andreas K. Kronenberg, Miladin Radovic, Ankit Srivastava |
On-Site Speaker (Planned) |
Ankit Srivastava |
Abstract Scope |
Micas are ubiquitous in earths lithosphere and they greatly influence the overall crustal deformation. In the presence of high temperature, pressure and mineral rich fluids, the composition of mica can change overtime by the process known as isomorphic substitution. However, even after decades of thorough investigation of mechanical behavior of micas, the effect of isomorphic substitution on the formation of kink-bands in mica has remained unresolved. Herein, we analyze the formation of kink-band in a true and a brittle mica via novel in-situ SEM experiments. Our results show that mica with low T-O-T structure charge deforms readily by large layer rotations and extensive thin kink-band formation without any sign of transverse layer cracks, whereas mica with high T-O-T structure charge exhibits limited layer rotation, fewer kink-bands and extensive transverse layer cracking. The complete result of this investigation will be discussed in this presentation. |
Proceedings Inclusion? |
Planned: |