About this Abstract |
Meeting |
2022 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 |
In Situ Observation of Room Temperature Crack-healing in an Atomically Layered Ternary Carbide |
Author(s) |
Hemant Rathod, Thierry Ouisse, Miladin Radovic, Ankit Srivastava |
On-Site Speaker (Planned) |
Ankit Srivastava |
Abstract Scope |
Ceramic materials provide outstanding chemical and structural stability at high temperatures and in hostile environments but are susceptible to catastrophic fracture that severely limits their applicability. Herein, via in situ scanning electron microscope indentation of carefully grown single crystals of a ternary carbide using an in-house designed and build fixture, we demonstrate an intriguing possibility of healing the cracks as they form, even at room temperature. Crystals of this class of ceramic materials readily fracture along weakly bonded crystallographic planes. However, our results show that onset of an abstruse mode of deformation referred to as kinking in these materials induces large crystallographic rotations and plastic deformation that physically heal the cracks. |
Proceedings Inclusion? |
Planned: |