About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
|
Mechanical Behavior at the Nanoscale VII
|
Presentation Title |
Hyper-Elastic Deformation via Martensitic Phase Transformation in CdTe |
Author(s) |
Qi An, Kun Luo, Lin Li, Feng Yan, Yufeng Zheng |
On-Site Speaker (Planned) |
Qi An |
Abstract Scope |
Cadmium telluride (CdTe), a photovoltaic and photodetector material, requires a nuanced understanding of its atomic-level deformation mechanism for efficient flexible device design. We employed molecular dynamics and in-situ micropillar compression experiments to investigate the uniaxial compression deformation of CdTe monocrystals across varied crystal orientations. The study revealed that bulk CdTe deformation is primarily driven by reversible martensitic phase transformation, whereas CdTe pillar deformation relies on dislocation nucleation and movement, corroborating micropillar experimental data. Moreover, CdTe monocrystals exhibited superior super-recoverable deformation ability along the <100> orientation due to the hyper-elastic process induced by martensitic transformation. Our findings shed light on the deformation mechanisms of CdTe and similar II-VI compounds, potentially aiding in the optimal design of flexible devices. |
Proceedings Inclusion? |
Planned: |
Keywords |
Mechanical Properties, Modeling and Simulation, Phase Transformations |