About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
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Symposium
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Neutron and X-ray Scattering in Materials Science
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Presentation Title |
Evaluation of Boron Carbide’s Full Elasticity Tensor via Thermal Diffuse X-ray Scattering |
Author(s) |
Arezoo Zare, B. Wehinger, A. Mirone, D.J. Magagnosc, M.R. He, M. Straker, M. Spencer, T.C. Hufnagel, K.T. Ramesh |
On-Site Speaker (Planned) |
Arezoo Zare |
Abstract Scope |
As an ultrahard and lightweight material with high Hugonoit elastic limit, boron carbide is a promising candidate for protective applications against impact conditions. Knowledge of the elasticity tensor is essential for describing elastic waves/sound velocities in boron carbide and is also an important input parameter for multi-scale models that describe the material’s performance in extreme dynamic environments. Because of the strong anisotropy in the elasticity of boron carbide, which originates from its rhombohedral crystal lattice with trigonal symmetry, it is crucial to obtain the full elasticity tensor without making simplifying assumptions about the crystal symmetry. In the present work, monochromatic x-rays are used to study the elastic anisotropy of B4.9C single crystals. Measurements of thermal diffuse scattering in the proximity of Bragg reflections are performed at two temperatures and a model-free data analysis approach is employed to evaluate the 6 elastic constants of boron carbide for the first time. |
Proceedings Inclusion? |
Planned: |
Keywords |
Ceramics, Characterization, Mechanical Properties |