Elastic-Stiffness Coefficients of Titanium Diboride

Using resonance ultrasound spectroscopy, we measured the monocrystal elastic-stiffness coefficients, the Voigt C(ij), of TiB(2). With hexagonal symmetry, TiB(2) exhibits five independent C(ij): C(11), C(33), C(44), C(12), C(13). Using Voigt-Reuss-Hill averaging, we converted these monocrystal values...

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Detalles Bibliográficos
Autores principales: Ledbetter, Hassel, Tanaka, Takaho
Formato: Online Artículo Texto
Lenguaje:English
Publicado: [Gaithersburg, MD] : U.S. Dept. of Commerce, National Institute of Standards and Technology 2009
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4646529/
https://www.ncbi.nlm.nih.gov/pubmed/27504232
http://dx.doi.org/10.6028/jres.114.024
Descripción
Sumario:Using resonance ultrasound spectroscopy, we measured the monocrystal elastic-stiffness coefficients, the Voigt C(ij), of TiB(2). With hexagonal symmetry, TiB(2) exhibits five independent C(ij): C(11), C(33), C(44), C(12), C(13). Using Voigt-Reuss-Hill averaging, we converted these monocrystal values to quasiisotropic (polycrystal) elastic stiffnesses. Briefly, we comment on effects of voids. From the C(ij), we calculated the Debye characteristic temperature, the Grüneisen parameter, and various sound velocities. Our study resolves the enormous differences between two previous reports of TiB(2)’s C(ij).

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