Artículo
Creep behavior of TiCxN1-x-CoTi cermets synthesized by mechanically induced self-sustaining reaction
Autor/es | Morales Rodríguez, Ana
Gallardo López, Ángela María Domínguez Rodríguez, Arturo Córdoba Gallego, José Manuel Avilés Escaño, Miguel Ángel Gotor Martínez, Francisco José |
Departamento | Universidad de Sevilla. Departamento de Física de la Materia Condensada |
Fecha de publicación | 2011-03 |
Fecha de depósito | 2023-12-26 |
Publicado en |
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Resumen | The plastic flow of TiCxN1−x–CoTi cermets has been investigated by uniaxial compression tests carried out in argon atmosphere at temperatures
between 1100 and 1200 ◦C. Two different cermets, with 5 wt.% W or WC content ... The plastic flow of TiCxN1−x–CoTi cermets has been investigated by uniaxial compression tests carried out in argon atmosphere at temperatures between 1100 and 1200 ◦C. Two different cermets, with 5 wt.% W or WC content as sintering additives, have been explored to assess the influence of the sintering additives on creep. The microstructural observations of deformed samples and the mechanical results indicate that the hard phase (ceramic grains) controls the plastic deformation. The stress exponent changes from 1 to 2 with increasing strain rate, suggesting a transition in the deformation mechanism from diffusional creep to grain boundary sliding; both with similar activation energy values of about 400 kJ/mol. This value of activation energy agrees with C diffusion in the carbonitride grains as the strain rate controlling mechanism. |
Agencias financiadoras | Ministerio de Educación. España Junta de Andalucía |
Identificador del proyecto | MAT2006-03068
MAT2006-04911 EXC/2005/FQM-337 |
Cita | Morales Rodríguez, A., Gallardo López, Á.M., Domínguez Rodríguez, A., Córdoba Gallego, J.M., Avilés Escaño, M.Á. y Gotor Martínez, F.J. (2011). Creep behavior of TiCxN1-x-CoTi cermets synthesized by mechanically induced self-sustaining reaction. Journal of the European Ceramic Society, 31 (3), 299-302. https://doi.org/10.1016/j.jeurceramsoc.2010.10.007. |
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