Ponencia
High temperature behavior of nanostructured Al powders obtained by mechanical alloying under NH3 flow
Autor/es | Caballero Sánchez, Eduardo
Cintas Físico, Jesús Gómez Cuevas, Francisco de Paula Montes Martos, Juan Manuel Herrera García, Marta |
Departamento | Universidad de Sevilla. Departamento de Ingeniería y Ciencia de los Materiales y del Transporte |
Fecha de publicación | 2015-03 |
Fecha de depósito | 2021-03-23 |
Publicado en |
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ISBN/ISSN | 9780735412958 0094-243X |
Resumen | Aluminium powder was mechanically alloyed under ammonia gas flow for different
times (1-5 h) in order to produce a second-phase reinforcement, mainly by aluminium nitride
(AlN). After milling, powders were consolidated ... Aluminium powder was mechanically alloyed under ammonia gas flow for different times (1-5 h) in order to produce a second-phase reinforcement, mainly by aluminium nitride (AlN). After milling, powders were consolidated by cold uniaxial pressing and vacuum sintering. A small amount of copper powder was added to the Al milled powder to improve its sintering behavior. Hardness and indirect tensile test were carried out at room and high temperature to evaluate the mechanical properties evolution. Results showed an remarkable hardness increase with the second phases content, even at high temperature (up to 229 HB at 400 ºC). However, the high content of second phases of ceramic nature decreases the ductility, resulting in low values of tensile strength (lower than 160 MPa). |
Cita | Caballero Sánchez, E., Cintas Físico, J., Gómez Cuevas, F.d.P., Montes Martos, J.M. y Herrera García, M. (2015). High temperature behavior of nanostructured Al powders obtained by mechanical alloying under NH3 flow. En 4th International Congress in Advances in Applied Physics and Materials Science, APMAS 2014 Fethiye, Turkey: American Institute of Physics Inc.. |
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