| Revista: | Revista mexicana de física |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000454030 |
| ISSN: | 0035-001X |
| Autores: | Camarillo Cisneros, J1 Pérez Bustamante, R2 Martínez Sánchez, R3 |
| Instituciones: | 1Universidad Autónoma de Chihuahua, Facultad de Medicina y Ciencias Biomédicas, Chihuahua. México 2Corporación Mexicana de Investigación en Materiales S.A. de C.V., San Luis, San Luis. México 3Centro de Investigación en Materiales Avanzados, Chihuahua. México |
| Año: | 2020 |
| Periodo: | Nov-Dic |
| Volumen: | 66 |
| Número: | 6 |
| Paginación: | 782-789 |
| País: | México |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Analítico, teórico |
| Resumen en inglés | Microstructural and mechanical effects were studied on automotive-grade 319 aluminum alloy after cerium/lanthanum rare earth additions at room and hot working conditions. Cerium/lanthanum additions formed micrometric phases in AA319, which were stable under room and hot working conditions. In comparison with reference alloy, Ce/La doped alloys reduced the eutectic-Si up to 85%. The effect of the Ce/La addition produced an increase in hardness and UTS under room temperature while improved mechanical performance in high-temperature working conditions. These improvements were attained to the presence of well-dispersed Ce/La micrometric needles, and the amount increase of θ’-phase (Al2Cu) across the aluminum fmatrix. The θ’ interfered directly with crack diffusion in the solid in two crystallographic directions. Additionally, it was observed through transmission electron microscopy, that Ce/La presence altered the precipitation kinetics in the formation of the coherent θ from the θ´ |
| Disciplinas: | Física y astronomía |
| Palabras clave: | Fisicoquímica y química teórica, Aleaciones, Cerio, Lantano, Aluminio, Termomecánica |
| Keyword: | Physics, Alloys, Cerium, Lanthanum, Aluminum, Thermomechanics |
| Texto completo: | Texto completo (Ver HTML) Texto completo (Ver PDF) |
