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http://cimav.repositorioinstitucional.mx/jspui/handle/1004/1613| MICROSTRUCTURAL MODIFICATIONS ON 319 ALUMINUM ALLOY DUE TO CERIUM/LANTHANUM ADDITIONS | |
| ROBERTO MARTINEZ SANCHEZ JAVIER CAMARILLO CISNEROS | |
| Acceso Abierto | |
| Sin Derechos Reservados | |
| Aluminum alloy 319 | |
| Hardness and UTS measurements of commercial aluminum alloy 319 (AA319, Al-Cu-Si family) and Cerium/Lanthanum modified compositions were synthesized by casting process. The weight of Ce/La aggregates are in ranged from 0.25%/0.125% to 1%/0.5% wt. % Ce, respectively. For the as-cast stage, HR increased in all modified, while after solubilized and artificial-aging thermal treatments it was the UTS significantly enhanced, up to 20 MPa, both compared versus AA319 reference. Thermally treated samples and high temperature tests revealed superior UTS values to compositions containing Ce/La. The micrometric Ce/La precipitates interfere with fractures diffusion through the matrix, additionally due to their high thermal stability are not modified at the employed 250°C temperature. Rare earths additions allowed to increase the amount of Cu-θ' phase and reduced its dissolution rate at high temperatures. | |
| 2014 | |
| Memoria de congreso | |
| Inglés | |
| OTRAS | |
| Versión revisada | |
| submittedVersion - Versión revisada | |
| Aparece en las colecciones: | Artículos de Congresos |
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| IMRC XIII. Simposio NACE 6B.35.pdf | 1.06 MB | Adobe PDF | Visualizar/Abrir |