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http://cimav.repositorioinstitucional.mx/jspui/handle/1004/1254| Effect on Microstructure and Hardness of A2024 Aluminum Alloy Doped Cerium Oxide Nanoparticle. | |
| FRANCISCO JAVIER BALDENEBRO LOPEZ JESUS ADRIAN BALDENEBRO LOPEZ AUDEL SANTOS BELTRAN VERONICA GALLEGOS OROZCO CYNTHIA DEISY GOMEZ ESPARZA | |
| Acceso Abierto | |
| Sin Derechos Reservados | |
| microstructure | |
| Aluminum alloys possess interesting properties that attract much attention due to their light weight, high specific mechanical resistance, high thermal conductivity, and moderate casting temperature. Automotive and aircraft parts of aluminum alloys such as A2024 are reinforced with oxides for its superior properties such as refractoriness, high hardness, high compressive strength, wear resistance etc., and make them suitable for use as reinforcement material in metallic matrices. Incorporating ultra-fine particles of metal-oxides significantly improves mechanical properties of the metal matrix by reducing the inter-particle spacing and providing their inherent properties to the metal matrix since they get uniformly embedded into it. In aluminum alloys a hardening mechanism is promoted by the homogeneous dispersion of low solubility or total insolubility particles. Several kinds of ceramic materials, e.g. SiC, Al2O3, MgO and B4C, are extensively used to reinforce aluminum and its alloys [1]. On the other hand, rare-earth compounds have been used mainly as corrosion inhibitors for aluminum alloys. Several studies have been realized in terms of cerium oxide protective coatings to improve the corrosion resistance of the A2024 alloy. The contribution of cerium oxides in the particle-dispersion hardening has not been explored in the aluminum alloys; nevertheless the increase of hardness and wear resistance of Sn by the incorporation of CeO2 nanopowders was reported [2]. On the basis of this report and the knowledge about the capability of aluminum alloys to be hardened by particle-dispersion, the aim of this work is focused on the potential effect of cerium oxide nanoparticles (nanoceria) on the strengthening of the A2024 alloy synthesized by two routes: casting and mechanical milling followed by sintering. Microstructural and hardness analyses (in samples with and without cerium oxide additions) were conducted in order to determine the combined effect of nanoceria and processing route on hardness behavior of A2024 alloy. | |
| 2015 | |
| Memoria de congreso | |
| Inglés | |
| OTRAS | |
| Versión revisada | |
| submittedVersion - Versión revisada | |
| Aparece en las colecciones: | Artículos de Congresos |
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