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Effect of equal channel angular pressing (ECAP) on microstructure and properties of Al-FeAlCr intermetallic phase composites

AutorCardoso, K. R.; Muñoz-Morris, Mª Antonia; Lieblich, Marcela ; Morris, David G.
Fecha de publicación2014
EditorUniversidade Federal de São Carlos
CitaciónMaterials Research 17 (3): 775-780 (2014)
ResumenAn aluminium matrix composite was prepared by mixing commercial aluminium powders and 15 vol % of FeAlCr powders and consolidation by hot extrusion. The extruded composite was subjected to severe plastic deformation by equal channel angular pressing (ECAP) at room temperature and at 150°C. The extruded composite presents a uniform distribution of particles although some defects are observed such as residual pores and particle agglomerates. The particle distribution does not show a significant change due to ECAP. The extruded composite exhibits a relatively fine grain size of the order of 1-2 μm that was refined to 550 nm after three ECAP passes at room temperature by route A and to 636 nm after four passes at 150°C by route Bc. The yield stress of the composites was increased by 140 to 180% after ECAP as compared with the extruded condition.
URIhttp://hdl.handle.net/10261/111793
DOI10.1590/S1516-14392014005000029
Identificadoresdoi: 10.1590/S1516-14392014005000029
issn: 1516-1439
Aparece en las colecciones: (CENIM) Artículos
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