Effect of Equal Channel Angular Pressing (ECAP) on microstructure and properties of Al-FeAlCr intermetallic phase composites

Effect of Equal Channel Angular Pressing (ECAP) on microstructure and properties of Al-FeAlCr intermetallic phase composites

Autor Cardoso, Kátia Regina Autor UNIFESP Google Scholar
Muñoz-Morris, Maria A. Google Scholar
Lieblich, Marcela Google Scholar
Morris, David Google Scholar
Instituição Universidade Federal de São Paulo (UNIFESP)
Resumo An 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.
Palavra-chave ECAP
composite
aluminium
intermetallic
Idioma Inglês
Financiador Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Spanish Ministry of Education and Science
Número do financiamento FAPESP: 2012/ 07536-0
Spanish Ministry of Education and Science: MAT2009-07342
Data de publicação 2014-06-01
Publicado em Materials Research. ABM, ABC, ABPol, v. 17, n. 3, p. 775-780, 2014.
ISSN 1516-1439 (Sherpa/Romeo, fator de impacto)
Publicador ABM, ABC, ABPol
Extensão 775-780
Fonte http://dx.doi.org/10.1590/S1516-14392014005000029
Direito de acesso Acesso aberto Open Access
Tipo Artigo
Web of Science WOS:000338017600033
SciELO S1516-14392014000300033 (estatísticas na SciELO)
Endereço permanente http://repositorio.unifesp.br/handle/11600/8395

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