Morphological evolution of al-2wt%si-2.5wt%cu alloy produced by ems and ems enhanced by ECAP
Luis Vanderlei Torres, Davi Munhoz Benati, Eugênio José Zoqui
ARTIGO
Inglês
Agradecimentos: The authors acknowledge the Brazilian research funding agencies FAPESP (São Paulo Research Foundation – Projects 2009/08478-1 and 2011/19997-0), CNPq (National Council for Scientific and Technological Development – Project 470572-2011-6) and CAPES (Federal Agency for the Support and...
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Agradecimentos: The authors acknowledge the Brazilian research funding agencies FAPESP (São Paulo Research Foundation – Projects 2009/08478-1 and 2011/19997-0), CNPq (National Council for Scientific and Technological Development – Project 470572-2011-6) and CAPES (Federal Agency for the Support and Evaluation of Postgraduate Education) for their financial support of this work
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This work evaluates the morphological evolution at the semisolid state of the Al-2wt%Si-2.5wt%Cu alloy produced by direct chill casting under electromagnetic stirring (EMS) and this same raw material enhanced by one equal channel angular pressing pass (ECAP), specially designed to produce raw...
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This work evaluates the morphological evolution at the semisolid state of the Al-2wt%Si-2.5wt%Cu alloy produced by direct chill casting under electromagnetic stirring (EMS) and this same raw material enhanced by one equal channel angular pressing pass (ECAP), specially designed to produce raw material for thixoforming processes. The traditional EMS production method is compared to ECAP in order to determine if a second procedure is necessary for this particular alloy. The ECAP process emerged as a promising technique capable of imposing severe homogeneous deformation in metals, which could improve thixoforming processes. The ECAP deformation occurs in a matrix that contains two channels of the same cross-sectional area and form an angle of Φ = 90° and Φ = 120°, the process can be repeated many times allowing to control the microstructure and properties of the materials. Both raw materials, EMS and EMS + ECAP were submitted to re-heating treatment in two conditions of solid fractions, 45% and 60% at soaking times of 0s, 30s and 90s. With this procedure primary particle sizes of about 60 μm were obtained, which exhibit favourable characteristics for the thixoforming process
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CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO - CNPQ
470572-2011-6
COORDENAÇÃO DE APERFEIÇOAMENTO DE PESSOAL DE NÍVEL SUPERIOR - CAPES
FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO - FAPESP
2009/08478-1; 2011/19997-0
Fechado
Morphological evolution of al-2wt%si-2.5wt%cu alloy produced by ems and ems enhanced by ECAP
Luis Vanderlei Torres, Davi Munhoz Benati, Eugênio José Zoqui
Morphological evolution of al-2wt%si-2.5wt%cu alloy produced by ems and ems enhanced by ECAP
Luis Vanderlei Torres, Davi Munhoz Benati, Eugênio José Zoqui
Fontes
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Solid state phenomena Vol. 217-218 (Sept., 2014), p. 105-110 |