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Mechanical behavior of aluminum matrix composite during extrusion in the semisolid state

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Abstract

Semisolid extrusion experiments have been carried out on SiC particle reinforced aluminum composite. Different die diameters and ram velocities have been used in order to obtain a range of extrusion conditions at a constant temperature of 580 °C. The experimental results were fitted to a multiple linear regression to obtain a constitutive equation describing the behavior of the material in these conditions. From the regression equation, it was possible to model the material by finite element analysis. The predicted values fo the extrusion force resulting from the numerical analysis are consistent with the experimental values for the different conditions. The flow of primary phase particles through the die observed on micrographs has been compared with the predicted pattern and shows good agreement. These results also justify the use of a frictional stress factor corresponding to a sticking condition at the interface between the billet and the die components.

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Author notes

  1. S. Laplante (Graduate Student, Research Engineer)

    Present address: the Département de Métallurgie et de Génie des Matériaux, Ecole Polytechnique, H3C 3A7, Montreal, PQ, Canada

Authors and Affiliations

  1. the Département de Métallurgie et de Génie des Matériaux, Ecole Polytechnique, H3C 3A7, Montreal, PQ, Canada

    S. Turenne & F. Ajersch (Professors)

  2. the Industrial Materials Institute, National Research Council of Canada, J4B GY4, Boucherville, PQ, Canada

    N. Legros (Research Associate)

  3. Alcan International Ltd., Centre de Recherche et de Développement, G7S 4K8, Jonquière, PQ, Canada

    S. Laplante (Graduate Student, Research Engineer)

Authors
  1. S. Turenne
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  2. F. Ajersch
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  3. N. Legros
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  4. S. Laplante
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Turenne, S., Ajersch, F., Legros, N. et al. Mechanical behavior of aluminum matrix composite during extrusion in the semisolid state. Metall Mater Trans A 30, 1137–1146 (1999). https://doi.org/10.1007/s11661-999-0165-y

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  • DOI: https://doi.org/10.1007/s11661-999-0165-y

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