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Evolution of Microstructure During Solidification of an Aluminium Alloy Under Stirring

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Abstract

In the present work, the evolution of microstructure during solidification of A356 alloy under stirring is performed experimentally in a high temperature concentric viscometer. The stirring during solidification results a semisolid slurry in the annular space between the cylinders. This slurry is removed periodically during processing using a vacuum removal quartz tube and quenched in water for micrograph analysis. From the micrograph analysis, the shape, stacking arrangement and corresponding microstructural evolution of the suspended primary particles in the slurry are studied. The work also predicts the fraction of solid present in the extracted slurry. Finally, the effect of microstructure and the solid-fraction on the slurry viscosity is presented.

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Authors and Affiliations

  1. Department of Mechanical Engineering, Jadavpur University, Kolkata, 700032, India

    N. Barman

  2. Department of Mechanical Engineering, Indian Institute of Science, Bangalore, 560012, India

    P. Dutta

Authors
  1. N. Barman
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  2. P. Dutta
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Correspondence to N. Barman.

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Barman, N., Dutta, P. Evolution of Microstructure During Solidification of an Aluminium Alloy Under Stirring. Trans Indian Inst Met 65, 683–687 (2012). https://doi.org/10.1007/s12666-012-0192-z

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  • DOI: https://doi.org/10.1007/s12666-012-0192-z

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