Effects of the filling process on the evolution of the mushy zone and macrosegregation in alloy casting

Yadav, Anil and Pathak, Nitin and Kumar, Arvind and Dutta, Pradip and Sarkar, Supriya (2009) Effects of the filling process on the evolution of the mushy zone and macrosegregation in alloy casting. In: Modelling and Simulation in Materials Science and Engineering, 17 (3). pp. 1-19.

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Abstract

A numerical model of the entire casting process starting from the mould filling stage to complete solidification is presented. The model takes into consideration any phase change taking place during the filling process. A volume of fluid method is used for tracking the metal–air interface during filling and an enthalpy based macro-scale solidification model is used for the phase change process. The model is demonstrated for the case of filling and solidification of Pb–15 wt%Sn alloy in a side-cooled two-dimensional rectangular cavity, and the resulting evolution of a mushy region and macrosegregation are studied. The effects of process parameters related to filling, namely degree of melt superheat and filling velocity on macrosegregation in the cavity, are also investigated. Results show significant differences in the progress of the mushy zone and macrosegregation pattern between this analysis and conventional analysis without the filling effect.

Item Type:	Journal Article
Publication:	Modelling and Simulation in Materials Science and Engineering
Publisher:	Institute of Physics
Additional Information:	Copyright of this article belongs to Institute of Physics.
Department/Centre:	Division of Mechanical Sciences > Mechanical Engineering
Date Deposited:	02 Jun 2009 10:58
Last Modified:	15 Jan 2013 06:27
URI:	http://eprints.iisc.ac.in/id/eprint/19795

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