Phase Field Simulation of Equiaxed Microstructure Formation during Semi-solid Processing of A380 Al Alloy

Das, Prosenjit and Samanta, Sudip Kumar and Kumar, Pramod and Dutta, Pradip (2014) Phase Field Simulation of Equiaxed Microstructure Formation during Semi-solid Processing of A380 Al Alloy. In: ISIJ INTERNATIONAL, 54 (7). pp. 1601-1610.

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Abstract

A phase field modelling approach is implemented in the present study towards simulation of microstructure evolution during cooling slope semi solid slurry generation process of A380 Aluminium alloy. First, experiments are performed to evaluate the number of seeds required within the simulation domain to simulate near spherical microstructure formation, occurs during cooling slope processing of the melt. Subsequently, microstructure evolution is studied employing a phase field method. Simulations are performed to understand the effect of cooling rate on the slurry microstructure. Encouraging results are obtained from the simulation studies which are validated by experimental observations. The results obtained from mesoscopic phase field simulations are grain size, grain density, degree of sphericity of the evolving primary Al phase and the amount of solid fraction present within the slurry at different time frames. Effect of grain refinement also has been studied with an aim of improving the slurry microstructure further. Insight into the process has been obtained from the numerical findings, which are found to be useful for process control.

Item Type:	Journal Article
Publication:	ISIJ INTERNATIONAL
Additional Information:	Copy right for this article belongs to the IRON STEEL INST JAPAN KEIDANREN KAIKAN, TEKKO KAIKAN-5F, 3-2-10, NIHONBASHI-KAYABACHO, TOKYO, CHUO-KU 103-0025, JAPAN
Department/Centre:	Division of Mechanical Sciences > Mechanical Engineering
Date Deposited:	27 Aug 2014 10:09
Last Modified:	27 Aug 2014 10:09
URI:	http://eprints.iisc.ac.in/id/eprint/49703

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