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Microstructural Evolution of A356 Al Alloy During Flow Along a Cooling Slope

Das, Prosenjit and Samanta, Sudip K and Venkatpathi, BRK and Chattopadhyay, Himadri and Dutta, Pradip (2012) Microstructural Evolution of A356 Al Alloy During Flow Along a Cooling Slope. In: TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS, 65 (6, SI). pp. 669-672.

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Official URL: http://dx.doi.org/10.1007/s12666-012-0208-8


Cooling slope (CS) has been used in this study to prepare semi-solid slurry of A356 Al alloy, keeping in view of slurry generation on demand for Rheo-pressure die casting process. Understanding the physics of microstructure evolution during cooling slope slurry formation is important to satisfy the need of semi-sold slurry with desired shape, size and morphology of primary Al phase. Mixture of spherical and rosette shaped primary Al phase has been observed in the samples collected during melt flow through the slope as well as in the cast (mould) samples compared to that of dendritic shape, observed in case of conventionally cast A356 alloy. The liquid melt has been poured into the slope at 650 A degrees C temperature and during flow it falls below the liquidus temperature of the said alloy, which facilitates crystallization of alpha-Al crystals on the cooling slope wall. Crystal separation due to melt flow is found responsible for nearly spherical morphology of the primary Al phase.

Item Type: Journal Article
Additional Information: Copyright for this article belongs to SPRINGER INDIA, NEW DELHI, INDIA
Department/Centre: Division of Mechanical Sciences > Mechanical Engineering
Depositing User: Francis Jayakanth
Date Deposited: 28 Dec 2012 06:44
Last Modified: 28 Dec 2012 06:44
URI: http://eprints.iisc.ac.in/id/eprint/45455

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