Das, Prosenjit and Samanta, Sudip. K. and Venkatpathi, B. R. K. and Chattopadhyay, Himadri and Dutta, Pradip (2012) Microstructural Evolution of A356 Al Alloy During Flow Along a Cooling Slope. Transactions of the Indian Institute of Metals, 65 (6). pp. 669-672.

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Abstract

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 oC temperature and during flow it falls below the liquidus temperature of the said alloy, which facilitates crystallization of a-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:	Article
Subjects:	Al alloys
Depositing User:	Dr. Sarita Ghosh
Date Deposited:	13 Apr 2016 09:52
Last Modified:	13 Apr 2016 09:52
URI:	http://cmeri.csircentral.net/id/eprint/133

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