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Title: Microstructural study and differential scanning alorimetry analysis at elevated temperatures of uperheated as-cast A357 alloy
Authors: Mazlee, Mohd Noor
Shamsul, Baharin Jamaludin, Prof. Dr.
Kamarudin, Hussin, Brig. Jen. Dato' Prof. Dr.
Shaiful Rizam, Shamsudin
???metadata.dc.contributor.url???: mazlee@unimap.edu.my
Keywords: Endothermic peaks;Solidification structures;Superheating;A357;Alloy
Issue Date: 2009
Publisher: University of Malaya
Citation: International Journal of Mechanical and Materials Engineering, vol.4(2), 2009, pages 181-185
Abstract: The microstructure of superheated as-cast A357 alloy has been analysed to study the solidification structures of α-Al dendrites, eutectic Si particles and intermetallic compounds at different sections of the specimen. The primary dendritic arms are broken to globular and spherical shaped of α-Al dendrites due to the thermal effect of superheating thermal treatment. Differential scanning calorimetry showed faster formation of endothermic peaks of superheated as-cast A357 alloy relatively also believed to be attributed by superheating thermal treatment. The solidification sequence of superheated A357 alloy was same as Sr modified Al7Si-Mg alloy [4] except for the reaction involving Al5FeSi intermetallic compound which started with Liq. → Al dendrites followed by Liq. → Al + Si and lastly Liq. → Al + Si + Mg2Si + Al8FeMg3Si6.
Description: Link to publisher's homepage at http://myais.fsktm.um.edu.my/
ISSN: 1823-0334
Appears in Collections:Shamsul Baharin Jamaludin, Prof. Dr.
Mazlee Mohd Noor, Dr.
Kamarudin Hussin, Brig. Jen. Datuk Prof. Dr.
School of Materials Engineering (Articles)

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