Effect of Coating-thickness on the Formability of Hot Dip Aluminized Steel

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Published: Jun 22, 2016

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G. H. Awan
F. Ahmed
L. Ali
F. Hasan
M. S. Shuja

Abstract

The influence of coating thickness on the formability and ductility of hot-dip-aluminized steel has been determined using a 3-point bend test and optical metallography. The ductility / formability was estimated from the 3-point bend test wherein the angle of bend at which the cracks start to appear on the surface of the aluminized sheet during bending, was taken as an index of the formability / ductility. It was observed that as the amount of silicon in the aluminizing melt was gradually increased the measured ductility of the sheet sample also increased. Metallographic examination has shown that as the amount of silicon in the aluminizing melt was increased the thickness of the intermediate compound layer, between the outer aluminum coat and the substrate steel, decreased. It was thus indicated from these experiments that the formability / ductility of the sheet was inversely related to the thickness of the interlayer.

Article Details

Issue
2008: Volume 2 Jan 2008
Section
Polymer Engineering and Chemical Engineering, Materials Engineering, Physics, Chemistry, Mathematics

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