On the technological properties of steel strips aluminized in Al-Si baths

Previous investigations have shown that the mechanical behavior of aluminized steel sheets are highly affected by variations in the thickness and hardness of the alloy layer. In this connection, some data on the mechanical properties and corrosion behavior of steel strips coated with Al and Al-Si al...

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Bibliographic Details
Published in:Journal of materials science letters 1996-06, Vol.15 (12), p.1032-1036
Main Authors: SHADY, M. A, EL-SISSI, A. R, ATTIA, A. M, EL-MAHALLAWY, N. A, TAHA, M. A, REIF, W
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Metallic coatings
Metals. Metallurgy
Production techniques
Surface treatment
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Summary:Previous investigations have shown that the mechanical behavior of aluminized steel sheets are highly affected by variations in the thickness and hardness of the alloy layer. In this connection, some data on the mechanical properties and corrosion behavior of steel strips coated with Al and Al-Si alloys are presented. Due to the formation of Al-rich topcoat layers, the tensile yield and fracture strengths were reduced by 8% and 20%, respectively, and the ductility was reduced by 15%. Aluminizing low carbon steel in pure Al and Al-Si baths provided a coating with good corrosion resistance when tested in alkaline media with up to 9%NaCl. The corrosion rate was lower than that obtained for noncoated and for galvanized specimens.
ISSN:0261-8028
1573-4811
DOI:10.1007/BF00274898