Abstract
Aluminised steel sheets are currently used in many applications where the surface properties of aluminium combined with the formability, mechanical strength, and economic advantages of sheet material are obtained. During aluminising by hot dipping, an intermetallic reaction occurs due to diffusion between the aluminium bath and the steel sheet. The phases formed within the intermetallic layer and its thickness are important for determining the behaviour of the coating. In the present work, low alloy, medium carbon, low carbon 9Γ2C (9G2S), and low carbon steel sheets are used for hot dipping in a commercial purity aluminium bath. The temperatures used for hot dipping were 710 and 770°C and the immersion times were 2, 4, and 6 min. The results indicate that the thickness of the intermetallic layer X increases with increasing bath temperature and immersion time t. The variation of X with t followed the relationship X=Ktn, where the constant K and the exponent n were found to depend on the carbon content and on the total alloying element content in the steel strip. With increasing total alloying elements, the thickness decreased. Analysis of the reaction layer indicates the formation of FeAl2 in most cases in addition to FeAl3, Fe2Al5, and Fe2Al3.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
