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http://dx.doi.org/10.14773/cst.2014.13.1.1

Effect of Cr, Mo and W on the Microstructure of Al Hot Dipped Carbon Steels  

Trung, Trinh Van (School of Materials Science and Engineering, Hanoi University of Science and Technology)
Kim, Min Jung (School of Advanced Materials Science and Engineering, Sungkyunkwan University)
Park, Soon Yong (School of Advanced Materials Science and Engineering, Sungkyunkwan University)
Yadav, Poonam (School of Advanced Materials Science and Engineering, Sungkyunkwan University)
Abro, Muhammad Ali (School of Advanced Materials Science and Engineering, Sungkyunkwan University)
Lee, Dong Bok (School of Advanced Materials Science and Engineering, Sungkyunkwan University)
Publication Information
Corrosion Science and Technology / v.13, no.1, 2014 , pp. 1-5 More about this Journal
Abstract
A low carbon steel, Fe-2.25%Cr steel (ASTM T22), and Fe-2.25%Cr-1.6%W steel (ASTM T23) were aluminized by hot dipping into molten Al baths. After hot-dipping, a thin Al-rich topcoat and a thick alloy layer formed on the surface. The topcoat consisted primarily of a thin Al layer that contained a small amount of Fe, whereas the alloy layer consisted of Al-Fe intermetallics such as $Al_5Fe_2$ and AlFe. Cr, Mo, and W in T22 and T23 steels reduced the thickness of the topcoat and the alloy layer, and flattened the reaction front of the aluminized layer, when compared to the low carbon steel.
Keywords
hot-dip aluminizing; low carbon steel; T22; T23;
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