Experimental study on adhesion of oxide scale on hot-rolled steel strip

Authors

Xianglong Yu, University of WollongongFollow
Dongbin Wei, University of WollongongFollow
Xiaodong Wang, University of WollongongFollow
Zhengyi Jiang, University of WollongongFollow

RIS ID

53654

Publication Details

Yu, X., Wei, D., Wang, X. & Jiang, Z. (2012). Experimental study on adhesion of oxide scale on hot-rolled steel strip. Advanced Materials Research, 472-475 622-625.

Abstract

An experimental method was developed to study the adherence properties of the oxide scale formed on microalloyed low carbon steel after hot strip rolling. The evolution of the oxide scale during laminar cooling was investigated using Gleeble 3500 Thermal-Mechanical Simulator connected with a humid air generator. After the sample cooled down to ambient temperature, the oxide scale was protected by lacquer to prevent the scale from losing. Physicochemical characteristics of the oxide scale were examined and the adherence mechanism was discussed. Decomposed wustite a mixture of α-iron and magnetite (Fe₃O₄), can substantially improve the integrity of oxide scale. However, large quantities of hematite (Fe₂O₃) or retained wustite (FeO) were found detrimental to the adhesion of the oxide scale. It is found that the adherence of oxide scales significantly depends on the phase composition of oxide scales with different thickness.