Abstract
The mechanical failure of oxide scales in high temperature tensile tests has been investigated in the present work. The results of experimental tests and three-dimensional finite element modelling are presented. The cracking behaviour of oxide scales formed on mild steel has been studied using a high temperature tensile test technique at 800-870°C. Induction heating equipment has been used to construct a vertical cylindrical furnace. To imitate the surface conditions of the flat rolling process, a special geometry of specimens has been designed; the oxide scale forms on a gauge section with plane surfaces and a rectangular cross-section. A varying number of cracks have been detected, and the appropriate gauge geometry is defined for future investigations. A comparison between round and flat specimens is presented.
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