Abstract
The effect of Fe2B orientation in Fe–3.5wt.% B steel on its erosion–corrosion behavior in 460°C flowing zinc was investigated. The results indicate that the erosion–corrosion resistance of Fe–3.5wt.% B steel relies strongly on Fe2B orientation. The orientation of Fe2B determines the erosion–corrosion interface, which governs the diffusion, interfacial reaction, failure mode of Fe2B, and significantly influences the erosion–corrosion behavior. The strong pinning effect of corrosion products and columnar Fe2B suppresses erosion–corrosion; this suppression results in good erosion–corrosion resistance to liquid zinc of the Fe–3.5wt.% B steel with the [002] direction of Fe2B perpendicular to the erosion–corrosion interface.
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