Abstract
The pitting corrosion resistance of rapidly solidified FeCr alloys was compared with that of conventionally processed counterparts. Rapid solidification resulted in the formation of microcrystalline alloys in which inclusions detrimental for pitting corrosion were finely distributed. Accordingly, a large number of micropits were formed on the rapidly solidified alloy but were quickly repassivated. By contrast, the density of micropits was lower on the conventionally processed alloys but catastrophic propagation of pits occurred shortly since conventional processing led to coarse precipitation and segregation in which detrimental impurities were highly concentrated.
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