Calculation of Selective Oxidation in Grain and Grain Boundary

Modelling and experiment of selective oxidation and nitridation of binary model alloys at 700 °C – The systems Fe, 1 wt.%{Al, Cr, Mn, Si}

“…In Fe-1Cr, which shows the severest grain boundary attack, the depth of the grain boundary oxides advances the 2 lm thick zone of internal precipitates by additional 2-3 lm. The enhanced formation of corrosion products along grain boundaries, is attributed to enhanced oxygen diffusion along grain boundaries in the metal [45,46] ( Table 1). Pre-segregation of the alloy elements during casting [47,48] would in principle also cause enhanced grain boundary oxide formation.…”