Effect of Process Atmosphere Dew Point and Tin Addition on Oxide Morphology and Growth for a Medium-Mn Third Generation Advanced Steel During Intercritical Annealing

The combined effects of process atmosphere oxygen partial pressure, annealing time, and a 0.05 wt pct Sn addition on the selective oxidation of a model 0.1C-6Mn-2Si third generation advanced high-strength steel (3G-AHSS) composition were investigated. External and internal oxidation of both steels were observed after intercritical annealing at 963 K (690 °C) for holding times of 60 to 600 seconds under all process atmosphere dew points …