Effect of Sn Addition, Process Atmosphere pO2, and Annealing Time on the Selective Oxidation of a C-2Mn-1.7Si (Wt Pct) Advanced High-Strength Steel During Continuous Galvanizing

The effects of process atmosphere pO2, annealing time, and a minor Sn addition on the selective oxidation of a Fe-0.1C-2Mn-1.7Si (wt pct) advanced high-strength steel during continuous galvanizing heat treatments were determined. The reference and 0.05 wt pct Sn-added steels were intercritically annealed at 1113 K (840 °C) for annealing times between 60 and 600 seconds in a N2-5 vol pct H2 gas atmosphere, where the process atmosphere pO2 was …