Effects of Oxygen Partial Pressure on Oxidation Behavior of CMnSi TRIP Steel in an Oxidation-Reduction Scheme

Abstract

An oxidation-reduction scheme is an alternative approach for improving the galvanizability of advanced high-strength steel in the continuous hot-dip galvanizing process. Here, we investigated the effect of oxygen partial pressure (P O 2 ) on the oxidation behavior of a transformation-induced plasticity steel containing 1.5 wt% Si and 1.6 wt% Mn during heating to and holding for 60 s at 700 °C under atmospheres with various

Study on the growth mechanism of the internal oxide layer in 9% Ni cryogenic steel

“…The morphology and amount of Ni-Fe particles in the inner oxide layer depend strongly on temperature-time of heat treatment and composition including Ni and Si (Melfo et al, 2013;Harashima et al, 2020). In addition, the Kirkendall voids are usually present in the IOL, and with the increase in oxidation time and oxygen partial pressure, more voids are formed, which are the fast diffusion paths of gas, accelerating the oxidation process and improving the susceptibility of being detached from the steel substrate (Kim et al, 2017;Shen et al, 2020). The morphology and constituents of the EOL have been researched extensively, but the characteristics of the IOL, especially Ni-Fe particles, have not been understood sufficiently.…”