The Effect of Silicon on the High Temperature Oxidation Behavior of Low-carbon Steels Containing the Residual Elements Copper and Nickel

Effects of 0.1 wt.% Manganese, Aluminum, and Silicon on Oxidation and Copper-rich Liquid Phase Formation in an Iron–0.3 wt.% Copper–0.15 Wt.% Nickel Alloy

“…The behavior of specific internally oxidizing elements has not been investigated in detail until this study, and it appears that the primary effect of silicon additions appears to be related to the decrease in oxidation rate and that silicon additions alone do not affect occlusion behavior. This conclusion is not supported by the results for low carbon steels [16], where significant occlusion was found in steels containing 0.1 wt.% silicon. The discrepancies can be attributed to the presence of silicon with other easily oxidizable impurities (e.g.…”

“…Results from studies on steels containing approximately 0.1 wt.% silicon, 0.2 wt.% manganese, 0.05 wt.% aluminum, 0.3 wt.% copper, and 0.05-0.1 wt.% nickel [16] exhibit oxidation behavior similar to sample FeCuNiSi, but they have more occluded material. The TG-measured oxidation rates of the steels are similar to those for sample FeCuNiSi rather than FeCuNiMn or FeCuNiAl.…”

“…The previous work by the present authors [16] found that silicon appeared to play the determining role in reducing the amount of separated copper-rich liquid at the oxide/metal interface. This decrease was attributed to two mechanisms.…”

“…Enriched regions are then surrounded by oxide and isolated from the bulk of the metal. The simultaneous presence of copper and nickel is sufficient to form a rough interface and internal oxides [15], but the present authors have found that easily oxidizable impurities were necessary additions for achieving significant occlusion [16] in low carbon steels.…”

Effect of Arsenic and Copper+Arsenic on High Temperature Oxidation and Hot Shortness Behavior of C–Mn Steel

“…Currently, a lot of research have revealed the influence of copper alone or copper + tin on the oxidation behavior and surface hot shortness of steels and involved mechanism. [3][4][5][6][7][8][9][10] However, these studies almost focused on the copper content ranging from 0.25 wt% to 1.0 wt% instead of the lower copper content more commonly produced by electric furnaces, even the oxidation behavior and surface hot shortness of steels with the lower content of coexisted copper and arsenic. So far, Yin L. et al 11) has investigated the effect of 0.06 wt%-0.1 wt%As on oxidation behavior of Fe-0.3wt%Cu alloy in the (Received on January 2, 2016; accepted on March 17, 2016) To avoid surface hot shortness of C-Mn steels containing arsenic and copper + arsenic, high temperature oxidation behavior of the steels were systematically investigated.…”