Effect of TiC particles on the oxidation behavior of 2Cr13 stainless steel in a simulated marine environment at 550°C

Abstract

In this study, the oxidation behavior of 2Cr13 stainless steels with/without TiC particles was investigated in a simulated marine environment at 550°C. The results showed that TiC particles greatly accelerated the oxidation rate of 2Cr13 steel during the cyclic oxidation reaction. At the same time, the effect of acceleration was alleviated by the small size and uniform distribution of TiC particles. As galvanic corrosion in the vicinity of TiC particles occurred in 3.5% NaCl solution spray, more NaCl particles deposited on the alloy surface, especially in the area around TiC particles. At 550°C, some shell‐like oxidation products were generated on the 2Cr13 steel surface due to TiC addition, and then the porous oxidation products provided poor protective ability. Besides, the defect and stress in the oxide scale was reduced due to the small size and uniform distribution of TiC particles in 2Cr13 steel.

Influence of TiC addition on high‐temperature oxidation in rich pO2 atmosphere on Cr‐rich stainless steel

“…At present, TiC-reinforced alloys were successfully fabricated by various methods, such as traditional ingot metallurgy, a liquid pressing infiltration process, and powder metallurgy. [1][2][3][4][5][6][7][8][9] Compared to other preparation technologies of TiC particle-reinforced alloys, a new in-situ technology, consisting of traditional ingot metallurgy, selfpropagation high-temperature synthesis (SHS), and electroslag remelting techniques, can realize industrial production without changing the current production processes of the enterprises. [10,11] The new technology can utilize the existing metallurgical process and obtain a clean interface and uniform distribution of TiC particles in the microstructure.…”