Corrosion Behavior of Ti-Containing Wear-Resisting Steel ANM450 in Simulated Coal Mine Water Environment

The corrosion behavior of Ti-containing low alloy wear-resistant steel ANM450 and low alloy martensitic wear-resistant steel Hardox450 in three kinds of simulated coal mine water solutions with weak acidity, weak alkalinity and high salinity and deionized water was studied by immersion corrosion test and electrochemical test, and the corrosion mechanism of ANM450 steel was analyzed. The results showed that the corrosion degree of the four solutions to the two steels was in sequence of weak acid solution, weak alkaline solution, high salinity solution and deionized water. The corrosion resistance of ANM450 steel was worse than that of Hardox450 steel. The reason was that there were TiC particles in the microstructure of ANM450 steel, and the corrosion preferentially occurred at the defects of the interface between TiC particles and the matrix.