|About this Abstract
||2023 TMS Annual Meeting & Exhibition
||High Performance Steels
||Effects of Cr on corrosion behaviors of Hadfield steel in a neutral aqueous environment
||Sung Jin Kim, Duck Bin Yun, Jin Sung Park
|On-Site Speaker (Planned)
||Sung Jin Kim
To expand the industrial applicability of Hadfield steel, its corrosion resistance should be improved. From this perspective, the effects of Cr addition to the steel on the corrosion behaviors were examined using a range of electrochemical measurements. The addition of Cr within a certain amount (approximately 1~2 wt.%) can be effective in decreasing the corrosion kinetics, but addition of more than that can worsen the corrosion resistance. In particular, the decrease in corrosion resistance can be more appreciable in the heat affected zone of the welded steel samples.
In this presentation, the change in corrosion behaviors of the steel with respect to Cr contents will be interpreted mechanistically based on the characteristics of the corrosion scale formed on the surface, and the precipitation of M23C6 in the steel matrix. Based on the results, the most desirable alloying strategies of the steel for ensuring the long-term corrosion resistance will be provided.
||Iron and Steel, Sustainability, Other