|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||9th International Symposium on High Temperature Metallurgical Processing
||D-4: Effect of Temperature on Oxidation Behavior of Cr-Mo-V Steel with Different Cr Contents for High-speed Train Brake Discs
||Dan Wu, Fuming Wang, Changrong Li, Yaxu Zheng, Wei Shen
|On-Site Speaker (Planned)
In order to improve the oxidation resistance of Cr-Mo-V steel for high-speed railway brake discs, Cr was added to the steel. Effect of temperature on oxidation behavior of Cr-Mo-V steel with different Cr contents was studied by OM, SEM and XRD. The results show that the oxidation curves at 500 °C follow a parabolic law with prolongation of holding time. Meanwhile, the oxidation rate is slow and the oxide layer is thin. The oxidation products are mainly Fe2O3 and Fe3O4. While at 700 °C, the oxidation rate is also slow, but the oxidation curves follow a linear law within 2 h. The oxidation rate becomes fast and the oxidation curves follow a parabolic law beyond 2 h. The oxide layer becomes thicker obviously and the content of Fe2O3 increases. The thickness of oxide layer reduces and the oxidation resistance of the steel is improved with increasing Cr content.