Effect of Temperature on Oxidation Behavior of Cr-Mo-V Steel with Different Cr Contents for High-Speed Train Brake Discs

被引：1

作者：

Wu, Dan ^{[1
]}

Wang, Fuming ^{[1
]}

Li, Changrong ^{[2
]}

Zheng, Yaxu ^{[1
]}

Shen, Wei ^{[1
]}

机构：

[1] Univ Sci & Technol Beijing, Sch Met & Ecol Engn, Beijing 100083, Peoples R China

[2] Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Beijing 100083, Peoples R China

来源：

9TH INTERNATIONAL SYMPOSIUM ON HIGH-TEMPERATURE METALLURGICAL PROCESSING | 2018年

基金：

中国国家自然科学基金;

关键词：

Brake disc steel; Oxidation behavior; Chromium; Temperature; Oxidation products; THERMAL FATIGUE; MICROSTRUCTURE; MECHANISMS; KINETICS;

D O I：

10.1007/978-3-319-72138-5_49

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In order to improve the oxidation resistance of Cr-Mo-V steel for high-speed railway brake discs, a higher Cr was added to the steel. Effect of temperature on the oxidation behavior of brake disc steel with different Cr contents was studied by OM, SEM and XRD. The results show that the oxidation curves at 500 degrees C obey a linear oxidation law in 0-2 h and 2-20 h, respectively. The oxide layer is thin and the oxidation products are Fe2O3 and Fe3O4. The oxidation curve at 700 degrees C follows a linear law within 2 h. With the oxidation time extending, the oxidation curves follow a parabolic law and the oxide layer becomes thicker. Moreover, the oxide layer is divided into two layers. The outer oxide layer is loose and is mainly Fe2O3, while the inner layer is denser and consists of FeO and FeCr2O4. The oxide layer thickness reduces and the oxidation resistance of the steel is improved with Cr content is increased.

引用

页码：503 / 512

页数：10

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