Influence of quenching cooling rate on microstructure and properties of vanadium and niobium microalloyed cast steel brake disc

doi:10.13251/j.issn.0254-6051.2025.05.039

Abstract

Abstract: Quenching and tempering treatments were carried out on V and Nb microalloyed high-speed railway cast steel brake discs at different quenching cooling rates. Combined with the continuous cooling transformation curves, the differences in microstructure and mechanical properties and its mechanism of the tested cast steel were compared and analyzed. The results show that a large quantity of bainite in the microstructure appear when using a slower cooling rate quenching medium, which differs greatly from the matrix of tempered martensite and leads to the brittleness. While under higher cooling rate quenching media, the cast steel brake disc obtains a completely tempered martensite. When using a cooling medium with a maximum cooling rate of 140-165 ℃/s and a cooling rate of 40-60 ℃/s at 300 ℃ for quenching, the optimal comprehensive mechanical properties can be obtained for the tested V and Nb microalloyed high-speed railway cast steel brake disc.

Key words: cast steel brake disc, vanadium, niobium, quenching cooling rate, microstructure, properties

CLC Number:

U238

Zhu Jiaqi, Jiao Biaoqiang, Lü Baojia, Cai Tian, Tan Zhunli. Influence of quenching cooling rate on microstructure and properties of vanadium and niobium microalloyed cast steel brake disc[J]. Heat Treatment of Metals, 2025, 50(5): 253-257.

References

[1] 郭奇宗. 基于现车模型和制动控制的基础制动装置热负荷仿真分析[J]. 铁道机车车辆, 2020, 40(4): 21-25.
Guo Qizong. Thermal load simulation analysis of basic brake device based on EMU's brake control[J]. Railway Locomotive & Car, 2020, 40(4): 21-25.
[2] 曹建行. 大功率制动盘紧固连接设计及拧紧技术研究[J]. 铁道机车车辆, 2022, 42(1): 39-45.
Cao Jianhang. Research on the design of fastening connection and process of assembly technology of high power brake disc[J]. Railway Locomotive & Car, 2022, 42(1): 39-45.
[3] 郭红伟. 合金钢制动盘材料的摩擦及表面损伤研究[D]. 北京: 北京交通大学, 2018.
Guo Hongwei. Research on friction and surface damage of alloy steel brake disc materials[D]. Beijing: Beijing Jiaotong University, 2018.
[4] 李继山, 林祜亭, 李和平, 等. 高速列车合金锻钢制动盘温度场仿真分析[J]. 铁道学报, 2006, 28(4): 45-48.
Li Jishan, Lin Huting, Li Heping, et al. Simulation analysis on the alloy-forge steel brake disc temperature field for a high-speed train[J]. Journal of the China Railway Society, 2006, 28(4): 45-48.
[5] Gao J G, Dong Z Z, Ren H T, et al. Microstructure evolution in an advanced 9Cr-1.5Mo-1Co-VNbBN alloy during heat treatment and high temperature aging[J]. Steel Research International, 2019, 90(5): 1800534.
[6] 章阳, 吕宝佳, 金哲. 高速动车组制动距离及制动减速度参数研究[J]. 铁道机车车辆, 2020, 40(3): 11-16.
Zhang Yang, Lü Baojia, Jin Zhe. Research on braking distance and deceleration parameters of high-speed EMU[J]. Railway Locomotive & Car, 2020, 40(3): 11-16.
[7] 王程明, 王福明, 肖寄光, 等. Cr-Mo-V高铁制动盘用钢的奥氏体晶粒长大行为[J]. 金属热处理, 2017, 42(12): 14-19.
Wang Chengming, Wang Fuming, Xiao Jiguang, et al. Austenite grain growth behavior of Cr-Mo-V steel for high speed railway brake disc[J]. Heat Treatment of Metals, 2017, 42(12): 14-19.
[8] 邬冬生, 邓伟, 文辉, 等. 钒含量对时速350 km高铁制动盘用Cr-Mo-V钢奥氏体晶粒长大的影响[J]. 金属热处理, 2023, 48(9): 136-143.
Wu Dongsheng, Deng Wei, Wen Hui, et al. Effect of V content on austenite grain growth of Cr-Mo-V steel for brake disc of 350 km/h high speed railway[J]. Heat Treatment of Metals, 2023, 48(9): 136-143.
[9] 吴丹, 王福明, 程锦, 等. 钒对高铁制动盘钢中碳化物析出及力学性能的影响[J]. 工程科学学报, 2018, 1(1): 68-75.
Wu Dan, Wang Fuming, Cheng Jin, et al. Effect of V on carbide precipitation behavior and mechanical properties of brake disc steel for high-speed trains[J]. Chinese Journal of Engineering, 2018, 1(1): 68-75.
[10] Wu D, Wang F, Cheng J, et al. Effects of Nb and tempering time on carbide precipitation behavior and mechanical properties of Cr-Mo-V steel for brake discs[J]. Steel Research International, 2018, 89(5): 1700491.
[11] Wu D, Wang F M, Cheng J, et al. Effect of Nb and V on the continuous cooling transformation of undercooled austenite in Cr-Mo-V steel for brake discs[J]. International Journal of Minerals, Metallurgy and Materials, 2018, 25(8): 892-901.

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