Li Kaixin,Deng Wei,Wen Hui,et al.Effect of Heat Treatment on Microstructure and Properties of Brake Disc for High-Speed Trains with 350 km/h[J].Special Steel,2023,44(04):80-87.
Li Kaixin,Deng Wei,Wen Hui,et al.Effect of Heat Treatment on Microstructure and Properties of Brake Disc for High-Speed Trains with 350 km/h[J].Special Steel,2023,44(04):80-87. DOI: 10.20057/j.1003-8620.2022-00228.
With the development of high-speed trains, the requirements for performance of trains are getting higher and higher, especially the performance of brake discs in braking systems.This paper studied the forged steel brake disc material, the comparative tests of different quenching and tempering temperatures were performed;The results show that quenching temperature increase resulted in the strength rising, which could reach more than 1 100 MPa, on the contrary, the impact energy values show a downward trend. With consideration of the matching degree of strength and toughness, 890-920 °C is selected as the appropriate quenching temperature range. At 650℃, the strength and toughness match is better, and the tensile strength and yield strength can reach 1 274,1 204 MPa, and the impact power is up to 43 J. Considering comprehensively, it is recommended to choose the intermediate temperature of 650 ℃ as the appropriate tempering temperature.