Abstract: 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.

Key words: High-Speed Trains, Brake Disc, Quenching Temperature, Tempering Temperature

摘要： 随着列车高速化发展，对列车性能要求愈来愈高，尤其是制动系统中的制动盘性能。本文以锻钢制动盘材料为研究对象，进行了不同淬火、回火温度对比试验。结果表明，随淬火温度增加，强度提高，均可达1 100 MPa以上；而冲击功呈下降趋势。考虑强韧性匹配度，选择890～920 ℃淬火温度。随回火温度升高，强度降低，韧性升高；在650 ℃时，强韧性匹配较好，抗拉强度和屈服强度可达1 274、1 204 MPa，冲击功达43 J。综合考虑，推荐选取中间温度650 ℃为合适回火温度。

关键词: 高速列车, 制动盘, 淬火温度, 回火温度