通过选材试验和化学成分设计,研制的高速动车组制动盘材料常温及高温下机械性能较好,热膨胀系数较小,冷热疲劳性能优异,热传导系数较高,并且锻造工艺性能好,是理想的制动盘材料。 Through the material selection test and chemical composition design, the brake disc materials of high speed EMU developed at normal temperature and high temperature have better mechanical properties, smaller thermal expansion coefficient, excellent thermal and thermal fatigue properties, higher thermal conductivity and good forging process performance, which is ideal Brake disc material.