High-temperature mechanical simulation and analysis of 25CrMo4 used for mirror plate

Mirror plate is a most important part of large hydrogenerator,and its forging becomes a bottleneck of China-made large hydrogenerator.25CrMo4 has better material properties and can be used for mirror plate of large hydrogenerator.High-temperature mechanical properties of 25CrMo4 were studied with high temperature mechanical simulation technique.The influencing factors of grain uniformity were analyzed by recrystallization microstructure observation of 25CrMo4.The experimental results show that higher temperature and lower strain rate are benefitial to improve grain uniformity,and different deformation zone has different grain size.