热作模具钢DM的高温稳定性和热疲劳性能
施渊吉,于林惠,于照鹏,成功,吴晓春,滕宏春

High Temperature Stability and Thermal Fatigue Behavior of DM Hot Working Die Steel
Yuanji SHI,Linhui YU,Zhaopeng YU,Gong CHENG,Xiaochun WU,Hongchun TENG
表2 DM钢在620℃热稳保温1 h和20 h后碳化物的形貌、尺寸和类型
Table 2 The morphologies, sizes and types of carbides after tempering at 620℃ for 1 h and 20 h of DM steel
Morphology

Size (Length)

/nm

Type
1 hStrip100M3C
Rod600M7C3, M23C6
20 hNeedle100 ~ 200M2C
Block50 ~ 100M7C3