[P] P137~P170

[P145] Effect of Cu on the microstructure and fracture toughness of martensitic steel

*Sijia Wu¹, Daisuke Sasaki², Rintaro Ueji³, Kaito Shinoda², Junya Inoue^1,4 (1. Eng., UTokyo、2. Kurume College、3. NIMS、4. IIS, UTokyo)

キーワード：

Cu、Martensite、Microstructure

This work studies the effect of Cu on the hardness and fracture toughness of martensitic steel, showing that Cu improves fracture toughness and changes fracture mode after tempering.