高速列车车轴DZ2钢的强韧性关系和低温脆性

刘硕, 张鹏, 王斌, 汪开忠, 许自宽, 胡芳忠, 段启强, 张哲峰

Investigations on Strength-Toughness Relationship and Low Temperature Brittleness of High-speed Railway Axle Steel DZ2

LIU Shuo, ZHANG Peng, WANG Bin, WANG Kaizhong, XU Zikuan, HU Fangzhong, DUAN Qiqiang, ZHANG Zhefeng

图3 DZ2钢材料在不同温度回火后组织中碳化物的相关参数与回火温度的关系

Fig.3 Relationship between carbide related parameters and tempering temperature in the microstructure of DZ2 steel after tempering at different tempering temperatures: (a) average size of carbide; (b) average spacing of carbides; (c) average aspect ratio of carbides; (d) the ratio of average size to average spacing