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
表2 在不同温度回火后样品的拉伸性能和冲击性能
Table 2 Tensile and impact properties of specimens after tempering heat treatment at different tempering temperatures
Tempering temperature430oC500oC560oC630oC700oC
Ultimate tensile strength (UTS) / MPa135712241120898761
Fracture elongation / %11.714.017.020.728.4
Room temperature impact energy / J34.352.355.79098.7
Low temperature impact energy / J2439.743.371.390.3