将高速车轴钢-DZ2（0.05V0Nb）沿纵向切取直径为φ5mm棒状拉伸比例试样的毛坯试样，后在850℃保温1h淬火后675℃保温4h回火，后按照国标GB/T 2975-2018的规定将毛坯试样加工成直径为φ5mm棒状拉伸比例试样 按照国标GB/T 228.3-2019在MTS Landmark 370 50型电液伺服万能材料试验机上进行室温拉伸试验 

The high speed axle steel -DZ2 (0.05V0Nb) is longitudinally cut from the blank sample with diameter φ5mm rod tensile proportion sample, and then held at 850℃ for 1h after quenching and tempered at 675℃ for 4h. After that, according to the national standard GB/T 2975-2018, the blank samples were processed into rod tensile proportional samples with a diameter of φ5mm. According to the national standard GB/T 228.3-2019, the tensile test was carried out at room temperature on MTS Landmark 370 50 electro-hydraulic servo universal material testing machine.