V和Si对珠光体车轮钢显微组织和力学性能的影响规律*

左越, 周世同, 李昭东, 潘涛, 项金钟, 雍岐龙

Effect of V and Si on Microstructure and Mechanical Properties of Medium-carbon Pearlitic Steels for Wheel

ZUO Yue, ZHOU Shitong, LI Zhaodong, PAN Tao, XIANG Jinzhong, YONG Qilong

表2 实验钢的奥氏体晶粒尺寸、先共析铁素体体积分数、珠光体团尺寸与片层间距

Table 2 Austenite grain size, proeutectoid ferrite volume fraction, pearlite colony size and interlamellar spacing of studied steels

No. Austenite grain size/μm Ferrite volume fraction / % Pearlite colony size/μm Pearlite interlamellar spacing /μm 1# 23.1±1.2 4.3 9.8±1.3 0.172±0.02 2# 20.1±0.5 12.2 7.4±0.9 0.147±0.02 3# 14.9±0.7 21.4 5.8±0.4 0.140±0.02 4# 21.4±0.6 19.5 7.7±0.8 0.159±0.02