针对30CrNiMo（/%:0.30C, 0.85Mn, 0.25Si, 0.015P, 0.008S, 0.96Cr, 0.43Mo, 0.78Ni, 0.025Al）高强度钢调质棒材冲击功不稳定的问题，......

对直径为φ195mm的Ti-V微合金化26CrMoV钢(/%:0.27C,0.45Mn,0.25Si,0.006P,0.004S,0.97Cr,0.78Mo,0.002Ti,0.043V)热轧棒材取样后......