The influence of zero time holding quenching temperature on the 20 MnV steel 's strength and hardness
零保温淬火温度对20MnV钢强度和硬度的影响
The microalloying effect of Nb on the metallurgic-mechani-cal characteristics of MnV based unquenched steel has been studied .
研究了微量Nb对MnV基的非调质微合金钢的冶金力学特性的影响。