摘要
研究了热处理工艺对1Cr12Ni3M02VN钢力学性能的影响。结果表明，淬火温度超过1030℃时．钢的奥氏体晶粒显著长大，导致抗拉强度和冲击韧度都显著降低；淬火加热时间即奥氏体化时间为0．5～1h时，钢的抗拉强度和冲击韧度均明显下降；淬火加热时间超过1h，二者的变化不大。若淬火和回火冷却速度过低，则沿晶界析出碳化物M23C6，从而导致冲击韧度明显下降。
The effect of heat treatment process on the mechanical properties of 1Cr12Ni3Mo2VN steel was investigated. The reaults indicate that the austenite grains of the steel will grow obviously when the austenitizing temperature is over 1 030℃ , consequently resulting in appreciable decrease in both tensile strength and impact toughness. When the austenitizintg time ranges over 0.5 h to 1.0 h, the increase in tensile strength and the decrease in impact toughness will both be obvious. When the austenitizing time exceeds 1 h, the variation in the above properties will become unnoticeable. If the cooling after austenitizing and tempering are excessively slow, M23 C6 carbide will precipitated along the grain boundary of steel, thus making impact toughness decrease greatly.
出处
《热处理》
CAS
2009年第5期35-40,共6页
Heat Treatment
