摘要
采用Gleeble-3500型热模拟试验机、金相显微镜研究了加热速度、冷却速度对低碳微合金钢相变点及CCT曲线的影响。结果表明:加热速度对奥氏体相变点有显著影响,随加热速度的增加,相变点呈线性增加;随冷却速度的降低,钢的强度显著下降,组织发生粗化,且出现带状组织。
The influences of heating rate and cooling rate on the phase transformation point and CCT diagram of low-carbon microallyed steel were studied using Gleeble-3500 thermo-meehanical simulator and OM. The results show that the heating rate has a great effect on phase transformation. With the increase of the heating rate, the phase transformation temperature increases linearly. With the decrease of cooling rate, the strength decreases significantly, and the mierostructure coarsens, furthermore, the banded microstructure appears at lower cooling rate.
出处
《热加工工艺》
CSCD
北大核心
2012年第6期135-136,140,共3页
Hot Working Technology
关键词
感应加热
加热速度
冷却速度
相变温度
high frequency induction heating
heating rate
cooling rate
phase transformation temperature
