摘要
采用Gleeble-3500型热模拟试验机研究了加热速度、加热温度以及冷却速度对高频焊管用钢的组织和性能的影响规律。结果表明:加热速度对奥氏体相变点有显著影响,随加热速度的提高,相变点呈线性增加。在850～1000℃范围内,当加热温度达到925～950℃时,强度达到最低值。随加热温度进一步升高,强度增加。随冷却速度的降低,钢的强度显著下降,组织粗化,且出现带状组织。
Influences of heating rate, heating temperature and cooling rate on the microstructure and mechanical properties of electric resistance welded pipe steels were studied by using the Gleeble-3500 thermo-mechanical simulator. The results show that the influence of heating rate has great effect on phase transformation point, with the increase of heating rates, the phase transformation temperatures increased linearly. In the range of heating temperature from 850 ~C to 1000 ~, the strength of steels gets lowest value when heating temperature is 925-950℃, while, further increasing the heating temperature, the strength increases. The cooling rate has great effect on the microstructure and mechanical properties of samples cooled to room temperature, with decreasing cooling rate, the strength decrease significantly, meanwhile, the microstructure becomes coarse, even banded structure appears.
出处
《金属热处理》
CAS
CSCD
北大核心
2012年第8期87-92,共6页
Heat Treatment of Metals
基金
河北省自然科学基金(E2009000443)
关键词
电阻焊管
热处理
加热速度
加热温度
冷却速度
electric resistance welded pipe
heat treatment
heating rate
heating temperature
cooling rate
