Abstract：The expansion curve of hot-rolled round steel in continuous cooling process to room temperature at different rates was measured using Gleeble thermal simulator. By combining with metallographic structure and hardness test, the continuous cooling transformation (CCT) curve for a high wear resistant alloy steel was drawn to analyze the effect of different cooling rates on the microstructure evolution. The results showed that the transformation products were ferrite + pearlite at the cooling rate of 0.05-0.1 ℃/s. When the cooling rate was 0.15 ℃/s, the transformation products were ferrite + pearlite + a small amount of bainite. When the cooling rate was 0.2-0.35 ℃/s, the transformation products were ferrite + pearlite + bainite + martensite. When the cooling rate was 0.5-1.5 ℃/s, the transformation products were bainite + a small amount of martensite. When the cooling rate was greater than 2 ℃/s, the transformation products were all martensite.
李金浩, 范斌. 一种高耐磨合金钢CCT曲线的测定与分析[J]. 物理测试, 2023, 41(2): 5-10.
LI Jinhao, FAN Bin. Measurement and analysis of CCT curve for a high wear resistant alloy steel. PHYSICS EXAMINATION AND TESTING, 2023, 41(2): 5-10.
Mazancova E, Mazanec K. Physical metallurgy characteristics of the M/A constituent formation in granular bainite[J]. Journal of Materials Processing Technology,1997,64(1/2/3):287.
2023, Vol. 41 
