Abstract：With bright continuous annealing simulator, the microstructure and properties of 0.08C1.7Mn0.03Si steel treated with different overaging temperature and the phase transformation during continuous annealing process were studied. The results show that second phase was mostly of granular bainite and martensite in the specimen overaged at 450 ℃, mostly lath bainite and martensite in the specimen overaged at 350 ℃ and mostly martensite or MA island in the specimen overaged at 250 ℃; Tensile strength was increased and yield strength decreased, obviously, but n, and Erichsen value changed only a little with reduction of overaging temperature, thus, adjusting constituent ratio of second phase perhaps is an effective way for promoting plasticity of the steel due to the fact that elongation of the steel overaged at 350 ℃ was increased.
韩会全;霍刚;刘彦春;王国栋. 连续退火过时效温度对热处理双相钢组织性能的影响[J]. 钢铁, 2009, 44(2): 52-0.
HAN Huiquan;HUO Gang;LIU Yanchun;WANG Guodong. Effect of Overaging Temperature in Continuous Annealing on Microstructure and Properties of HeatTreated DP Steel. Iron and Steel, 2009, 44(2): 52-0.
2009, Vol. 44 
