本文通过模拟退火实验研究了连续退火工艺对冷轧双相钢板组织和力学性能的影响。结果表明，随均热温度升高，钢板强度首先大幅下降，之后逐渐上升到最高点，然后又有所下降，退火温度应保证均热时得到一定数量的奥氏体，但对于喷气冷却的快速冷却工艺，过高温度产生过多的奥氏体降低了淬透性，不利于钢板力学性能；均热后适当的缓冷可以析出新生铁素体，这有利于双相钢板的塑性。
In the present work, the effects of continuous annealing process on the microstructure and tensile properties of cold rolled dual phases steel have been studied by simulating the continuous annealing on a AWY-CCT simulator. The results show that ultimate tensile strength first decreases, and then increases gradually,and decreases again at last with the increasing soaking temperature. The soaking should make the steel get some austenite, but the overhigh soaking temperature will reduce the hardenability of austenite, which is bad for the mechanical properties for the rapid cooling process of gas spraying.In addition, the slow cooling after soaking is beneficial to formation of new ferrite, which is good for the plasticity of dual phase steel sheet.
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