摘要
通过模拟退火试验研究了气冷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,effects of continuous annealing process on 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 with increasing soaking temperature the ultimate tensile strength decreases at first,afterwards increases gradually to the peak,and then decreases again at last.The soaking temperature should make the steel have some austenite,but the overhigh soaking temperature will produce too much austenite to reduce the har-denability of steel,which is bad for mechanical properties of steel for the rapid cooling process by gas spraying.In addition,a slow cooling after soaking is beneficial to formation of new ferrite,which is good for the plasticity of dual phases steel sheet.
出处
《物理测试》
CAS
2010年第2期6-9,15,共5页
Physics Examination and Testing
关键词
双相钢
连续退火工艺
力学性能
缓慢冷却
dual phases steel
continuous annealing process
mechanical properties
slow cooling
