CAJ | 학술논문

以C-Si-Mn系相变强化冷轧高强度钢板为研究对象，研究了连续退火快速冷却工艺对冷轧双相钢组织和力学性能的影响。研究发现，对于双相钢，在连退冷却能力不足的情况下，需添加合金元素，使CCT曲线右移，降低双相钢的临界冷却速率；在提高连退快冷冷却速率的情况下，可以减少合金元素的添加量，节约成本。冷却速率越高，双相钢的强度越高，延性下降。
이C-Si-Mn계상변강화랭알고강도강판위연구대상，연구료련속퇴화쾌속냉각공예대랭알쌍상강조직화역학성능적영향。연구발현，대우쌍상강，재련퇴냉각능력불족적정황하，수첨가합금원소，사CCT곡선우이，강저쌍상강적림계냉각속솔；재제고련퇴쾌랭냉각속솔적정황하，가이감소합금원소적첨가량，절약성본。냉각속솔월고，쌍상강적강도월고，연성하강。
Effect of quick cooling process on microstructure and mechanical properties of C -Si-Mn dual phase transformation cold-rolled high-strength steel was studied .It was found that under low capacity conditions in continuous annealing cooling process, alloying elements needed to be added to shift the CCT curves right to reduce the critical cooling rate of dual -phase steel;Addition of alloying elements may be reduced by raise of cooling rate in continuous annealing , with reduced cost .The higher the cooling rate , the higher the dual-phase steel strength , and the lower of ductility .