摘要
采用硬度法测得Nb、Ti低合金高强度冷轧薄板的再结晶温度为 6 0 0℃。再结晶温度以下退火时 ,钢的屈服强度随温度和时间的增加而降低 ,延伸率则增大 ;再结晶温度以上退火时 ,钢的屈服强度及延伸率变化不明显。实验提出合理选择热轧钢坯的强度 ,可避免不必要地增大冷轧机的负荷。
The recrystallization temperature of the low alloy high strength cold rolled sheet containing niobium and titanium is 600℃, which is obtained by the hardness testing after annealing. When the annealing temperature is less than the recrystallization temperature, the yield strength of the sheet decreases with the increment of the annealing temperature and time.When the annealing temperature is higher than the recrystallization temperature, the effects of annealing temperature and time on the yield strength of the sheet are not significant. Finally, the paper proposes that a reasonable strength of the hot rolled billet should be selected to decrease the load of the cold mill.
出处
《金属成形工艺》
2001年第6期5-7,16,共4页
Metal Forming Technology
关键词
冷轧薄板
机械性能
退火
低合金高强度钢
high strength cold rolled steet
low alloy steel with Nb,Ti
annealing
