【摘要】 采用两种管线钢材料 ,通过再结晶区和未再结晶区的五道次变形将试样厚度从 6 0 mm轧为 8mm。热轧后的试样进行水幕冷却 ,然后分别放置于 5 0 0℃和 40 0℃的加热炉中随炉冷却以模拟卷取。结果表明 ,对于两种管线钢材料通过适当的冷却工艺都可以得到以针状铁素体为主的组织更多还原

【Abstract】 Two pipe line steel specimens with 60 mm thickness were deformed to 8 mm thickness in five passes in either recrystallized or non recrystallized austenite regions subsequent to austenitization at 1200 ℃ After hot rolling, the specimens were spray water cooled and then furnace cooled from 500 ℃ and 400 ℃ to simulate coiling process The result shows that under the appropriate cooling process, the microstructure that contains mainly acicular ferrite could be obtained in all the two steels更多还原