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60 mm轧为8 mm.热轧后的试样进行水幕冷却,然后分别放置于500 ℃和400 ℃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.
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