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通过热模拟实验研究了HTP X80管线钢的晶粒细化与组织控制的工艺要点,确定了奥氏体再结晶温度区和非再结晶温度区,揭示了高Nb含量的HTP钢在连续冷却过程中的相变特点.所得到的技术要点对细化奥氏体晶粒,避免混晶的出现,以及通过控制冷却得到理想的相变产物具有指导性.

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