HTP X80管线钢的晶粒细化与组织控制

来源期刊：钢铁2009年第3期

论文作者：缪成亮 尚成嘉 曹建平 王学敏 贺信莱

文章页码：62 - 66

关键词：HTP； X80管线钢； 再结晶； 等温转变； 连续冷却转变

Key words：HTP； X80 pipeline steel； recrystallization； isothermal transformation； continuous cooling transformation

摘    要：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。

Abstract: The technologyical points of grain refinement and microstructure control of HTP X80 were investigated by means of thermal simulation trial.Austenite recrystallization temperature zone and non-recrystallization temperature zone were determined.The characteristics of phase transformation of high Nb HTP steel in continuous cooling process were disclosed.The research results have instructional significance to refine austenite grain,prohibit duplex grain structure,obtain ideal microstructure by cooling control.