聂燚,尚成嘉,陈辉,王学敏,贺信莱

• 1:北京科技大学材料科学与工程学院

摘要(Abstract)：

利用彩色金相法研究了TMCP(Thermal-Mechanical Control Process)工艺生产的超高强度船体海洋工程钢中马氏体/奥氏体(M/A)在等温过程、连续冷却过程和回火时的演变特点。结果表明M/A的形态尺寸与分布主要取决于组织转变的温度,加长转变的时间长只对0.5μm以下微粒状M/A略有影响。冷却速度低于2℃/s时会形成尺寸在2μm以上较大的M/A,对钢的韧性有损害。另外,回火过程中尤其是600℃以上回火时,M/A的总量明显减少,M/A球团化趋势明显,M/A个体尺寸有明显增大,对钢的韧性起到破坏作用。

关键词(KeyWords)： 马氏体/奥氏体;组织;冲击韧性;回火;TMCP;船体钢

Abstract:

Keywords:

基金项目(Foundation): 国家“863”科研计划项目(2006.AA032507)

作者(Author): 聂燚,尚成嘉,陈辉,王学敏,贺信莱

DOI: 10.13289/j.issn.1009-6264.2010.02.019

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