段修刚,武会宾,蔡庆伍,唐荻

• 1:北京科技大学冶金工程研究院

摘要(Abstract)：

采用复合微合金化的成分设计,通过TMCP(热机械处理)工艺开发了适应大线能量焊接的FH500高强船板钢。运用埋弧焊和垂直气电立焊对FH500船板钢进行了焊接试验,对两种焊接方式的焊接接头分别进行了拉伸、弯曲、冲击等力学试验,研究了不同热输入值对接头力学性能的影响;运用透射电镜对焊接热影响区组织析出物进行了分析。结果表明:FH500高强船板钢组织以针状铁素体为主,具有良好的强韧性匹配;两种焊接方式接头力学性均能满足船级社标准。焊接热影响区(HAZ)组织为针状铁素体和贝氏体组织,晶内含有大量纳米级析出物,能谱显示,其成分为钛铌的复合析出物。

关键词(KeyWords)： 大线能量焊接;FH500高强船板钢;力学性能;组织

Abstract:

Keywords:

基金项目(Foundation): 国家“十一五”科技支撑计划资助项目(2006BE03A0)

作者(Author): 段修刚,武会宾,蔡庆伍,唐荻

DOI: 10.13289/j.issn.1009-6264.2012.03.014

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