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模拟海洋环境中两种结构钢焊接接头腐蚀特性

于美 王瑞阳 刘建华 李松梅

于美, 王瑞阳, 刘建华, 等 . 模拟海洋环境中两种结构钢焊接接头腐蚀特性[J]. 北京航空航天大学学报, 2013, 39(8): 1020-1025.
引用本文: 于美, 王瑞阳, 刘建华, 等 . 模拟海洋环境中两种结构钢焊接接头腐蚀特性[J]. 北京航空航天大学学报, 2013, 39(8): 1020-1025.
Yu Mei, Wang Ruiyang, Liu Jianhua, et al. Corrosion properties of two kinds of hull steels welding joints in simulated marine environments[J]. Journal of Beijing University of Aeronautics and Astronautics, 2013, 39(8): 1020-1025. (in Chinese)
Citation: Yu Mei, Wang Ruiyang, Liu Jianhua, et al. Corrosion properties of two kinds of hull steels welding joints in simulated marine environments[J]. Journal of Beijing University of Aeronautics and Astronautics, 2013, 39(8): 1020-1025. (in Chinese)

模拟海洋环境中两种结构钢焊接接头腐蚀特性

基金项目: 国家自然科学基金资助项目(51171011)
详细信息
  • 中图分类号: TG172

Corrosion properties of two kinds of hull steels welding joints in simulated marine environments

  • 摘要: 采用周浸实验模拟海水周期浸润环境,中性盐雾实验模拟海洋大气环境,加以恒载荷拉伸应力条件研究了10CrNi3MoV和12MnSiNiCrMo两种结构钢焊接接头的腐蚀特性,并测试分析了其焊接接头各处的动电位极化曲线.通过金相分析研究了两种钢焊缝区、热影响区与母材的显微组织差别.结果表明:两种钢的焊缝区较母材更易发生腐蚀,应力腐蚀断裂位置均位于焊缝区,且焊缝区腐蚀电流密度最大,母材最小;10CrNi3MoV钢焊接接头的耐蚀性能要好于12MnSiNiCrMo钢,在较低和较高应力水平下10CrNi3MoV钢焊接接头的耐应力腐蚀性能也优于12MnSiNiCrMo钢,同时12MnSiNiCrMo钢各区腐蚀电流密度都远大于10CrNi3MoV钢.焊接后不同区域金相组织的差别是造成上述现象的原因,母材区适量的针状铁素体能够保持其强韧性和耐蚀性,焊缝区过量的铁素体则导致其耐蚀性和耐应力腐蚀性能降低.

     

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出版历程
  • 收稿日期:  2012-08-30
  • 修回日期:  2012-11-29
  • 网络出版日期:  2013-08-30

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