快冷对中低碳钢SEW管材组织性能的影响Effect of accelerated cooling on microstructure and properties of middle-carbon and low-carbon steel SEW tubing and casing
毕宗岳,韦奉,王涛,唐俊,李远征,李敬波
摘要(Abstract)：
针对特定的SEW管材制造工艺,研究了快速冷却工艺对不同成分中低碳钢SEW管材的显微组织、力学性能及焊缝沟腐蚀敏感性的影响。结果表明:随着冷却速度的提高,先共析铁素体得到了抑制,带状偏析得到了改善,焊缝组织得到了优化;当终冷温度为620~680℃,试验钢的屈服强度提高了55~130 MPa,抗拉强度提高了35~115 MPa,焊缝沟腐蚀敏感系数α降低为1.07~1.13。
关键词(KeyWords)： 热张力减径电阻焊;套管和油管;快速冷却;组织性能;沟槽腐蚀
基金项目(Foundation): 国家科技支撑计划(2011BAE25B00)
作者(Author): 毕宗岳,韦奉,王涛,唐俊,李远征,李敬波
DOI: 10.13289/j.issn.1009-6264.2014.s1.008
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