[1]毕宗岳.低碳微合金钢管焊接接头软化研究[J].焊管,2022,45(7):1-6.[doi:10.19291/j.cnki.1001-3938.2022.07.001]
 BI Zongyue.Research on Softening of Welded Joint in Low Carbon Microalloyed Steel Pipe[J].,2022,45(7):1-6.[doi:10.19291/j.cnki.1001-3938.2022.07.001]
点击复制

低碳微合金钢管焊接接头软化研究()
分享到:

《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
45
期数:
2022年第7期
页码:
1-6
栏目:
试验与研究
出版日期:
2022-07-28

文章信息/Info

Title:
Research on Softening of Welded Joint in Low Carbon Microalloyed Steel Pipe
文章编号:
10.19291/j.cnki.1001-3938.2022.07.001
作者:
毕宗岳
1. 国家石油天然气管材工程技术研究中心,陕西 宝鸡 721008;2. 宝鸡石油钢管有限责任公司,陕西 宝鸡 721008;3. 陕西省高性能连续管重点实验室,陕西 宝鸡 721008
Author(s):
BI Zongyue
1.Chinese National Engineering Research Center for Petroleum and Natural Gas Tubular Goods,Baoji 721008,Shaanxi,China;2.Baoji Petroleum Steel Pipe Co.,Ltd.,Baoji 721008,Shaanxi,China;3.Shaanxi Province Key Laboratory of High Performance Coiled Tubing,Baoji 721008,Shaanxi,China
关键词:
低碳微合金钢管成型形变强化热影响区软化
Keywords:
low carbon microalloyed steel pipeformingdeformation strengtheningheat affected zone softening
分类号:
TG407
DOI:
10.19291/j.cnki.1001-3938.2022.07.001
文献标志码:
A
摘要:
针对低碳微合金钢管焊接接头热影响区软化现象,基于Gleeble-3500、EBSD、TEM等技术,研究了制管过程中的形变强化和焊接过程中两相区温度对组织和性能的影响。结果表明,管材在成型过程中的塑性变形,使其小角度晶界比例及位错密度显著提升,当管材变形量为9.8%时,小角度晶界比例增加27.5%,位错密度增加5.04×1013 m-2,屈服强度上升22%,抗拉强度上升11%。由于焊接热循环的影响,两相区温度下强度发生了明显的下降,且随温度升高下降值增大。在700 ℃时,屈服强度下降7%,对应的小角度晶界的比例下降6.8%,位错密度下降3.1×1013 m-2,再结晶晶粒比例增加5%;当温度为800 ℃时,屈服强度下降33%,对应的小角度晶界比例下降12%,位错密度下降5×1013 m-2,再结晶晶粒比例增加9%,其强度已经低于管材成型前板材的强度值,极易引起焊接接头的断裂失效。
Abstract:
Aiming at the heat affected zone softening in the welded joint of low-carbon microalloyed steel pipe,based on GLEEBLE-3500,EBSD and TEM,the deformation strengthening in the process of tube making and the influence of two-phase welding temperature on microstructure and properties were studied.The results show that the ratio of low angle grain boundary and dislocation density increase significantly during the plastic deformation.When the amount of deformation is 9.8%,the ratio of low angle grain boundary increases 27.5%,dislocation density increases 5.04×1013 m-2,yield strength increases 22%,and tensile strength increases 11%.However,due to the influence of welding thermal cycle,the strength in the two-phase welding temperature decreases obviously,and the decrease value increased with the rise of temperature.The yield strength decreased by 7%,the proportion of low angle grain boundary decreased by 6.8%,the dislocation density decreased by 3.1×1013 m-2,and the proportion of recrystallized grains increased by 5%,at temperature of 700 ℃.It should be noted that when the temperature is 800 ℃,the yield strength decreases by 33%,the proportion of low angle grain boundary decreases by 12%,the dislocation density decreases by 5×1013 m-2,and the proportion of recrystallized grain increases by 9%.Its strength is lower than that of the plate before the tube forming,which is easy to cause the fracture failure of the welded joint.

参考文献/References:

[1]毕宗岳.管线钢管焊接技术[M].北京:石油工业出版社,2013:12-15.[2]王有铭,李曼云,韦光.钢材的控制轧制和控制冷却[M].北京:冶金工业出版社,2009:1-7.[3]毕宗岳.新一代大输量油气管材制造关键技术研究进展[J].焊管,2019,41(7):10-25.[4]李亚江.高强钢的焊接[M].北京:冶金工业出版社,2010:12-18.[5]毕宗岳,杨军,牛辉,等.X90管线钢管埋弧焊缝组织与性能分析[J].焊接学报,2018,39(10):35-40,130.[6]毕宗岳,杨军,牛辉,等.X90高强管线钢母材及焊缝的冲击韧性[J].材料热处理学报,2017,38(10):72-79.[7]由宗彬,李烨铮,刘宇.焊接峰值温度对X80管线钢焊接接头热影响区性能影响的热模拟[J].机械工程材料,2016,40(9):54-57,61.[8]刘斌,毕宗岳,牛辉,等.不同焊接热输入对X90管线钢CGHAZ组织与性能的影响[J].焊管,2019,42(4):25-29.[9]陈小伟,王旭,王立柱,等.X80管线钢焊接热影响区软化问题研究[J].焊管,2017,40(6):1-8.[10]董现春,张楠,陈延清,等.高Ti、Nb析出强化高强钢接头强度及焊接热影响区软化行为分析[J].焊接学报,2012,33(11):72-76,117.[11]PANTLEON W.Resolving the geometrically necessary dislocation content by conventional electron backscattering diffraction[J].Scripta Materialia,2008,58(11):994-997.[12]PANTLEON W.Retrieving orientation correlations in deformation structures from orientation maps[J].Materials Science and Technology,2005,21(12):1392-1396.[13]HE W,MA W,PANTLEON W.Microstructure of individual grains in cold-rolled aluminium from orientation inhomogeneities resolved by electron backscattering diffraction[J].Materials Science and Engineering:A,2008,494(1-2):21-27.[14]TIPTON S M.Coiled tubing surface characteristics and effects on fatigue behavior[J].SPE Drilling & Completion,2000,15(1):63-66.

相似文献/References:

[1]刘继英,Albert Sedlmaier.异型钢管成型的计算机辅助设计[J].焊管,2008,31(2):53.[doi:1001-3938(2008)02-0053-02]
 LIU Ji-ying,Albert Sedlmaier.Computer Aided Design for Rollforming Shaped Tube[J].,2008,31(7):53.[doi:1001-3938(2008)02-0053-02]
[2]侯永利,曹文军.螺旋焊管成型缝“噘嘴”产生的原因及控制措施[J].焊管,2008,31(2):75.[doi:1001-3938(2008)02-0075-02]
 HOU Yong-li,CAO Wen-jun.Reason and Control Measure Occurred in Forming Weld? Protruding of Spiral Submerged Arc Welded Pipe[J].,2008,31(7):75.[doi:1001-3938(2008)02-0075-02]
[3]宗 波,王树人,王铁民,等.国产X80级螺旋埋弧焊管的试制[J].焊管,2008,31(6):39.[doi:1001-3938(2008)06-0039〖KG-*2〗-04]
 ZONG Bo,WANG Shu-ren,WANG Tie-min,et al.Trial Production of X80 Grade Helically Submerged Arc Welded Pipe in China[J].,2008,31(7):39.[doi:1001-3938(2008)06-0039〖KG-*2〗-04]
[4]张 军.方矩形焊管成型质量分析[J].焊管,2009,32(1):46.[doi:1001-3938(2009)01-0046-02]
 ZHANG Jun.Forming Quality Analysis on Rectangular Welded Pipe[J].,2009,32(7):46.[doi:1001-3938(2009)01-0046-02]
[5]李霄,熊庆人,石凯,等.焊管残余应力研究进展及展望[J].焊管,2009,32(7):12.[doi:1001-3938(2009)07-0012-06]
 LI Xiao,XIONG Qing-ren,SHI Kai,et al.Research Progress and Prospect of Residual Stress in Welded Pipe[J].,2009,32(7):12.[doi:1001-3938(2009)07-0012-06]
[6]刘德应,易建军,严绍书,等.X100大直径螺旋埋弧焊管的试制[J].焊管,2012,35(3):60.[doi:1001-3938(2012)03-0060-06]
 LIU De-ying,YI Jian-jun,YAN Shao-shu,et al.Trial-production of X100 Large Diameter SAW Pipe[J].,2012,35(7):60.[doi:1001-3938(2012)03-0060-06]
[7]孙 宏 编译.具有塑性各向异性的高强度UOE钢管成型与屈曲仿真[J].焊管,2013,36(11):63.[doi:1001-3938(2013)11-0063-08]
 Translated by SUN Hong.Forming and Buckling Simulation on High-strength UOE Pipe with Plastic Anisotropy[J].,2013,36(7):63.[doi:1001-3938(2013)11-0063-08]
[8]陈 斌,蒋道顶.直缝焊管短成型工艺[J].焊管,2014,37(1):42.[doi:1001-3938(2014)01-0042-03]
 CHEN Bin,JIANG Daoding.Short Forming Process of Longitudinal Welded Pipe[J].,2014,37(7):42.[doi:1001-3938(2014)01-0042-03]
[9]肖国章,高 霞,库宏刚.螺旋埋弧焊管的残余应力形成及控制措施[J].焊管,2014,37(11):68.[doi:1001-3938(2014)11-0068-05]
 GAO Xia,XIAO Guozhang,KU Honggang.Residual Stress Formation of Spiral Submerged Arc Welded (SAW) Pipe and Control Measures[J].,2014,37(7):68.[doi:1001-3938(2014)11-0068-05]
[10]谢 祎.超薄壁钛焊管制造工艺研究*[J].焊管,2016,39(5):44.[doi:10.19291/j.cnki.1001-3938.2016.05.008]
 XIE Yi.Technology Research of Ultra-thin Wall Titanium Tubes[J].,2016,39(7):44.[doi:10.19291/j.cnki.1001-3938.2016.05.008]

备注/Memo

备注/Memo:
收稿日期:2022-05-16基金项目: 国家重点研发计划项目“高应变海洋管线管研制”(项目编号2018YFC0310300)。作者简介:毕宗岳 (1962—),工学博士,宝鸡石油钢管有限责任公司首席技术专家,主要从事油气管材开发及焊接技术研究工作,发表论文200余篇。
更新日期/Last Update: 2022-07-29