采用钨极氩弧焊和手工电弧焊焊接316L/X65双金属复合管。利用光学显微镜、能谱仪、扫描电镜、力学性能测试及电化学测试等分析手段研究了复合管焊接接头的微观结构、化学成分、力学性能及电化学腐蚀性能。结果表明，过渡层焊缝的化学成分受到稀释较小，过渡层熔合线附近出现了元素迁移，不锈钢层焊缝与母材的化学成分基本一致；扩散层为类马氏体＋残留奥氏体，过渡层和不锈钢层焊缝均为奥氏体＋少量铁素体；在试验参数下，焊接接头各项力学性能优良、无缺陷；覆层焊缝与母材的电化学腐蚀性能相差极小。
316L/X65 bimetal clad pipe was welded by GTAW and SMAW. The microstructure,chemical composition, mechanical properties and electrochemical corrosion behavior of welding joints were investigated by OM,EDS,SEM, hardness test,tensile test,impact test and electrochemical test. The results show that the chemical composition of transi-tion welding seam is little diluted,and elemental migration appears near the fusion line of transition weld seam. Welding seam and base material have the same chemical composition in stainless steel layer. The microstructure of transition lay-er is characterized by the martensite-like and retained austenite;the transition layer and stainless steel layer contain aus-tenite and a little ferrite. The defect free joint is produced and performed well under the experimental parameters. The dif-ference of electrochemical corrosion properties between weld seam and base material in stainless steel layer is very little.
参考文献
| [1] | M. B. Kermani;A. Morshed.Carbon Dioxide Corrosion in Oil and Gas Production -- A Compendium[J].Corrosion: The Journal of Science and Engineering,20038(8):659-683. |
| [2] | 路民旭;白真权;赵新伟;赵国仙;罗金恒;陈长风.油气采集储运中的腐蚀现状及典型案例[J].腐蚀与防护,2002(3):105-113. |
| [3] | F. M. Song.A comprehensive model for predicting CO_2 corrosion rate in oil and gas production and transportation systems[J].Electrochimica Acta,20103(3):689-700. |
| [4] | 曾德智;杜清松;谷坛;黄黎明;张智;施太和.双金属复合管防腐技术研究进展[J].油气田地面工程,2008(12):64-65. |
| [5] | 梁根生;颜超;杨刚;代维;张玉蕾;胡仕庄.雅克拉凝析气田单井集输管道抗腐蚀材质优选[J].腐蚀与防护,2011(09):753-755. |
| [6] | 魏世丞;韩庆;魏绪钧.复合材料管研究现状[J].材料导报,2003(9):64-67. |
| [7] | 范兆廷 .新型输油气双金属复合管道腐蚀及可靠性研究[D].重庆大学,2013. |
| [8] | 李发根;魏斌;邵晓东;蔡锐.高腐蚀性油气田用双金属复合管[J].油气储运,2010(5):359-362. |
| [9] | 吕世雄;王廷;冯吉才.20G/316L双金属复合管弧焊接头组织与性能[J].焊接学报,2009(4):93-96. |
| [10] | 欧平;孙坚;张茂龙;魏一.SA508/316L异种钢焊接接头的显微组织[J].材料热处理学报,2013(10):132-138. |
| [11] | 李立英;王成;韩彬;蒲江涛.L415/316L复合管免充氩焊接接头组织与性能[J].材料热处理学报,2014(1):125-130. |
| [12] | Cleiton C. Silva;Helio C. de Miranda;Hosiberto B. de Sant'Ana.Microstructure, hardness and petroleum corrosion evaluation of 316L/AWS E309MoL-16 weld metal[J].Materials Characterization,20094(4):346-352. |
| [13] | Changheui Jang;Jounghoon Lee;Jong Sung Kim;Tae Eun Jin.Mechanical property variation within Inconel 82/182 dissimilar metal weld between low alloy steel and 316 stainless steel[J].International Journal of Pressure Vessels and Piping,20089(9):635-646. |
| [14] | Shaogang Wang;Qihui Ma;Yan Li.Characterization of microstructure, mechanical properties and corrosion resistance of dissimilar welded joint between 2205 duplex stainless steel and 16MnR[J].Materials & design,20112(2):831-837. |
| [15] | 王文先;王一峰;刘满才;程福昌;吴伟.1Cr18Ni9Ti+Q235复合钢板对接焊缝组织和抗腐蚀性能分析[J].焊接学报,2010(6):89-92. |
| [16] | 王能利;张希艳;潘希德;薛锦.多层焊对A/P异种钢复合管SMAW接头组织及性能的影响[J].焊接学报,2007(9):51-54. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%