X70钢焊接接头在酸性溶液中的局部腐蚀SVET研究
SVET Characterization of Localized Corrosion of Welded X70 Pipeline Steel in Acid Solution
摘 要
采用SEM分析了符合焊接工艺规范的X70管线钢焊接接头部位的组织, 并采用扫描振动参比电极技术(SVET)研究了X70钢焊接接头在鹰潭酸性土壤模拟溶液中的局部腐蚀行为。结果表明, X70钢焊接接头热影响区在鹰潭酸性土壤模拟溶液中的腐蚀电流密度最大, 焊缝和母材靠近热影响区的区域电流密度次之, 母材的腐蚀电流密度随着与热影响区距离的增大而降低。
酸性溶液
局部腐蚀
扫描振动参比电极技术(SVET)
X70 steel weld joint
acid solution
localized corrosion
scanning vibrating electrode technique(SVET)
Abstract
The mophology of X70 pipeline steel weld jiont was investigated by SEM and its localized corrosion behaviors in Yingtan acid simulation solution were studied by scanning vibrating electrode technique (SVET). It is demonstrated that there was a higher corrosion current density on the surface of heat affected zone (HAZ) than on weld metal and base metal (BM). The current density of BM decreased with the increase of distance from HAZ.
中图分类号 TG174
所属栏目 试验研究
基金项目 国家自然科学基金(50971016, 50901041); 中国博士后科学基金(20100480196)
收稿日期 2012/2/20
修改稿日期
网络出版日期
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备注王力伟, 博士研究生,
引用该论文: WANG Li-wei,DU Cui-wei,LIU Zhi-yong,LI Xiao-gang. SVET Characterization of Localized Corrosion of Welded X70 Pipeline Steel in Acid Solution[J]. Corrosion & Protection, 2012, 33(11): 935
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参考文献
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【25】Brautigan F C. Selective corrosion of weld metal in high Nickel alloys and stainless steels[J]. Corrosion, 1975, 31(3):101-107.
【26】Dugstad A, Hemmer H, Seiersten M. Effect of steel microstructure on corrosion rate and protective iron carbonate film formation[J]. Corrosion, 2001, 57(4):369-374.
【27】Zhang G A, Cheng Y F. Micro-electrochemical characterization of corrosion of welded X70 pipeline steel in near-neutral pH solution[J]. Corrosion Science, 2009, 51:1714-1724.
【28】Zhang G A, Cheng Y F. Micro-electrochemical characterization and Mott-Schottky analysis of corrosion of welded X70 pipeline steel in carbonate/bicarbonate solution[J]. Electrochimica Acta, 2009, 55:316-324.
【2】Endo S, Nagae M, Suga M, et al. Development and mass production of X80 linepipe[C]//Barbas S T, Book No.G00616, 1991:63.
【3】Hiroshi T. High strength X80 and X100 line pipe steels[C]//Queensland Australia:1996 International Convention Pipelines, 1996:26.
【4】GrafM K, Hillenbrand H G, Niederhoff K A. Production of large-diameter linepipe and bends for the world′s first long-range pipeline in grade X80(GRS 550)[C]//Houston, Texas, PRCEPRG 9th Biennial Joint Technical Meeting on Line Pipe Research, 1993:11.
【5】Todd S J. The alliance pipeline-A design shift in long distance gas transmission[C]//ASME Calgary, Canada:International pipeline conference, 1998.
【6】李鹤林. 天然气输送钢管研究与应用中的几个热点问题[J]. 焊管, 2003, 23(3):43-46.
【7】Simoes A M, Bastos A C, Ferrira M G, et al. Use of SVET and SECM to study the galvanic corrosion of an iron-zinc cell[J]. Corrosion Science, 2007, 49:726-739.
【8】Souto R M, Gonzalez-Garcia Y, Bastos A C, et al. Investigating corrosion processes in the micrometric range:a SVET study of the galvanic corrosion of zinc coupled with iron[J]. Corrosion Science, 2007, 49:4568-4580.
【9】Kiran B Deshpande. Experimental investigation of galvanic corrosion:Comparison between SVET and immersion techniques[J]. Corrosion Science, 2010, 52:2819-2826.
【10】Kiran B Deshpande. Validated numerical modeling of galvanic corrosion for couples: Magnesium alloy (AE44)-mild steel and AE44-aluminium alloy (AA6063) in brine solution[J]. Corrosion Science, 2010, 52:3514-3522.
【11】Akid R, Mills D J. A comparison between conventional macroscopic and novel microscopic scanning electrochemical methods to evaluate galvanic corrosion[J]. Corrosion Science, 2001, 43:1203-1216.
【12】Dzib-Pérez L, González-Sánchez J, Pérez T, et al. The role of solidification rate in the corrosion resistance of a directionally solidified novel aluminium-lathanum alloy[J]. Scripta Materialia, 2006, 55:255-258.
【13】Kiran B Deshpande. Numerical modeling of micro-galvanic corrosion[J]. Electrochimica Acta, 2011, 56(4):1737-1745.
【14】Murer Nicolas, Oltra Roland, Vuillemin Bruno, et al. Numerical modeling of galvanic coupling in aluminium alloys:A discussion on the application of local probe techniques[J]. Corrosion Science, 2010, 52:130-139.
【15】Liu Z Y, Cheng Y F. In-situ characterization of the electrochemistry of grain and grain boundary of an X70 steel in a near-neutral pH solution[J]. Electrochemistry Communications, 2010(12):936-938.
【16】刘智勇, 翟国丽, 杜翠薇, 等. X70钢在酸性土壤模拟溶液中的应力腐蚀行为[J]. 金属学报, 2008, 44(2):209-214.
【17】Franklin M J, White D C, Isaacs H S. Pitting corrosion by bacteria on carbon steel, determined by the scanning vibrating electrode technique[J]. Corrosion Science, 1991, 32:945-952.
【18】Isaacs H S, Davenport A J, Shipley A. The electrochemical response of steel to the presence of dissolved cerium[J]. Journal of the Electrochemical Society, 1991, 138(2):390-393.
【19】Isaacs H S. The measurement of the galvanic corrosion of soldered copper using the scanning vibrating electrode technique[J]. Corrosion Science, 1988(28):547-558.
【20】Trethewey B K R, Sargeant D A, Marsh D J, et al. Applications of the scanning reference electrode technique to localized corrosion[J]. Corrosion Science, 1993, 35:127-134.
【21】Bockris J O′M, Drazic D, Despic A R. The electrode kinetics of the deposition and dissolution of iron[J]. Electrtochimica Acta, 1961, 4(2-4):325.
【22】Nesic S, Postlethwaite J, Olsen S. An electrochemical model for prediction of corrosion of mild steel in aqueous carbon dioxide solutions[J]. Corrosion, 1996, 52(4):280-287.
【23】Lee S, Kim B, Kwon D. Correlation of microstructure and fracture properties in weld heat-affected zones of thermomechanically controlled processed steels[J]. Metal Material Transaction (A), 1992, 23(10):2803-2810.
【24】Shanmugam S, Ramisetti N K, Misra R D K. Microstructure and high strength-toughness combination of a new 700 MPa Nb-microalloyed pipeline steel[J]. Materials Science and Engineering A, 2008, 478:26-32.
【25】Brautigan F C. Selective corrosion of weld metal in high Nickel alloys and stainless steels[J]. Corrosion, 1975, 31(3):101-107.
【26】Dugstad A, Hemmer H, Seiersten M. Effect of steel microstructure on corrosion rate and protective iron carbonate film formation[J]. Corrosion, 2001, 57(4):369-374.
【27】Zhang G A, Cheng Y F. Micro-electrochemical characterization of corrosion of welded X70 pipeline steel in near-neutral pH solution[J]. Corrosion Science, 2009, 51:1714-1724.
【28】Zhang G A, Cheng Y F. Micro-electrochemical characterization and Mott-Schottky analysis of corrosion of welded X70 pipeline steel in carbonate/bicarbonate solution[J]. Electrochimica Acta, 2009, 55:316-324.
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