温度对X90管线钢及其焊缝电化学腐蚀性能的影响
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摘要
为了明确X90钢的腐蚀变化规律,利用电化学阻抗技术(EIS)和动电位极化测试技术,研究了X90管线钢母材及其焊缝在不同温度下的电化学腐蚀行为。结果表明:在不同温度下,随着温度的升高,X90管线钢母材及其焊缝越容易发生腐蚀,电化学阻抗逐渐减小;母材与焊缝相比,焊缝在溶液中更容易发生腐蚀,且电化学阻抗值小于母材的。
In order to study the corrosion variation law of X90 steel,the electrochemical corrosion behaviors of the base alloy and weld material of X90 steel at different temperatures were studied by means of the electrochemical impedance spectroscopy( EIS) and polarization curves. Results showed when the temperature was improved,the corrosion of X90 pipeline steel and its weld occurred more easily,and the electrochemical impedance decreased gradually. Meanwhile,in the comparison of the base alloy,the weld metal was easier to be corroded in the solution,and the electrochemical impedance was smaller than that of the base metal.
In order to study the corrosion variation law of X90 steel,the electrochemical corrosion behaviors of the base alloy and weld material of X90 steel at different temperatures were studied by means of the electrochemical impedance spectroscopy( EIS) and polarization curves. Results showed when the temperature was improved,the corrosion of X90 pipeline steel and its weld occurred more easily,and the electrochemical impedance decreased gradually. Meanwhile,in the comparison of the base alloy,the weld metal was easier to be corroded in the solution,and the electrochemical impedance was smaller than that of the base metal.
引文
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[13] ROCCHINI G. Evaluation of the electrochemical parameters by means of seres expansion[J]. Corrosion Science,1994,36(8):1 347-1 361.
[2]李延丰,王庆强,王庆国,等. X90钢级螺旋缝埋弧焊管的研制结果及分析[J].钢管,2011,40(2):25-28.
[3] TANGURY B,LUU T T,PERRIN G,et al.Plastic and damage behavior of a high strength X100 pipeline steel:Experiments and modeling[J]. International Journal of Pressure Vessels and Piping,2008,85(5):322-335.
[4] YAKUBTSOV I A,PORUKS P,BOYD J D. Microstructure and mechanical properties of bainitic low carbon high strength plate steels[J].Materials Science and Engineering:A,2008,480(1/2):109-116.
[5]李鹤林,吉玲康.西气东输二线高强韧性焊管及保障管道安全运行的关键技术[J].世界钢铁,2009,9(1):56-64.
[6]黄晓辉,张冬冬,符利兵,等. X90螺旋埋弧焊管抗硫化氢性能的研究[J].北京联合大学学报,2014,28(4):81-85.
[7] NAGAYAMA H,NAKAMURA J,HAMADA M,et al. Development of double joint welding procedure for X90 grade seamless pipe in rise application:SPE Offshore Technology Conference[C]. Houston:[s.n.],2013.
[8]钱亚军,肖文勇,刘理,等.大直径X90M管道钢的开发与试制[J].焊管,2014,37(1):22-26.
[9]章传国,郑磊,张备,等. X90大口径UOE焊管的开发研究[J].宝钢技术,2013(3):30-34.
[10]刘生,张志军,李玉卓,等.天然气输送管件三通用X90钢板的开发[J].宽厚板,2014,20(6):1-5.
[11] ZHAOW G,WANG W,CHEN S H,et al. Effect of simulated welding thermal cycle on microstructure and mechanical properties of X90 pipeline steel[J]. Materials Science and Engineering A,2011,528(24):7 417-7 422.
[12]夏佃秀,王学林,李秀程,等. X90级别第三代管道钢的力学性能与组织特征[J].金属学报,2013,49(3):271-276.
[13] ROCCHINI G. Evaluation of the electrochemical parameters by means of seres expansion[J]. Corrosion Science,1994,36(8):1 347-1 361.