采用正交实验法,通过等离子电弧炉制备添加不同含量Ni,Mo和Cu元素的13Cr不锈钢,研究合金的微观组织、结构特征以及饱和CO2油田采出液中的腐蚀电化学和高温高压浸泡腐蚀行为.结果表明:合金组织主要为马氏体和铁素体,随Ni,Mo和Cu含量不同而变化;Ni4Mo 1.2Cu14合金中马氏体含量较高,硬度达到296.48HV1.0;所有合金均呈现出明显钝化特征,Ni4 Mo12Cu14合金具有最低的维钝电流密度2.99×10 6A·cm 2和最高的点蚀电位0.35V(SCE),钝化稳定性最高;制备合金在高温高压下的浸泡腐蚀速率为0.041～0.053mm/a,低于0.076mm/a;Ni,Mo和Cu元素加入提高了合金的自腐蚀电位,降低了腐蚀倾向,其中Cu对于改善合金耐蚀性能作用最为突出.
参考文献
| [1] | DENPO K;OGAWA H .Fluid flow effects on CO2 corrosion resistance of oil well materials[J].Corrosion,1993,49(06):442-449. |
| [2] | MASAMURA K;HASHIZUME S;INOHARA Y.Estimation models of corrosion rates of 13Cr alloys in CO2 environments[A].San Antonio,Tx:NACE International,1999:583. |
| [3] | 林冠发,相建民,常泽亮,白真权.3种13Cr110钢高温高压CO2腐蚀行为对比研究[J].装备环境工程,2008(05):1-4,48. |
| [4] | 周波,崔润炯,刘建中.增强型13Cr钢抗CO2腐蚀套管的研制[J].钢管,2006(06):22-26. |
| [5] | 刘艳朝,赵国仙,薛艳,牛坤.超级13Cr钢在高温高压下的抗CO2腐蚀性能[J].全面腐蚀控制,2011(11):29-34. |
| [6] | H. Zhang;Y.L. Zhao;Z.D. Jiang .Effects of temperature on the corrosion behavior of 13Cr martensitic stainless steel during exposure to CO_2 and Cl~- environment[J].Materials Letters,2005(27):3370-3374. |
| [7] | IKEDA A;UEDA M.Effect of microstructure and Cr content in steel on CO2 corrosion[A].Denver,CO:NACE International,1996 |
| [8] | T. Hara;H. Asahi;A. Kawakami;A. Takahashi .Effects of alloying elements on carbon dioxide corrosion in 13% to 20% chromium-containing steels[J].Corrosion: The Journal of Science and Engineering,2000(4):419-428. |
| [9] | Hara T.;Asahi H. .Effect of Flow Velocity on Carbon Dioxide Corrosion Behavior in Oil and Gas Environments[J].Corrosion: The Journal of Science and Engineering,2000(8):860-866. |
| [10] | ASAHI H;HARA T;SUGIYAMA M.Corrosion performance of modified 13％ Cr OCTG[A].Denver,CO:NACE International,1996 |
| [11] | 田世昌 .奥氏体耐蚀合金的应用[J].石油化工设备技术,1994,15(05):43-45. |
| [12] | 徐金璋.合金元素和组织对马氏体不锈钢的耐蚀性和硬度的影响[J].上海钢研,2001(02):40-44. |
| [13] | Jee-Yong Park;Yong-Soo Park .The effects of heat-treatment parameters on corrosion resistance and phase transformations of 14Cr-3Mo martensitic stainless steel[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2007(1/2):1131-1134. |
| [14] | 刘亚娟,吕祥鸿,赵国仙,陈长风,薛艳.超级13Cr马氏体不锈钢在入井流体与产出流体环境中的腐蚀行为研究[J].材料工程,2012(10):17-21,47. |
| [15] | 吕祥鸿,赵国仙,王宇,张建兵,谢凯意.超级13Cr马氏体不锈钢抗SSC性能研究[J].材料工程,2011(02):17-21,25. |
| [16] | L. BERES .Proposed Modification to Schaeffler Diagram for Chrome Equivalents and Carbon for More Accurate Prediction of Martensite Content[J].Welding Journal,1998(7):273s-276s. |
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