高文娇,谭华,韩冬,邓博,李劲,蒋益明

• 1:复旦大学材料科学系

摘要(Abstract)：

用草酸腐刻、双环动电位电化学再活化(DL-EPR)及电化学阻抗谱(EIS)3种方法评价了不同温度(550～800℃)退火处理4 h后Incoloy800合金的晶间腐蚀敏感性,研究了退火温度对Incoloy800合金晶间腐蚀敏感性的影响。分别用光学显微镜(OPM)和扫描电子显微镜(SEM)观察了敏化样品经草酸腐刻后的微观结构和DL-EPR测试后的表面形貌。结果表明3种方法评价结果一致,随着退火温度升高,Incoloy800合金的敏化度先增大后减小,在650和700℃下退火4 h后高度敏化,再活化率Ra均大于30%,而在800℃退火4 h后未被敏化。

关键词(KeyWords)： Incoloy800合金;晶间腐蚀;敏化;草酸腐刻;双环动电位电化学再活化(DL-EPR);电化学阻抗谱

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(51131008,50871031,51071049,51134010);; 上海市高新技术产业化重点项目

作者(Author): 高文娇,谭华,韩冬,邓博,李劲,蒋益明

DOI: 10.13289/j.issn.1009-6264.2012.02.009

参考文献(References)：

• [1]Fulger M,Ohai D.Oxidation behavior of incoloy 800 under simulated supercritical water conditions[J].Nucl J Mater,2009,385:288-293.
• [2]Esteban G A,Perujo A.Diffusive transport parameters and surface rate constants of deuterium in Incoloy 800[J].Nucl J Mater,2002,300:1-6.
• [3]Paul A R,Kaimal N G K.Migration of carbon in Incoloy 800[J].Mater Chem Phys,1998,53:189-194.
• [4]Dehmolaei R,Shamanian M.Microstructural changes and mechanical properties of Incoloy 800 after 15 years service[J].Mater Character,2009,60:246-250.
• [5]桂立丰,吴民达,赵源.机械工程材料测试手册[M].辽宁:科学技术出版社,2002.
• [6]Sahlaoui H,Makhlouf K.Effects of ageing conditions on the precipitates evolution,chromium depletion and intergranular corrosion susceptibility ofAISI 316L:experimental and modeling results[J].Mater Sci Eng A,2004,372:98-108.
• [7]Aydogu G H,Adinol M K.Determination of susceptibility to intergranular corrosion and electrochemical reactivation behaviour of AISI 316L typestainless steel[J].Corros Sci,2006,48:3565-3583.
• [8]Green S J,Paine P N.Materials performance in nuclear pressurized water reactor steam generators[J].Nucl Technol,1981,55:10-29.
• [9]Chafely J E,Roberts D J.Steam-generator materials performance in high-temperature gas-cooled reactors[J].Nucl Technol,1981,55(1):37-49.
• [10]Buhler H E,Gerlach L,Greven O,et al.The electrochemical reactivation test(ERT)to detect the susceptibility to intergranular corrosion[J].Corros Sci,2003,45:2325-2336.
• [11]Majidi A P,Streicher M A.The double loop reactivation method for detecting sensitization in AISI 304 stainless steels[J].Corrosion,1984,40:584-593.
• [12]Lopez N,Cid M,Puiggali M,et al.Application of double loop electrochemical potentiodynamic reactivation test to austenitic and duplex stainlesssteels[J].Mater Sci Eng A,1997,229:123-128.
• [13]高中平,陈范才,赵常就.动电位再活化法评价晶间腐蚀敏感性的各种判据[J].四川化工与腐蚀控制,1999,2(3):40-44.Gao Zhong-ping,Chen Fan-cai,Zhao Chang-jiu.Various criteria for electrochemical potentiodynamic reactivation method on the susceptibility tointergranular corrosion[J].Sichuan Chem Corros Control,1999,2(3):40-44.
• [14]金维松,郎宇平,容凡,等.EPR法评价奥氏体不锈钢晶间腐蚀敏感性的研究[J].中国腐蚀与防护学报,2007,27(1):54-60.Jin W S,Lang Y P,Rong F,et al.Research of EPR on the susceptibility to intergranular attack of austenitic stainless steel[J].Chin Soc Corros Prot,2007,27(1):54-60.
• [15]徐菊良,邓博,孙涛,等.DL-EPR法评价2205双相不锈钢晶间腐蚀敏感性[J].金属学报,2010,46(3):380-384.Xu J L,Deng B,Sun T,et al.Evaluation of the susceptibility to intergranular attack of 2205 Duplex stainless steel by DL-EPR method[J].ActaMetall Sin,2010,46(3):380-384.
• [16]Refaey S A M,Taha F,Hasanin T H A,Passivation and pitting corrosion of nanostructured Sn-Ni alloy in NaCl solutions[J].Electrochim Acta,2006,51:2942-2948.
• [17]Lima-Neto P de,Farias J P,Herculano L F G,et al.Determination of the sensitized zone extension in welded AISI 304 stainless steel using non-destructive electrochemical techniques[J].Corros Sci,2008,50:1149-1155.
• [18]Huang A C,Chang Z Y,Chen C S.The electrochemical behavior of austenitic stainless steel with different degrees of sensitization in the transpassivepotential region in 1 M H2SO4 containing chloride[J].Corros Sci,2004,46:1501-1513.
• [19]曹楚南,张鉴清.电化学阻抗谱导论[M].北京:科学出版社,2002.
• [20]Gaudett M A,Scully J R.Distributions of Cr depletion levels in sensitized AISI 304 stainless steel and its implications concerning intergranularcorrosion phenomena[J].J Electrochem Soc,1993,140:3425-3435.
• [21]Osozawa K,Bohnenkamp K.Potentiostatic study on the intergranular corrosion of an austenitic chromium-nickel stainless steel[J].Corros Sci,1966,6:421-433.
• [22]Pardo A,Merino M C.Influence of Ti,C and N concentration on the intergranular corrosion behaviour of AISI 316Ti and 321 stainless steels[J].Acta Mater,2007,55:2239-2251.
• [23]Hall E L,Briant C L.Chromium depletion in the vicinity of carbides in sensitized austenitic stainless steels[J].Metall Trans A,1984,15:793-811.
• [24]David L,Reichert.A modified double loop EPR technique for detection of sensitization in cast stainless steel[J].J Electrochem Soc,1990,137:411-413.
• [25]Zhang L,Kamada Y,Kikuchi H,et al.Magnetic transition temperatures of some model alloys for simulating radiation induced segregation in austeniticstainless steel[J].Journal of Magnetism and Magnetic Materials,2004,271:402-408.

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