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杨世洲,李春福,李辉,文平.2205双相不锈钢在酸性H2S环境下的应力腐蚀行为及开裂机理研究[J].稀有金属材料与工程(英文),2018,47(3):904~909.[Yang Shizhou,Li Chunfu,Li Hui,Wen Ping.Study on Stress Corrosion Behavior and Cracking Mechanism of 2205 Duplex Stainless Steel in Acidic H2S Environment[J].Rare Metal Materials and Engineering,2018,47(3):904~909.]
Study on Stress Corrosion Behavior and Cracking Mechanism of 2205 Duplex Stainless Steel in Acidic H2S Environment
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Received:January 13, 2016  Revised:March 11, 2016
DOI:
Key words: 2205 duplex stainless steel  C-rings stress corrosion cracking test  H2S stress corrosion cracking  hydrogen induced cracking
Foundation item:国家863高新技术研究发展计划项目(2006AA06A105) ;西南石油大学油气藏地质及开发工程国家重点实验室基金(PLN0609)
Author NameAffiliationE-mail
Yang Shizhou Southwest Petroleum University yangshizhou@163.com 
Li Chunfu Southwest Petroleum University 406954188@qq.com 
Li Hui Sichuan College of Architectural Technology  
Wen Ping Southwest Petroleum University  
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Abstract:
      Stess corrosion behavior and cracking mechanism of 2205 duplex stainless steel (DSS) in saturated H2S environment were studied by using C-rings Stress Corrosion Cracking Test. The results showed that 2205 DSS has good resistance to stress corrosion in Test Solution A of NACE Standard. Through OM, SEM, EDS and electrochemical analysis, stress corrosion cracking in 2205 DSS undergoes the following procedures: pitting corrosion on surface, formation of corrosion hole, dissociation of H2S, absorption of H atoms and their diffusion from corrosion hole to inner metal, then gathering at some place in matix, finally initiation of cracks by hydrogen induced cracking mechanism and their gradual propagation.