| 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 |
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| 引用本文： | 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,2018,47(3):904-909. |
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| 作者姓名： | 杨世洲 李春福 李辉 文平 |
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| 作者单位： | 西南石油大学,西南石油大学,四川建筑职业技术学院,西南石油大学 |
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| 基金项目： | 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) |
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| 摘 要： | 摘要:采用C型环实验研究了2205双相不锈钢在饱和H2S环境下的应力腐蚀行为及开裂机理。研究结果表明,2205双相不锈钢在NACE标准A溶液中有良好的抗应力腐蚀能力。通过OM、SEM、EDS及电化学手段分析得出2205双相不锈钢的应力腐蚀开裂经历了表面点蚀,蚀坑形成,H2S解离,H原子吸附并从蚀坑位置扩散进入金属基体,在金属基体中聚集,通过氢致开裂机制导致裂纹萌生,并逐渐扩展。
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| 关 键 词： | 2205双相不锈钢 C型环试验 H2S应力腐蚀 氢致开裂 |
| 收稿时间： | 2016/1/13 0:00:00 |
| 修稿时间： | 2016/3/11 0:00:00 |
Study on Stress Corrosion Behavior and Cracking Mechanism of 2205 Duplex Stainless Steel in Acidic H2S Environment |
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| Yang Shizhou,Li Chunfu,Li Hui and 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. |
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| Authors: | Yang Shizhou Li Chunfu Li Hui and Wen Ping |
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| Affiliation: | Southwest Petroleum University,Southwest Petroleum University,Sichuan College of Architectural Technology,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. |
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| Keywords: | 2205 duplex stainless steel C-rings stress corrosion cracking test H2S stress corrosion cracking hydrogen induced cracking |
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