王峰,王立贤,刘智勇,艾池.TP110TS 油管钢在酸性气田环境中的应力腐蚀行为研究[J].表面技术,2015,44(3):57-62,73.
WANG Feng,WANG Li-xian,LIU Zhi-yong,AI Chi.Study on Stress Corrosion Behavior of TP110TS Oil Pipeline Steel in the Sour Gas Field Environment[J].Surface Technology,2015,44(3):57-62,73 |
| TP110TS 油管钢在酸性气田环境中的应力腐蚀行为研究 |
| Study on Stress Corrosion Behavior of TP110TS Oil Pipeline Steel in the Sour Gas Field Environment |
| 投稿时间：2014-11-02 修订日期：2015-03-20 |
| DOI：10.16490/j.cnki.issn.1001-3660.2015.03.010 |
| 中文关键词: TP110TS 酸性气田 应力腐蚀 氢渗透 |
| 英文关键词:TP110TS sour gas field stress corrosion hydrogen permeation |
| 基金项目:国家高技术研究发展计划(863 计划,2012AA040105);国家科技基础性工作专项(2012FY113000) |
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| Author | Institution |
| WANG Feng | 1. College of Petroleum Engineering, Northeast Petroleum University, Daqing 163318, China;2. Songyuan Gas Production Plant, Jilin Oil Field Company of China Oil, Songyuan 138000, China; |
| WANG Li-xian | Beijing Sj Environmental Protection and New Material Co. , Ltd, Beijing 100080, China |
| LIU Zhi-yong | Corrosion and Protection Center, University of Science and Technology Beijing, Beijing 100083, China |
| AI Chi | College of Petroleum Engineering, Northeast Petroleum University, Daqing 163318, China |
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| 中文摘要: |
| 目的 研究 TP110TS 油管钢在酸性气田环境中的应力腐蚀开裂行为。 方法 通过模拟酸性气田环境,采用动电位极化法、电化学阻抗法、电化学充氢、恒载荷浸泡试验和慢应变速率拉伸试验等方法进行研究。 结果 在酸性气田环境中,100 ℃时 TP110TS 钢中的含氢量大幅度降低,氢脆作用减弱,导致其应力腐蚀敏感性低于 60 ℃ 。 TP110TS 钢在 100 ℃的酸性气田环境中,当拉应力超过 70% σs 时才表现出一定的应力腐蚀敏感性,表明该材料在实际使用过程中应力水平应保持在 70% σs 以下,但当温度降低到 60 ℃ ,其安全应力门槛值要降为 50% σs。 结论 TP110TS 钢在酸性气田环境中的应力腐蚀机制是阳极溶解与氢脆的混合机制。 拉应力的存在会缩短 TP110TS 钢的耐腐蚀寿命,且拉应力越大,耐腐蚀寿命越短。 |
| 英文摘要: |
| Objective To study the stress corrosion cracking (SCC) behavior of TP110TS oil pipeline steel in the simulated sour gas field environment. Methods Potentiodynamic polarization, electrochemical impedance method, electrochemical hydrogen charging, constant load test methods such as immersion test of constant-loading specimen and slow strain rate tensile test were used for research in the simulated sour gas field environment. Results It showed that the amount of hydrogen in the TP110TS oil pipeline steel in the sour gas field environment was substantially decreased when the temperature was 100 ℃ , the hydrogen embrittlement effect was diminished, which resulted in the decreased stress corrosion sensitivity as compared to that at 60 ℃ . In the sour gas field environment with a temperature of 100 ℃ , the TP110TS steel showed some stress corrosion sensitivity only when the tensile stress on the steel exceeded 70% σs. It showed that the stress level of the material in the process of actual use should be kept below 70% σs. However, when the temperature was reduced to 60 ℃ , its security stress threshold value should be decreased to 50% σs. Conclusion The SCC mechanism of TP110TS oil pipeline steel in the sour gas field environment was mixed-controlled by both anodic dissolution (AD) and hydrogen-induced (HE), and the existence of the tensile stress shortened the corrosion life of the TP110TS steel and the greater the tensile stress was, the shorter the corrosion life became. |
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