T95油井管在酸性油气田环境中的应力腐蚀开裂行为及机制

doi:10.11902/1005.4537.2019.282

中国腐蚀与防护学报

2020, Vol. 40

Issue (5): 469-473 DOI: 10.11902/1005.4537.2019.282

海洋材料腐蚀与防护专辑

本期目录 | 过刊浏览

T95油井管在酸性油气田环境中的应力腐蚀开裂行为及机制

艾芳芳¹^,²(

), 陈义庆¹^,², 钟彬¹^,², 李琳¹^,², 高鹏¹^,², 伞宏宇¹^,², 苏显栋¹^,²

1 海洋装备用金属材料及其应用国家重点实验室鞍山 114009
2 鞍钢集团钢铁研究院鞍山 114009

Stress Corrosion Cracking Behavior of T95 Oil Well Pipe Steel in Sour Environment

AI Fangfang¹^,²(

), CHEN Yiqing¹^,², ZHONG Bin¹^,², LI Lin¹^,², GAO Peng¹^,², SHAN Hongyu¹^,², SU Xiandong¹^,²

1 State Key Laboratory of Material for Marine Equipment and Application, Anshan 114009, China
2 Ansteel Iron & Research Institute, Anshan 114009, China

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摘要:

通过光学显微镜和透射电镜分析T95钢第二相及合金元素对材料抗应力腐蚀开裂 (SCC) 性能影响。在不同酸性pH值条件下，结合动电位极化方法、恒载荷拉伸以及显微镜微观分析等方法，研究了T95油井管钢的应力腐蚀行为，并探究了其裂纹发生机制。结果表明，T95钢的SCC行为对pH值敏感，在pH值2.8~4.5之间存在一个临界值，溶液pH值低至2.8及以下时T95钢的SCC敏感性高；腐蚀溶液pH值降低，应力环断裂时间缩短，T95钢SCC敏感性增加。随着溶液pH值降低，环境输入H⁺电流 (I_H+) 增加，阴极反应加强，促进氢致开裂；H⁺在裂尖聚集，促进裂纹扩展，加强阳极溶解。T95钢的裂纹扩展受到阳极溶解和氢致开裂机制协同作用。

关键词 ：酸性介质, 应力腐蚀, 恒载荷拉伸, H₂S, 裂纹扩展, 油井管

Abstract：

The effect of second phases and alloying elements on stress corrosion cracking (SCC) behavior of oil well steel T95 in sour H₂S environments was investigated by means of electrochemical polarization measurement, constant tensile test, optical microscope and transmission microscope. Results showed that solutions of pH=2.3 and pH=2.8 were SCC sensitive environment to T95. With the decreasing pH, cracking time of the prestressed rings decreased, namely, the SCC sensitivity of T95 increased. With the decrease of pH, the I_H+ (input current from the environment) increased, while the cathode reaction was enhanced, as a consequence, the hydrogen induced cracking (HIC) occurred. Meanwhile, the aggregation of H⁺ on the crack tip might promote the crack expansion, accordingly, the anodic dissolution was enhanced. The crack propagation was controlled simultaneously by anodic dissolution (AD) and hydrogen embrittlement (HE) in the solutions of pH=2.3 and pH=2.8.

Key words： acid media stress corrosion constant load tensile H₂S crack propagation oil well pipe steel

收稿日期: 2019-12-31

ZTFLH:

TG172

通讯作者: 艾芳芳 E-mail: ansteelaff@163.com

Corresponding author: AI Fangfang E-mail: ansteelaff@163.com

作者简介: 艾芳芳

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引用本文:

艾芳芳, 陈义庆, 钟彬, 李琳, 高鹏, 伞宏宇, 苏显栋. T95油井管在酸性油气田环境中的应力腐蚀开裂行为及机制[J]. 中国腐蚀与防护学报, 2020, 40(5): 469-473.
Fangfang AI, Yiqing CHEN, Bin ZHONG, Lin LI, Peng GAO, Hongyu SHAN, Xiandong SU. Stress Corrosion Cracking Behavior of T95 Oil Well Pipe Steel in Sour Environment. Journal of Chinese Society for Corrosion and protection, 2020, 40(5): 469-473.

链接本文:

https://www.jcscp.org/CN/10.11902/1005.4537.2019.282 或 https://www.jcscp.org/CN/Y2020/V40/I5/469

图1 T95钢的金相组织

图2 T95钢组织和碳化物析出情况

图3 渗碳体分布和EDS分析

图4 3种pH值溶液中T95钢动电位极化曲线

图5 T95钢应力环实验结果

图6 T95钢空气中断口SEM形貌

图7 溶液pH值为2.8和2.3中T95钢断口SEM形貌

[1]	Zhao Y N. Stress corrosion experimental research of 304 austenitic stainless steel in H₂S+Cl^-+CO₂+H₂O complex medium condition [D]. Hangzhou: Zhejiang University of Technology, 2016
[1]	(赵亚楠. 304奥氏体不锈钢在H₂S+Cl^-+CO₂+H₂O复杂介质环境下的应力腐蚀试验研究 [D]. 杭州: 浙江工业大学, 2016)
[2]	Li M, Li X G, Chen H. A review on corrosion behavior and mechanism of metals in wet H₂S [J]. Corros. Sci. Prot. Technol., 2005, 17: 107
[2]	(李明, 李晓刚, 陈华. 在湿H₂S环境中金属腐蚀行为和机理研究概述 [J]. 腐蚀科学与防护技术, 2005, 17: 107)
[3]	Zheng H J, Zhang K D. Stress effect in SCC system of 16MnR material in saturated H₂S solution [J]. J. Zhejiang Univ. Technol., 2001, 29: 360
[3]	(郑华均, 张康达. 应力在16MnR钢饱和硫化氢溶液应力腐蚀体系中的作用 [J]. 浙江工业大学学报, 2001, 29: 360)
[4]	Liu Z Y, Zhai G L, Du C W, et al. Stress corrosion behavior of X70 pipeline steel in simulated solution of acid soil [J]. Acta Metall. Sin., 2008, 44: 209
[4]	(刘智勇, 翟国丽, 杜翠薇等. X70钢在酸性土壤模拟溶液中的应力腐蚀行为 [J]. 金属学报, 2008, 44: 209)
[5]	Yan M C, Sun C, Xu J, et al. Stress corrosion of pipeline steel under occluded coating disbondment in a red soil environment [J]. Corros. Sci., 2015, 93: 27
[6]	Bai W F. Study on the influencing factors on wet H₂S stress corrosion cracking test of oil tube [D]. Shanghai: Shanghai Jiao Tong University, 2010
[6]	(柏文峰. 油井管在湿硫化氢环境下应力腐蚀试验若干影响因素研究 [D]. 上海: 上海交通大学, 2010)
[7]	Liu Z Y, Li X G, Du C W, et al. Experimental Evaluation Method of Corrosion Behavior and Mechanism for Typical Materials in Oil/Gas-Field Environments [M]. Beijing: Science Press, 2016: 110
[7]	(刘智勇, 李晓刚, 杜翠薇等. 典型材料油气田腐蚀实验评价方法 [M]. 北京: 科学出版社, 2016: 110)
[8]	Gutzeit J. Corrosion of steel by sulphides and cyanides in refinery condensate water [J]. Mater. Prot., 1968, 12: 17
[9]	Zhao M C, Shan Y Y, Li Y H, et al. Effect of microstructure on sulfide stress corrosion cracking of pipeline steels [J]. Acta Metall. Sin., 2001, 37: 1087
[9]	(赵明纯, 单以银, 李玉海等. 显微组织对管线钢硫化物应力腐蚀开裂的影响 [J]. 金属学报, 2001, 37: 1087)
[10]	Lu Z M. Research on stress corrosion cracking of typical pressure vessel steels in wet hydrogen sulfide service [D]. Hangzhou: Zhejiang University, 2003
[10]	(卢志明. 典型压力容器用钢在湿硫化氢环境中的应力腐蚀开裂研究 [D]. 杭州: 浙江大学, 2003)
[11]	Liu Z Y, Dong C F, Li X G, et al. Stress corrosion cracking of 2205 duplex stainless steel in H₂S-CO₂ environment [J]. J. Mater. Sci., 2009, 44: 4228
[12]	Dong C F, Liu Z Y, Li X G, et al. Effects of hydrogen-charging on the susceptibility of X100 pipeline steel to hydrogen-induced cracking [J]. Int. J. Hydrog. Energy, 2009, 34: 9879
[13]	Liu Z Y, Wang X Z, Liu R K, et al. Electrochemical and sulfide stress corrosion cracking behaviors of tubing steels in a H₂S/CO₂ annular environment [J]. J. Mater. Eng. Perform., 2014, 23: 1279
[14]	He X, Cui YH, Li G B, et al. Crack growth driving force at tip of stress corrosion cracking in nuclear structural materials at initial stage [J]. Rare Met. Mater. Eng., 2018, 47: 2365
[15]	Qu X J. Stress corrosion cracking behavior research of 316L stainless steel in saturated CO₂+Cl^-+H₂S [D]. Qingdao: China University of Petroleum (East China), 2016
[15]	(曲效建. 316L不锈钢在饱和CO₂+Cl^-+H₂S介质环境中的应力腐蚀行为研究 [D]. 青岛: 中国石油大学 (华东), 2016)
[16]	Liu Z Y, Li X G, Cheng Y F. Mechanistic aspect of near-neutral pH stress corrosion cracking of pipelines under cathodic polarization [J]. Corros. Sci., 2012, 55: 54

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