腐蚀产物膜对X70管线钢焊缝海底腐蚀行为的影响
Effect of Corrosion Product Film on Seabed Corrosion Behavior of X70 Pipeline Steel Weld
摘 要
将X70管线钢焊缝在模拟南海海泥溶液中浸泡腐蚀10，24，72，120 h后，通过扫描电镜和能谱仪分析了其表面腐蚀产物的形貌及组成，通过慢应变速率拉伸试验和动电位极化试验研究了腐蚀产物膜对焊缝腐蚀行为的影响。结果表明：随着腐蚀时间的延长，焊缝表面腐蚀产物膜逐渐增厚，腐蚀72 h时形成致密的腐蚀产物膜，腐蚀120 h后膜中产生较多孔洞和裂纹；随着腐蚀时间的延长，焊缝的应力腐蚀敏感性呈现先增大再减小再增大的趋势，电化学腐蚀性能的变化趋势相同；腐蚀72 h时，致密腐蚀产物膜的形成降低了焊缝的应力腐蚀敏感性，提高了其耐腐蚀性能。
焊缝
腐蚀产物膜
腐蚀行为
应力腐蚀
X70 pipeline steel
weld
corrosion product film
corrosion behavior
stress corrosion
Abstract
After corrosion in simulated South China Sea mud solution for 10, 24, 72, 120 h, the morphology and composition of the corrosion products on surface of the weld of X70 pipeline steel were analyzed by scanning electron microscopy and energy spectroscopy. Then the effect of corrosion product film on the corrosion behavior of the weld was studied by slow strain rate tensile tests and potentiodynamic polarization tests. The results show that with increasing corrosion time, the corrosion product films on surface of the weld were thickened. A dense corrosion product film was formed after corrosion for 72 h, and more pores and cracks were formed in the film after 120 h corrosion. With increasing corrosion time, the stress corrosion sensitivity of the weld increased first, then decreased, and then slightly increased. The electrochemical corrosion behavior showed the same change. After corrosion for 72 h, the formation of the dense corrosion product film reduced the stress corrosion sensitivity of the weld and improved the corrosion resistance.
中图分类号 TG172.5 DOI 10.11973/jxgccl202107003
所属栏目 试验研究
基金项目 辽宁省“兴辽英才计划”项目（XLYC1807260）；辽宁省自然科学基金指导计划项目（20180550669）
收稿日期 2020/1/3
修改稿日期 2021/3/3
网络出版日期
作者单位点击查看
备注张凯丽(1993-),女,河北张家口人,硕士研究生
引用该论文: ZHANG Kaili,XIE Fei,WU Ming,WANG Dan,GAI Zuosong,LIU Jin. Effect of Corrosion Product Film on Seabed Corrosion Behavior of X70 Pipeline Steel Weld[J]. Materials for mechancial engineering, 2021, 45(7): 12～16
张凯丽,谢飞,吴明,王丹,盖左松,刘晋. 腐蚀产物膜对X70管线钢焊缝海底腐蚀行为的影响[J]. 机械工程材料, 2021, 45(7): 12～16
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参考文献
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【17】沈丽霞, 杨霜, 王雪里, 等. 腐蚀产物膜对X80钢腐蚀行为的影响[J]. 电镀与精饰, 2015, 37(7):10-14. SHEN L X, YANG S, WANG X L, et al. Effect of corrosion products layer on corrosion behavior of X80 pipeline steel[J]. Plating & Finishing, 2015, 37(7):10-14.
【2】丁润江. 高钢级X70管线钢的组织性能研究[D]. 唐山:河北理工大学, 2009:42-44. DING R J. Research on microstructure and properties of high pipeline steel X70[D]. Tangshan:Hebei Polytechnic University, 2009:42-44.
【3】廖柯熹, 陈卓婷, 曹增辉. X65管线钢焊接接头在模拟浅表海水环境中的应力腐蚀试验研究[J]. 材料保护, 2018, 51(3):21-25. LIAO K X, CHEN Z T, CAO Z H. Experimental study of stress corrosion of X65 pipeline steel welded joint in seawater environment[J]. Materials Protection, 2018, 51(3):21-25.
【4】葛秋辰, 陈健, 汪兵, 等. 显微组织对超低碳X80管线钢氢致开裂行为的影响[J]. 机械工程材料, 2017, 41(1):20-24. GE Q C, CHEN J, WANG B, et al. Effect of microstructures on hydrogen induced cracking behavior of ultra-low carbon X80 pipeline steel[J]. Materials for Mechanical Engineering, 2017, 41(1):20-24.
【5】SHI C W, ZHANG Y B, LIU P, et al. Effects of second thermal cycles on microstructure and CO2 corrosion behavior of X80 pipeline steel[J]. International Journal of Electrochemical Science, 2018,13:2412-2429.
【6】朱亦晨, 刘光明, 刘欣, 等. Q235钢在3种典型土壤环境中的腐蚀行为[J]. 机械工程材料, 2019, 43(10):15-19. ZHU Y C, LIU G M, LIU X, et al. Corrosion behavior of Q235 steel in three typical soil environments[J]. Materials for Mechanical Engineering, 2019, 43(10):15-19.
【7】MOLCHAN I S, THOMPSON G E, LINDSAY R, et al. Corrosion behaviour of mild steel in 1-alkyl-3-methylimidazolium tricyanomethanide ionic liquids for CO2 capture applications[J]. RSC Advances, 2014, 4(11):5300.
【8】BREWICK P T, DEGIORGI V G, GELTMACHER A B, et al. Modeling the influence of microstructure on the stress distributions of corrosion pits[J]. Corrosion Science, 2019, 158:108111.
【9】ZHANG G A, CHENG Y F. Micro-electrochemical characterization of corrosion of welded X70 pipeline steel in near-neutral pH solution[J]. Corrosion Science, 2009, 51(8):1714-1724.
【10】马歌, 左秀荣, 洪良, 等. 深海用X70管线钢焊接接头腐蚀行为研究[J]. 金属学报, 2018, 54(4):527-536. MA G, ZUO X R, HONG L, et al. Investigation of corrosion behavior of welded joint of X70 pipeline steel for deep sea[J]. Acta Metallurgica Sinica, 2018, 54(4):527-536.
【11】刘广鑫, 吴明, 宫克. 南海环境中应力载荷作用下X100管线钢腐蚀行为[J]. 冶金能源, 2019, 38(3):22-27. LIU G X, WU M, GONG K. Corrosion behaviour of X100 pipeline steel under stress loading in the South China sea environment[J]. Energy for Metallurgical Industry, 2019, 38(3):22-27.
【12】朱世东, 杜明, 张骁勇, 等. 腐蚀产物膜对石油管材腐蚀行为影响的研究进展[J]. 腐蚀与防护, 2019, 40(6):428-435. ZHU S D, DU M, ZHANG X Y, et al. Research progress of effects of corrosion scale on corrosion behavior of petroleum pipe[J]. Corrosion & Protection, 2019, 40(6):428-435.
【13】张慧, 杜艳霞, 李伟, 等. 不同环境介质中X70钢的交流腐蚀行为及腐蚀产物膜层分析[J]. 金属学报, 2017, 53(8):975-982. ZHANG H, DU Y X, LI W, et al. Investigation on AC-induced corrosion behavior and product film of X70 steel in aqueous environment with various ions[J]. Acta Metallurgica Sinica, 2017, 53(8):975-982.
【14】刘骋, 郭岩宝, 王德国, 等. 交流杂散电流对X80管线钢腐蚀行为的影响[J]. 腐蚀与防护, 2015, 36(3):213-217. LIU C, GUO Y B, WANG D G, et al. Effects of alternating stray current on corrosion behavior of X80 pipeline steel[J]. Corrosion & Protection, 2015, 36(3):213-217.
【15】吴明, 宗月, 谢飞, 等. 模拟海水中Cl-浓度对Q235和X70管线钢腐蚀行为的影响[J]. 金属热处理, 2017, 42(2):62-66. WU M, ZONG Y, XIE F, et al. Effect of chloridion concentration on corrosion behavior of Q235 and X70 pipeline steel in simulated seawater[J]. Heat Treatment of Metals, 2017, 42(2):62-66.
【16】张亮, 李晓刚, 杜翠薇, 等. 管线钢应力腐蚀影响因素的研究进展[J]. 腐蚀科学与防护技术, 2009, 21(1):62-65. ZHANG L, LI X G, DU C W, et al. Progress in study of factors affecting stress corrosion cracking of pipeline steels[J]. Corrosion Science and Protection Technology, 2009, 21(1):62-65.
【17】沈丽霞, 杨霜, 王雪里, 等. 腐蚀产物膜对X80钢腐蚀行为的影响[J]. 电镀与精饰, 2015, 37(7):10-14. SHEN L X, YANG S, WANG X L, et al. Effect of corrosion products layer on corrosion behavior of X80 pipeline steel[J]. Plating & Finishing, 2015, 37(7):10-14.
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