Q345R钢焊缝区大气腐蚀行为研究

都俐俐; 张红兵; 许守武; 张凯丽; 邱萍

Q345R钢焊缝区大气腐蚀行为研究

1. 中国石油大学(北京)油气装备材料失效与腐蚀防护北京市重点实验室, 北京 102249;
2. 国家石油天然气管网集团有限公司工程部, 北京 100013

详细信息

作者简介:
都俐俐,女,1999年生,博士研究生,主要研究方向为石油石化装备用材料腐蚀行为。

中图分类号: TG142
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出版历程
- 收稿日期: 2022-09-06
- 网络出版日期: 2023-01-12

Study on Atmospheric Corrosion Behavior of Q345R Steel Weld Zone

1. Beijing Key Laboratory of Failure, Corrosion and Protection of Oil/Gas Equipment Materials, China University of Petroleum (Beijing), Beijing 102249, China;
2. Engineering Department of National Petroleum and Natural Gas Pipeline Network Group Co., Ltd., Beijing 100013, China

摘要

摘要: 研究了储罐钢Q345R钢焊缝区的大气腐蚀特征,并通过极化曲线和交流阻抗技术对比分析了热影响区、焊缝和母材的腐蚀行为,结合扫描电子显微镜、激光拉曼光谱仪对样品表面腐蚀微观结构和组成进行表征。研究结果揭示:母材的腐蚀敏感性最大,焊缝区较热影响区相比更耐蚀。腐蚀倾向与显微组织存在一定关系,焊缝区的显微组织为粒状贝氏体与针状铁素体,因该区域组织细化明显降低该区域的腐蚀敏感性,同时因焊接工艺使焊缝处几乎成为无孔区,母材处存在的微孔隙会导致母材具有更高的腐蚀速率。
- Q345R钢 /
- 焊缝区 /
- 大气腐蚀
Abstract: The atmospheric corrosion characteristics of the weld zone of storage tank steel Q345R are studied, and the corrosion behaviors of the heat affected zone, weld and base metal are analyzed by polarization curve and AC impedance technique. The surface corrosion microstructure and compositions of the samples are characterized by scanning electron microscope and laser Raman spectrometer. The results show that the base metal has the greatest corrosion susceptibility, and the weld zone is more resistant to corrosion than the heat-affected zone. There is some relationship between the corrosion tendency and the microstructure. The microstructure of the weld zone consists of granular bainite and acicular ferrite, and the refinement of the microstructure of this zone can obviously reduce its corrosion susceptibility. The welding process makes the weld almost a non-porous area; therefore, the base metal with micropores has a higher corrosion rate.
- Q345R steel /
- weld zone /
- atmospheric corrosion

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参考文献(25)

[1]	张耀, 郑峥. 储油罐腐蚀特征及失效分析[J]. 石油化工腐蚀与防护, 2004, 21(2):40-42.
[2]	刘健. 石油化工设备湿硫化氢腐蚀与防护[J]. 化工设计通讯, 2017, 43(10):85.
[3]	王磊. Q345(R-HIC)钢焊接接头的氢致开裂和应力腐蚀试验研究[D].镇江:江苏科技大学, 2014.
[4]	孙超, 王东东, 齐建军, 等. 抗HIC压力容器用Q345R(R-HIC)钢焊接接头组织与性能研究[J]. 热加工工艺, 2019, 48(1):47-50.
[5]	廖景娱. 金属构件失效分析[M].北京:化学工业出版社, 2003.
[6]	毛亮, 马照伟, 袁博, 等. TA5钛合金激光填丝焊接工艺研究[J]. 材料开发与应用, 2022, 37(1):66-71.
[7]	谢飞, 许长浩, 王丹, 等. 温度对X80管线钢及其焊缝腐蚀行为的影响[J]. 钢铁, 2015, 50(8):89-94.
[8]	吴明, 谢飞, 陈旭, 等. X80管线钢及其焊缝在库尔勒土壤环境中腐蚀行为[J]. 四川大学学报(工程科学版), 2013, 5(5):185-191.
[9]	师仲然, 潘涛, 王瑞珍, 等. 氮含量对钒微合金钢粗晶热影响区组织和韧性的影响[J]. 材料开发与应用, 2022, 37(2):10-18.
[10]	成应晋, 丁鹏龙. 高强度结构钢及其接头热影响区的疲劳及断裂性能分析[J]. 材料开发与应用, 2021, 36(5):67-71.
[11]	陆卫婷, 崔磊, 郭满平. 原油储罐的腐蚀与防护浅析[J]. 山东化工, 2019, 48(16):162.
[12]	刘广洪. 储油罐腐蚀原因分析及防控措施[J]. 中国化工装备, 2015, 17(5):35-38.
[13]	戢宇. 联合站储油罐防腐措施[J]. 全面腐蚀控制, 2020, 34(2):114-115.
[14]	宋丽, 周青. 成品油罐外壁的腐蚀与防护[J]. 石油商技, 2002,20(6):35-36.
[15]	杨超, 张亚军. 管座角焊缝接头D-N疲劳曲线试验研究[J]. 材料开发与应用, 2021, 36(1):77-82.
[16]	GONG K. Effect of dissolved oxygen concentration on stress corrosion cracking behavior of pre-corroded X100 steel base metal and the welded joint in wet-dry cycle conditions[J]. Journal of Natural Gas Science and Engineering, 2020, 77:103264.
[17]	KANDAVEL T K, PANNEERSELVAM T, GOVIND V, et al. A study on corrosion behaviour of various modes of ATIG welded plain carbon steel[J]. Materials Today:Proceedings, 2022,66:1303-1312.
[18]	KOVALEVM, SHAKHMATOVA, ALHIMENKOA. El-ectrochemical studies of welded joints corrosion resistance made from stainless steels[J]. Materials Today:Proceedings, 2020, 30:501-505.
[19]	EGHLIMI A. Evaluation of microstructure and texture across the welded interface of super duplex stainless steel and high strength low alloy steel[J]. Surface and Coatings Technology, 2015, 264:150-162.
[20]	KHALAJ G,KHALAJ M J. Investigating the corrosion of the Heat-Affected Zones (HAZs) of API-X70 pipeline steels in aerated carbonate solution by electrochemical methods[J]. International Journal of Pressure Vessels and Piping, 2016, 145:1-12.
[21]	卢巧婷, 冯立果, 贾改风. 抗硫化氢腐蚀容器钢Q345R(R-HIC)的生产实践[J]. 中国冶金, 2014, 24(9):29-32.
[22]	BEEHARRY P,SURNAM B. Atmospheric corrosion of welded mild steel[J]. Materials Today:Proceedings, 2018, 5(2):7476-7485.
[23]	OKONKWO B O, MING H, WANG J, et al. Galvanic corrosion study between low alloy steel A508 and 309/308 L stainless steel dissimilar metals:a case study of the effects of oxide film and exposure time[J]. Journal of Nuclear Materials, 2021, 548:152853.
[24]	ZHANG W, YOUNG D, BROWN B, et al. An insituRaman study on the oxidation of mackinawite as a corrosion product layer formed on mild steel in marginally sour environments[J]. Corrosion Science, 2021, 188:109516.
[25]	曹楚南, 张鉴清. 电化学阻抗谱导论[M].北京:科学出版社, 2002.