Selective corrosion behavior of X80 steel heat affected zone by SRB in coastal saline soil

被引：6
|
作者：
Yu, Youjun [1 ,2 ]
Xu, Jin [3 ,4 ]
Liu, Baixing [1 ]
Chai, Tingxi [1 ]
Sun, Cheng [3 ,4 ]
机构：
[1] Lanzhou City Univ, Sch Bailie Mech Engn, Lanzhou 730070, Peoples R China
[2] Gansu Welding Technol & Welding Qual Evaluat Engn, Lanzhou 730070, Peoples R China
[3] Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
[4] Chinese Acad Sci, Inst Met Res, Liaoning Shenyang Soil & Atmosphere Mat Corros Nat, Shenyang 110016, Peoples R China
来源：
INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING | 2023年 / 203卷
关键词：
X80; steel; Welded joint; Coastal saline soil; MIC; SRB; MICROBIOLOGICALLY INFLUENCED CORROSION; SULFATE-REDUCING BACTERIA; PIPELINE STEEL; CARBON-STEEL; STAINLESS-STEEL; MICROSTRUCTURE; EVOLUTION; Q235;
D O I：
10.1016/j.ijpvp.2023.104924
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The corrosion behavior of heat affected zone of X80 pipeline steel was investigated in coastal saline soil with or without sulfate-reducing bacteria (SRB). In the sterile soil environment, the diameter, depth, and density of corrosion pits detected in the coarse grain zone (CGZ) were larger than those in the fine-grained zone (FGZ) and fusion zone (FZ). In the soil environment inoculated with SRB, the microbes enhance the corrosion of FGZ, CGZ, and FZ. The corrosion susceptibility of CGZ coupons is stronger in the presence of SRB than those of FGZ and FZ coupons.
引用
收藏
页数：15
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