Corrosion behavior of the weld joint of X80 pipeline steel in an acidic red soil

被引：10

作者：

Gao, Xianming ^{[1
]}

Wu, Tangqing ^{[1
]}

Liu, Meng ^{[2
]}

Wang, Binbin ^{[3
]}

Zhang, Minghua ^{[1
]}

Li, Cong ^{[1
]}

Yin, Fucheng ^{[1
]}

机构：

[1] Xiangtan Univ, Sch Mat Sci & Engn, Key Lab Mat Design & Preparat Technol Hunan Prov, Xiangtan 411105, Peoples R China

[2] PetroChina Co Ltd, Pipeline Technol Res Ctr, Langfang 065000, Peoples R China

[3] PetroChina Co Ltd, South West Pipeline Co, Chengdu 610036, Peoples R China

来源：

MATERIALS RESEARCH EXPRESS | 2020年 / 7卷 / 03期

基金：

中国国家自然科学基金;

关键词：

X80 pipeline steel; weld joint; red soil; soil corrosion; electrochemical impedance spectroscopy; MICROBIOLOGICALLY INFLUENCED CORROSION; SULFATE-REDUCING BACTERIA; HEAT-AFFECTED ZONE; BIOFILM FORMATION; OIL; MICROSTRUCTURE; FAILURE; INCLUSIONS; EVOLUTION; TOUGHNESS;

D O I：

10.1088/2053-1591/ab71c8

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this paper, the corrosion behavior of X80 pipeline steel weld joints in an acidic red soil solution was studied. The results show that uniform corrosion occurs on the entire surface of the weld joint after 840 h immersion. The corrosion degree of heat affected zone (HAZ) is more serious than that of base metal (BM) and weld zone (WZ). The corrosion rate of HAZ specimen is always higher than those of WZ and BM specimens throughout the separated immersion. The accelerating corrosion of HAZ may come from its microstructure change, its corrosion sensitivity and the deterioration of mechanical performance of corrosion product on it.

引用

页数：15

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