腐蚀
焊接
材料科学
冶金
扫描电子显微镜
母材
合金
海水
高强度低合金钢
点蚀
沉浸式(数学)
接头(建筑物)
缝隙腐蚀
人工海水
复合材料
地质学
结构工程
海洋学
数学
纯数学
工程类
作者
Xuehui Liu,Yongqiang Sui,Huixia Zhang,Hongtao Tong,Hongqing Song
标识
DOI:10.1002/maco.202213373
摘要
Abstract In this work, the corrosion behavior of high‐strength low alloy (HSLA) steel welded joints in natural seawater solution was investigated by electrochemical and immersion tests. The experimental results prove that the corrosion resistance of the weld metal (WM) was higher than that of the base metal (BM). The scanning Kelvin probe results show that the potential distribution of the BM zone is lower than the heat‐affected zone (HAZ) and WM zone. The scanning vibrating electrode technique results demonstrate that the initial attack for the HSLA welded joint majorly took place in the BM zone after immersion in natural seawater. The corrosion morphology of the HSLA welded joint after immersion was observed by scanning electron microscope. The corrosion morphology of BM and HAZ regions tends to be uniform corrosion, whereas it is mainly pitting corrosion for the WM zone.
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