Electrochemical corrosion, hydrogen penetration and stress corrosion cracking behavior of X80 steel heat-affected zone in sulfate-reducing bacteria-containing seawater

IF 7.4 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Corrosion Science Pub Date : 2024-11-22 DOI:10.1016/j.corsci.2024.112590

Gengxin Li, Min Du

引用次数: 0

Abstract

The electrochemical corrosion, hydrogen penetration, and stress corrosion cracking (SCC) behaviors of simulated intercritical heat-affected zone (ICHAZ), ﬁne-grained heat-affected zone (FGHAZ), and coarse-grained heat-affected zone (CGHAZ) are investigated in inoculated seawater. The results show that sulfate-reducing bacteria (SRB) accelerates corrosion and increases SCC susceptibility. However, there are variations in the degree of influence of SRB on corrosion of different microstructures. The differences are closely associated with the amount and location of SRB adhesion to the simulated HAZ microstructure. This is attributed to differences in grain boundary types, dislocation density, local strain accumulation and surface Volta potential of the simulated microstructures.

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含硫酸盐还原菌海水中 X80 钢热影响区的电化学腐蚀、氢渗透和应力腐蚀开裂行为

研究了模拟临界热影响区（ICHAZ）、细粒热影响区（FGHAZ）和粗粒热影响区（CGHAZ）在接种海水中的电化学腐蚀、氢渗透和应力腐蚀开裂（SCC）行为。结果表明，硫酸盐还原菌（SRB）会加速腐蚀并增加 SCC 的易感性。然而，SRB 对不同微结构腐蚀的影响程度存在差异。这些差异与 SRB 附着在模拟 HAZ 微结构上的数量和位置密切相关。这归因于模拟微结构的晶界类型、位错密度、局部应变积累和表面伏特电位的差异。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Corrosion Science 工程技术-材料科学：综合

CiteScore

13.60

自引率

18.10%

发文量

763

审稿时长

46 days

期刊介绍： Corrosion occurrence and its practical control encompass a vast array of scientific knowledge. Corrosion Science endeavors to serve as the conduit for the exchange of ideas, developments, and research across all facets of this field, encompassing both metallic and non-metallic corrosion. The scope of this international journal is broad and inclusive. Published papers span from highly theoretical inquiries to essentially practical applications, covering diverse areas such as high-temperature oxidation, passivity, anodic oxidation, biochemical corrosion, stress corrosion cracking, and corrosion control mechanisms and methodologies. This journal publishes original papers and critical reviews across the spectrum of pure and applied corrosion, material degradation, and surface science and engineering. It serves as a crucial link connecting metallurgists, materials scientists, and researchers investigating corrosion and degradation phenomena. Join us in advancing knowledge and understanding in the vital field of corrosion science.