Article
Materials Science, Multidisciplinary
Jian Wang, Min Du, Xueyan Shan
Summary: The effects of marine Streptomyces on the corrosion process of X65 steel were investigated. The production of organic acid by Streptomyces accelerated the corrosion rate initially, but the formation of a special honeycomb corrosion product structure promoted the enrichment of protein/polysaccharide on the metal surface, leading to a denser biomineralized film and reduced corrosion rate, especially localized corrosion. However, in the later stage, the shedding of the protective film layer intensified the corrosion, although no obvious pitting corrosion was observed. The unique antimicrobial-like metabolites have potential applications in microbiologically influenced corrosion inhibition.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Chemistry, Analytical
Qiuli Zhang, Jingjing Li, Jiahui Liu, Chengxian Yin, Yixing Qi, Jun Zhou
Summary: This paper investigates the local corrosion processes of X100 pipeline steel using a wire beam electrode (WBE) under static and flow conditions in a simulated solution with HCO3-. The results show that the current density mapper of the WBE aligns well with the polarization curves, making it an effective online corrosion monitoring approach. The WBE detects undetectable pitting and passivation qualities in the X100 steel under static conditions. Under flow conditions, the corrosion current density of X100 steel is significantly higher, and the presence of HCO3- ions decreases its corrosion resistance.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Electrochemistry
Yong Yang, Ming Sun, Yanlong Luo, Weiguo Zeng, Renyang He
Summary: The study found that the AC corrosion rate of X100 pipeline steel in simulated alkaline and acidic soil solutions increased with the applied AC current density, but the rate gradually decreased, with higher rates in acidic solutions. Under certain current densities, localized corrosion occurred, while lower densities resulted in general corrosion in the simulated solutions.
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Zhao Jie, Liu Yida, Yang Xiaoyu, He Xin, Wang Lei, Xiong Dan, Gu Yanhong
Summary: This study investigates the corrosion behavior of X100 pipeline steel at different flow rates, finding that corrosion becomes more severe under simulated real working conditions and that higher flow rates lead to increased corrosion and accumulation of corrosion products.
JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION
(2022)
Article
Microbiology
Peiyu Shi, Min Du, Jian Wang
Summary: In this study, the impact of Alcaligenes sp. on the corrosion process of X65 steel was investigated using non-targeted metabolomics techniques. The results revealed that the organic acids produced by Alcaligenes sp. accelerated the early-stage corrosion of X65 steel, while promoting the deposition of stable corrosion products and minerals in the middle and late stages. Additionally, the presence of proteoglycans and corrosion inhibiting substances on the metal surface enhanced the film's stability, effectively inhibiting the corrosion of X65 steel.
FRONTIERS IN MICROBIOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Yingjian Huang, Qiuqing Zhu, Zhenju Zhou, Yu Zhou, Hui Cang, Yongming Tang
Summary: The corrosion behaviors of low-alloy steel were studied in simulated tidal zones using various testing methods. The results showed that the corrosion in tidal zones was more severe than in the immersion zone, with the low tide and middle tide zones experiencing more severe corrosion than the high tide zone.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Electrochemistry
Xiang-Hong Lu, Xin-Xin Zhang, Kaifeng Zhao, Zuoming Chen, Jian Li, Chen Wang
Summary: The corrosion behavior of 5Cr, 9Cr and 13Cr steels in CO2 corrosion environment was studied through high temperature and high pressure weight loss test and electrochemical test, with J55 material as comparison. Scanning electron microscopy analyzed the morphology of corrosion products. The corrosion resistance mechanism of Cr-containing steel was analyzed from the perspective of structural stability. The results show that the Cr-containing alloy steel has lower uniform corrosion rate and higher CO2 corrosion resistance compared to J55 steel.
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
(2023)
Article
Electrochemistry
Wensheng Li, Anqing Fu, Yan Tian, Yafeng Ju, Menghan Xue, Chengxian Yin, Qiuli Zhang
Summary: The study investigated the effects of fluid flow velocity and impact angle on the corrosion of X100 steel, finding that an increase in flow velocity and decrease in impact angle leads to higher corrosion rates. It is important to consider the corrosion of pipeline steel in different environmental conditions.
Article
Construction & Building Technology
Cheng Cheng, Fumin Li, Xiangren Wang, Zhen Guo
Summary: In this study, an artificially simulated corrosion method is used to investigate the high-temperature mechanical properties of corroded Q500MC steel. The results show that the fracture characteristics of steel containing artificial pits are affected by the minimum cross-sectional area below 500°C, while the corrosion rate increasingly influences the reduction of the high-temperature ultimate load of steel at 500°C. Above 600°C, only the temperature determines the reduction degree of the ultimate load of corroded steel, and the influence of the corrosion rate is greater than that of the minimum cross-sectional area proportion.
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Zuo-peng Zhao, Kai Xu, Peng-fei Xu, Bin Wang
Summary: The study revealed that the corrosion resistance of different sub-regions in the heat-affected zones of X80 pipeline steel is influenced by their microstructural sensitivity to CO2 corrosion in NaCl aqueous solutions. The weakening of corrosion resistance in the coarse-grained HAZ is attributed to larger grain size and coarsening martensite/austenite constituents in the matrix.
MATERIALS CHARACTERIZATION
(2021)
Article
Chemistry, Physical
Wenxian Su, Zhikuo Liu
Summary: This paper presents a 2-D model to describe the spatial and temporal damage evolution during crevice corrosion. By simulating the crevice corrosion of nickel (Ni) metal in sulfuric acid and X100 steel in CO2 solution, the study reveals the change in corrosion damage area and critical potential, providing important insights for predicting the initial damage location and occurrence time of surface damage in crevice corrosion.
Article
Materials Science, Multidisciplinary
Song Longfei, Liu Zhiyong, Li Xiaogang, Guo Xingpeng, Zhang Yinxiao, Wei Wu
Summary: This study investigated the stress corrosion cracking (SCC) behavior of X100 pipeline steels with different heat-treated microstructures in carbonate/bicarbonate solution. The results showed that SCC susceptibility increased as the cathodic potential shifted. At a weak cathodic potential, hydrogen sensitivity controlled SCC behavior, while at a more negative potential, both electrochemical effect and hydrogen sensitivity influenced SCC behavior. The propagation paths of SCC cracks varied with the adjustment of the applied potential.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Electrochemistry
Bingying Wang, Yige Liu, Zhiwei Gao, Tongle Zhang, Feng Yang, Shouqin Li
Summary: This study investigated the evolution process of pits and stress corrosion cracks in SAE 4120 steel in a simulated oilfield environment, finding that corrosion pits originated from inclusions and stress corrosion cracks initiated from the bottom of secondary corrosion pits and extended along the depth direction of the steel. Finite Element Analysis revealed that the maximum values of stress and strain were located at the bottom of corrosion pits, making it the sensitive position for stress corrosion cracking.
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Ping Deng, Qunjia Peng, En-Hou Han, Wei Ke, Chen Sun
Summary: The study found that increasing the irradiation dose promoted localized corrosion at the slip step and grain boundary in irradiated 304 nuclear grade stainless steel, primarily due to strain concentration induced by enhanced localized deformation and depletion of Cr at grain boundary. The synergic effect of enhanced localized deformation and localized corrosion at the slip step and grain boundary caused a higher cracking susceptibility in the irradiated steel.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Electrochemistry
Zhang Ying, Yang Kun, Yu Liusi, Gao Anqi
Summary: The effect of applied stress on the crevice corrosion of P110 well pipe thread joint steel was investigated. The results showed that the applied stress increased the crevice corrosion tendency of P110 steel and accelerated its corrosion rate. This behavior may be attributed to the stress destroying the compactness of corrosion products and reducing the barrier effect of corrosion products.
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
(2022)
