Tiansui Zhang , Zixuan Xu , Huihai Wan , Guoqing Wang , Haotian Wu , Xuedong Chen , Hongfang Liu
{"title":"硫酸盐还原菌诱导 X80 碳钢在拉伸应力作用下的局部腐蚀和脆性断裂","authors":"Tiansui Zhang , Zixuan Xu , Huihai Wan , Guoqing Wang , Haotian Wu , Xuedong Chen , Hongfang Liu","doi":"10.1016/j.electacta.2024.144598","DOIUrl":null,"url":null,"abstract":"<div><p>The microbiologically influenced corrosion (MIC) of X80 carbon steel under varying tensile stresses with the presence of sulfate reducing bacteria (SRB) was investigated. The stress loads affected the SRB sessile cell counts on the carbon steel, and exerted a significant influence on the rate of MIC to which the carbon steel was subjected. Stresses below 400 MPa elicited a modest promotion effect, whereas the stress of 550 MPa which was approaching the yield strength markedly expedited the corrosion of SRB on X80 carbon steel. Finite element simulation revealed that the elastic stress of 550 MPa led to plastic deformation in the stress concentration zone at the base of the corrosion pit, exacerbating the dissolution of the metal in pits and inducing secondary pitting corrosion. Additionally, this work confirmed that SRB promoted the permeation of hydrogen into the carbon steel matrix. The coexistence of high elastic stress and SRB rendered X80 carbon steel more prone to brittle fracture.</p></div>","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":null,"pages":null},"PeriodicalIF":5.5000,"publicationDate":"2024-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Localized corrosion and brittle fracture of X80 carbon steel under tensile stress induced by sulfate reducing bacteria\",\"authors\":\"Tiansui Zhang , Zixuan Xu , Huihai Wan , Guoqing Wang , Haotian Wu , Xuedong Chen , Hongfang Liu\",\"doi\":\"10.1016/j.electacta.2024.144598\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The microbiologically influenced corrosion (MIC) of X80 carbon steel under varying tensile stresses with the presence of sulfate reducing bacteria (SRB) was investigated. The stress loads affected the SRB sessile cell counts on the carbon steel, and exerted a significant influence on the rate of MIC to which the carbon steel was subjected. Stresses below 400 MPa elicited a modest promotion effect, whereas the stress of 550 MPa which was approaching the yield strength markedly expedited the corrosion of SRB on X80 carbon steel. Finite element simulation revealed that the elastic stress of 550 MPa led to plastic deformation in the stress concentration zone at the base of the corrosion pit, exacerbating the dissolution of the metal in pits and inducing secondary pitting corrosion. Additionally, this work confirmed that SRB promoted the permeation of hydrogen into the carbon steel matrix. The coexistence of high elastic stress and SRB rendered X80 carbon steel more prone to brittle fracture.</p></div>\",\"PeriodicalId\":305,\"journal\":{\"name\":\"Electrochimica Acta\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":5.5000,\"publicationDate\":\"2024-06-14\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Electrochimica Acta\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0013468624008387\",\"RegionNum\":3,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ELECTROCHEMISTRY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Electrochimica Acta","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0013468624008387","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ELECTROCHEMISTRY","Score":null,"Total":0}
Localized corrosion and brittle fracture of X80 carbon steel under tensile stress induced by sulfate reducing bacteria
The microbiologically influenced corrosion (MIC) of X80 carbon steel under varying tensile stresses with the presence of sulfate reducing bacteria (SRB) was investigated. The stress loads affected the SRB sessile cell counts on the carbon steel, and exerted a significant influence on the rate of MIC to which the carbon steel was subjected. Stresses below 400 MPa elicited a modest promotion effect, whereas the stress of 550 MPa which was approaching the yield strength markedly expedited the corrosion of SRB on X80 carbon steel. Finite element simulation revealed that the elastic stress of 550 MPa led to plastic deformation in the stress concentration zone at the base of the corrosion pit, exacerbating the dissolution of the metal in pits and inducing secondary pitting corrosion. Additionally, this work confirmed that SRB promoted the permeation of hydrogen into the carbon steel matrix. The coexistence of high elastic stress and SRB rendered X80 carbon steel more prone to brittle fracture.
期刊介绍:
Electrochimica Acta is an international journal. It is intended for the publication of both original work and reviews in the field of electrochemistry. Electrochemistry should be interpreted to mean any of the research fields covered by the Divisions of the International Society of Electrochemistry listed below, as well as emerging scientific domains covered by ISE New Topics Committee.