C. Pandey , N. Saini , J.G. Thakre , M.M. Mahapatra , P. Kumar
{"title":"Effect of cooling medium on microstructure evolution and tensile properties of creep-strength-enhanced ferritic steel","authors":"C. Pandey , N. Saini , J.G. Thakre , M.M. Mahapatra , P. Kumar","doi":"10.1016/j.stmat.2018.01.005","DOIUrl":null,"url":null,"abstract":"<div><p><span><span><span><span>In creep-strength-enhanced ferritic steels, hydrogen-induced cold cracking of </span>weldments is a serious issue. In the present research work, the effect of cooling medium on </span>tensile properties<span><span><span> and microstructure evolution of P91 steel weldments has been studied. For water-cooling condition, the </span>diffusible hydrogen metal in deposited metal was measured by the mercury method. The microstructure of weldments in different cooling condition was characterized by using the field-emission scanning electron microscope (FE-SEM) and </span>optical microscope<span>. The fractured tensile test samples were characterized using the FE-SEM. The maximum </span></span></span>tensile strength was measured to be 624</span> <!-->MPa for air-cooling medium (very low level of diffusible hydrogen).</p></div>","PeriodicalId":101145,"journal":{"name":"Science and Technology of Materials","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.stmat.2018.01.005","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Science and Technology of Materials","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2603636318300150","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 2
Abstract
In creep-strength-enhanced ferritic steels, hydrogen-induced cold cracking of weldments is a serious issue. In the present research work, the effect of cooling medium on tensile properties and microstructure evolution of P91 steel weldments has been studied. For water-cooling condition, the diffusible hydrogen metal in deposited metal was measured by the mercury method. The microstructure of weldments in different cooling condition was characterized by using the field-emission scanning electron microscope (FE-SEM) and optical microscope. The fractured tensile test samples were characterized using the FE-SEM. The maximum tensile strength was measured to be 624 MPa for air-cooling medium (very low level of diffusible hydrogen).
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