Article(id=1188049101506625731, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1188049099627574244, articleNumber=1009-5438(2024)02-0028-04, orderNo=null, doi=null, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1705766400000, receivedDateStr=2024-01-21, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1761182578684, onlineDateStr=2025-10-23, pubDate=1713974400000, pubDateStr=2024-04-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1761182578684, onlineIssueDateStr=2025-10-23, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1761182578684, creator=13701087609, updateTime=1761182578684, updator=13701087609, issue=Issue{id=1188049099627574244, tenantId=1146029695717560320, journalId=1185652524569653253, year='2024', volume='50', issue='2', pageStart='1', pageEnd='98', issueExtLink='null', onlineDate='null', pubDate='1713974400000', pubDateStr='2024-04-25', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1761182578236, creator='13701087609', updateTime=1761291001661, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1188503860504052243, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1188049099627574244, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1188503860504052244, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1188049099627574244, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=28, endPage=31, ext={EN=ArticleExt(id=1188049101741506760, articleId=1188049101506625731, tenantId=1146029695717560320, journalId=1185652524569653253, language=EN, title=Analysis on CCT (Continuous Cooling Transformation) Curve of 345 MPa Grade Fire-resistant Steel, columnId=1187095652984042303, journalTitle=Science & Technology of Baotou Steel, columnName=Variety Quality and Experimental Study, runingTitle=null, highlight=null, articleAbstract=
The characteristics of continuous cooling transformation of fire-resistant test steel are analyzed as well as its microstructure at different cooling rates within 1~100 ℃/s are observed through drawing the continuous cooling transformation(CCT) curve of 345 MPa grade fire-resistant test steel. The results showed that there were ferritic and perlitic transformations of test steel when cooling rate was 1 ℃/s; there were ferritic and bainite transformations of test steel when cooling rate was 8~20 ℃/s, pearlite completely disappeared, grain size was reduced and proportion of bainite structure was increased; microstructure transformation of test steel was mainly bainite transformation, proportion of ferritic transformation was very low and grain size was further reduced when cooling rate was 50~100 ℃/s; ferrite disappeared completely, all the microstructure was changed to bainite and was with obvious tendency of lath when cooling rate was increased to 100 ℃/s. The analysis of CCT curve and microstructure for fire-resistant test steel provides theoretical basis for formulating cooling processes in the production process of 345 MPa grade fire-resistant test steel.
, authors=null, authorsList=Yi-nan Yue, Ya-qiong Bai, Yan Jin, authorCompany=null, correspAuthors=null, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1188049197283557772, articleId=1188049101506625731, tenantId=1146029695717560320, journalId=1185652524569653253, language=CN, title=345 MPa级耐火钢CCT曲线分析, columnId=1185887584472417142, journalTitle=包钢科技, columnName=品种质量与试验研究, runingTitle=null, highlight=null, articleAbstract=
通过绘制345 MPa级耐火试验钢的连续冷却转变曲线(CCT曲线),分析了耐火试验钢的连续冷却转变特征,并观察在1~100 ℃/s间不同冷却速度下试验钢显微组织。结果显示,当冷速为1 ℃/s时,试验钢发生铁素体与珠光体转变;当冷速为8~20 ℃/s时,试验钢发生铁素体和贝氏体转变,珠光体完全消失,晶粒尺寸减小,贝氏体组织占比升高;当冷却速度在50~100 ℃/s之间时,试验钢的组织转变主要为贝氏体转变,铁素体转变占比很低,晶粒尺寸进一步减小;当冷速增加到100 ℃/s时,铁素体完全消失,组织全部变为贝氏体,且有明显的板条化倾向。通过对耐火试验钢的连续冷却转变曲线和显微组织分析,为345 MPa级耐火钢生产过程中冷却工艺的制定提供了理论依据。
, authors=
岳祎楠(1984-),男,内蒙古包头市人,硕士,高级工程师,现从事板材产品研发工作。
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岳祎楠(1984-),男,内蒙古包头市人,硕士,高级工程师,现从事板材产品研发工作。
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岳祎楠(1984-),男,内蒙古包头市人,硕士,高级工程师,现从事板材产品研发工作。
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| C | Si | Mn | P | S | Ti | Cr | Mo、Nb、V |
| 0.08 | 0.28 | 0.77 | 0.011 | 0.006 | 0.020 | 0.33 | ≤0.4 |
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试验钢化学成分(质量分数) %
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| C | Si | Mn | P | S | Ti | Cr | Mo、Nb、V |
| 0.08 | 0.28 | 0.77 | 0.011 | 0.006 | 0.020 | 0.33 | ≤0.4 |
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