Article(id=1198550348362252527, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1198550344985837722, articleNumber=1009-5438(2023)05-0075-04, orderNo=null, doi=null, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1691769600000, receivedDateStr=2023-08-12, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1763686271037, onlineDateStr=2025-11-21, pubDate=1698163200000, pubDateStr=2023-10-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1763686271037, onlineIssueDateStr=2025-11-21, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1763686271037, creator=13701087609, updateTime=1763686271037, updator=13701087609, issue=Issue{id=1198550344985837722, tenantId=1146029695717560320, journalId=1185652524569653253, year='2023', volume='49', issue='5', pageStart='1', pageEnd='98', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1763686270233, creator=13701087609, updateTime=1764231160152, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1200835779015602647, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1198550344985837722, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1200835779015602648, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1198550344985837722, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=75, endPage=78, ext={EN=ArticleExt(id=1198550350568456536, articleId=1198550348362252527, tenantId=1146029695717560320, journalId=1185652524569653253, language=EN, title=Determination of Continuous Cooling Transformation (CCT) Curve for High Grade Large Diameter Heavy Gauge Pipeline Steel, columnId=1187095652984042303, journalTitle=Science & Technology of Baotou Steel, columnName=Variety Quality and Experimental Study, runingTitle=null, highlight=null, articleAbstract=

In this paper, the continuous cooling transformation (CCT) curve of X80 pipeline steel researched and developed in laboratory is determined. The determination results showed that the ideal microstructure of X80 pipeline steel could be obtained when cooling rate was 5~30 ℃/s, which was granular bainite + ferrite bainite + a small quantity of martensite/austenite island; the microstructure transformation was basically completed when finish cooling temperature was 450 ℃. The determination of CCT curve could provide references for subsequent optimization of composition design, establishment of process parameters and control of microstructure.

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文章对实验室研发的X80管线钢连续冷却转变曲线(CCT曲线)进行了测定,测定结果表明冷却速率在5~30 ℃/s时,X80管线钢可以获得理想组织,组织类型为粒状贝氏体+铁素体贝氏体+少量马氏体/奥氏体岛;终冷温度为450 ℃时组织转变基本完成。CCT曲线的确定为后续成分设计优化、工艺参数制定和组织控制提供借鉴。

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² Technical Center of Inner Mongolia Baotou Steel Union Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1198570140154557271, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550348362252527, authorId=1198570139940647756, language=CN, stringName=袁晓鸣, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=^{1, 2}, address=¹ 内蒙古科技大学材料与冶金学院(稀土学院),内蒙古 包头 014010
² 内蒙古包钢钢联股份有限公司技术中心,内蒙古 包头 014010, bio={"content":"

袁晓鸣(1983-),男,内蒙古包头市人,高级工程师,现从事宽厚板产品研发工作。

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袁晓鸣(1983-),男,内蒙古包头市人,高级工程师,现从事宽厚板产品研发工作。

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(a)750 ℃;(b)850 ℃;(c)900 ℃;(d)950 ℃

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C	Si	Mn	P	S	Cr	Mo	Nb	Ni	Ti	Cu
0.05	0.20	1.70	0.009	0.001	0.20	0.20	0.070	0.18	0.012	0.13

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试验钢化学成分(质量分数)%

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C	Si	Mn	P	S	Cr	Mo	Nb	Ni	Ti	Cu
0.05	0.20	1.70	0.009	0.001	0.20	0.20	0.070	0.18	0.012	0.13

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