Article(id=1187341681721487722, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1187341678487679284, articleNumber=1009-5438(2022)02-0063-04, orderNo=null, doi=null, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1644422400000, receivedDateStr=2022-02-10, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1761013916663, onlineDateStr=2025-10-21, pubDate=1650816000000, pubDateStr=2022-04-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1761013916663, onlineIssueDateStr=2025-10-21, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1761013916663, creator=13701087609, updateTime=1761013916663, updator=13701087609, issue=Issue{id=1187341678487679284, tenantId=1146029695717560320, journalId=1185652524569653253, year='2022', volume='48', issue='2', pageStart='1', pageEnd='98', issueExtLink='null', onlineDate='null', pubDate='1650816000000', pubDateStr='2022-04-25', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1761013915892, creator='13701087609', updateTime=1761015806887, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1187349609945907689, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1187341678487679284, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1187349609945907690, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1187341678487679284, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=63, endPage=66, ext={EN=ArticleExt(id=1187341681931202923, articleId=1187341681721487722, tenantId=1146029695717560320, journalId=1185652524569653253, language=EN, title=Effects of Nb on Microstructure and Properties of 650 MPa Grade High Strength Steel, columnId=1187340471245357385, journalTitle=Science & Technology of Baotou Steel, columnName=Quality of Variety and Experiment and Research, runingTitle=null, highlight=null, articleAbstract=

In this paper, the effects of Nb with different contents on the microstructure and properties of high strength steel are discussed by taking the hot rolled coils with 650 MPa grade structural steel as research object. The data showed that the yield strength of high strength structural steel reduced by about 15 MPa, tensile strength reduced by about 25 MPa and elongation rate increased by about 1 percentage point with reducing content of Nb by 0.010%. It is found that the fine oval precipitates are rich in Nb and square precipitates are rich in Ti in the high strength steel containing niobium and titanium by comparing the microstructures with transmission electron microscope.

, authors=null, authorsList=Zhao Li, Yan Liu, Cheng Su, Peng-cheng Liu, Li-ping Zhao, Jian-hua Chen, 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=1187341820318069303, articleId=1187341681721487722, tenantId=1146029695717560320, journalId=1185652524569653253, language=CN, title=Nb元素对650 MPa级高强钢组织和性能的影响, columnId=1185887584472417142, journalTitle=包钢科技, columnName=品种质量与试验研究, runingTitle=null, highlight=null, articleAbstract=

文章以650 MPa级结构钢热轧卷板为研究对象,讨论了不同含量的Nb元素对高强钢组织和性能的影响。数据显示,Nb含量降低0.010%,高强结构钢屈服强度下降约15 MPa,抗拉强度下降约25 MPa,延伸率上升约1个百分点。对比透射电镜下的显微组织得出,含铌钛高强钢中,细小椭圆形析出物富含Nb元素,方形析出物富含Ti元素。

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李 钊(1986-),男,山西省大同市人,硕士,工程师,现从事新产品研发和推广工作。

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李 钊(1986-),男,山西省大同市人,硕士,工程师,现从事新产品研发和推广工作。

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C	Si	Mn	P	S	Nb	Ti	Alt	Ca
0.06~0.08	≤0.15	1.50~1.70	≤0.018	≤0.005	0.020~0.030	0.050~0.070	0.020~0.050	0.001 0~0.003 0

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650 MPa级高强结构钢化学成分(质量分数)%

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C	Si	Mn	P	S	Nb	Ti	Alt	Ca
0.06~0.08	≤0.15	1.50~1.70	≤0.018	≤0.005	0.020~0.030	0.050~0.070	0.020~0.050	0.001 0~0.003 0

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铸坯厚度/mm	过热度/℃
	第一炉	其它
230	25~40	15~30

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连铸工艺参数

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铸坯厚度/mm	过热度/℃
	第一炉	其它
230	25~40	15~30

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加热炉出炉 温度/℃	粗轧中间坯 厚度/mm	精轧终轧 温度/℃	卷取温度 /℃	层冷 模式
1 250	40	880	600	前分散11

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热轧工艺参数

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加热炉出炉 温度/℃	粗轧中间坯 厚度/mm	精轧终轧 温度/℃	卷取温度 /℃	层冷 模式
1 250	40	880	600	前分散11

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