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='null', 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, 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}, 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.
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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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1 Inner Mongolia Baotou Steel Rare Earth Steel Plate Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, China), AuthorCompanyExt(id=1187341820531978812, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1187341681721487722, companyId=1187341820519395898, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1 内蒙古包钢稀土钢板材公司有限责任公司, 内蒙古 包头 014010)]), AuthorCompany(id=1187341820620059198, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1187341681721487722, xref=2, ext=[AuthorCompanyExt(id=1187341820645225023, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1187341681721487722, companyId=1187341820620059198, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2 School of Materials and Metallurgy, Inner Mongolia University of Science and Technology, Baotou 014010, Inner Mongolia Autonomous Region, China), AuthorCompanyExt(id=1187341820653613632, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1187341681721487722, companyId=1187341820620059198, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2 内蒙古科技大学 材料与冶金学院, 内蒙古 包头 014010)])], figs=[ArticleFig(id=1187341823480574618, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1187341681721487722, language=EN, label=null, caption=null, figureFileSmall=7qESGlNrNsqP9WEHRRWzQA==, figureFileBig=hKO6kQuz3t2C5QUCXHYCTg==, tableContent=null), ArticleFig(id=1187341823564460700, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1187341681721487722, language=CN, label=图1, caption=
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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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| 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/℃ |
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| 230 | 25~40 | 15~30 |
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| 铸坯厚度/mm | 过热度/℃ |
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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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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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