Article(id=1187088801810760225, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1187088798216241684, articleNumber=1009-5438(2022)04-0051-04, orderNo=null, doi=null, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1651161600000, receivedDateStr=2022-04-29, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1760953625394, onlineDateStr=2025-10-20, pubDate=1661356800000, pubDateStr=2022-08-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1760953625394, onlineIssueDateStr=2025-10-20, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1760953625394, creator=13701087609, updateTime=1760953625394, updator=13701087609, issue=Issue{id=1187088798216241684, tenantId=1146029695717560320, journalId=1185652524569653253, year='2022', volume='48', issue='4', 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=1760953624537, creator=13701087609, updateTime=1760953945042, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1187090142570365089, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1187088798216241684, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1187090142570365090, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1187088798216241684, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=51, endPage=54, ext={EN=ArticleExt(id=1187340471329243466, articleId=1187088801810760225, tenantId=1146029695717560320, journalId=1185652524569653253, language=EN, title=Effects of Rare Earth Ce on Low Temperature Toughness of Hot Rolled U75V Rail, columnId=1187340471245357385, journalTitle=Science & Technology of Baotou Steel, columnName=Quality of Variety and Experiment and Research, runingTitle=null, highlight=null, articleAbstract=
The smelting and rolling of hot rolled U75V rails with different contents of rare earth Ce are carried out in laboratory. The low temperature impacting property and fracture toughness of the rolled rail are compared and analyzed. The test results showed that the impact toughness of rail at room temperature could increase by about 30%, low temperature impacting property at -60 ℃ could increase by about 60% after add 0.005 6% rare earth Ce into hot rolled U75V rail; the average value of -20 ℃ KIC of rail increased by about 14% and the average value of -60 ℃ KIC of rail increased by about 15% so that the addition of rare earth Ce could further improve the low temperature toughness of hot rolled U75V rail.
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在实验室进行了不同稀土Ce含量的热轧态U75V钢轨冶炼及轧制,重点针对轧后钢轨低温冲击性能、低温断裂韧性进行对比分析。试验结果表明,热轧态U75V钢轨加入0.005 6%稀土Ce后,钢轨常温冲击韧性可提高30%左右,-60 ℃低温冲击韧性可提高60%左右;钢轨-20 ℃ KIC平均值提高14%左右,钢轨-60 ℃ KIC平均值提高15%左右,稀土Ce的加入进一步提升了热轧态U75V钢轨低温韧性。
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张凤明(1987-),男,内蒙古赤峰市人,工程师,现从事钢轨产品研发工作。
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张凤明(1987-),男,内蒙古赤峰市人,工程师,现从事钢轨产品研发工作。
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张凤明(1987-),男,内蒙古赤峰市人,工程师,现从事钢轨产品研发工作。
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22(4):31-36., articleTitle=钢中稀土微合金化作用与应用前景, refAbstract=null), Reference(id=1187340593891000972, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1187088801810760225, doi=null, pmid=null, pmcid=null, year=null, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=[3], rfOrder=2, authorNames=null, journalName=TB/T 2344.1—2020,钢轨第1部分:43-75 kg/m钢轨, refType=null, unstructuredReference=
TB/T 2344.1—2020,钢轨第1部分:43-75 kg/m钢轨[S]., articleTitle=null, refAbstract=null)], funds=null, companyList=[AuthorCompany(id=1187340591491859041, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1187088801810760225, xref=null, ext=[AuthorCompanyExt(id=1187340591504441954, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1187088801810760225, companyId=1187340591491859041, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=Technical Center of Inner Mongolia Baotou Steel Union Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, China), AuthorCompanyExt(id=1187340591517024867, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1187088801810760225, companyId=1187340591491859041, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=内蒙古包钢钢联股份有限公司技术中心,内蒙古 包头 014010)])], figs=[ArticleFig(id=1187340592943088254, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1187088801810760225, language=EN, label=null, caption=null, figureFileSmall=Aicm5dXCYRYsSf9QK3cExg==, figureFileBig=hY9xeXmbVZ+y+j0TqTvS5A==, tableContent=null), ArticleFig(id=1187340593001808511, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1187088801810760225, language=CN, label=图1, caption=
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不同温度下试验钢断裂韧性KIC平均值变化, figureFileSmall=eQymDdxA3p2RfZibekjHdg==, figureFileBig=W5jOTa4nC8DYPfZP30Jvww==, tableContent=null), ArticleFig(id=1187340593186357890, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1187088801810760225, language=EN, label=null, caption=null, figureFileSmall=H5bbMwTjdyX/94IbpLAtGQ==, figureFileBig=h7S4v8aS30d5el0Kr4nY3A==, tableContent=null), ArticleFig(id=1187340593249272451, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1187088801810760225, language=CN, label=图3, caption=
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| 编号 | C | Si | Mn | V | Ce | P | S |
| 1# | 0.760 | 0.635 | 0.908 | 0.071 | | 0.018 | 0.001 |
| 2# | 0.758 | 0.630 | 0.972 | 0.071 | 0.002 3 | 0.017 | 0.001 |
| 3# | 0.758 | 0.639 | 1.010 | 0.073 | 0.005 6 | 0.014 | 0.001 |
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试验钢冶炼化学成分(质量分数) %
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| 编号 | C | Si | Mn | V | Ce | P | S |
| 1# | 0.760 | 0.635 | 0.908 | 0.071 | | 0.018 | 0.001 |
| 2# | 0.758 | 0.630 | 0.972 | 0.071 | 0.002 3 | 0.017 | 0.001 |
| 3# | 0.758 | 0.639 | 1.010 | 0.073 | 0.005 6 | 0.014 | 0.001 |
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| 编号 | 抗拉强度Rm/MPa | 屈服强度Rp0.2/MPa | 断后延伸率A/% | 断面收缩率Z/% | 踏面硬度(HBW) |
| 1# | 1 020 | 545 | 12.75 | 22.5 | 303 |
| 2# | 1 040 | 571 | 13.50 | 23.5 | 309 |
| 3# | 1 045 | 576 | 14.75 | 25.5 | 309 |
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试验钢的常规力学性能对比
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| 编号 | 抗拉强度Rm/MPa | 屈服强度Rp0.2/MPa | 断后延伸率A/% | 断面收缩率Z/% | 踏面硬度(HBW) |
| 1# | 1 020 | 545 | 12.75 | 22.5 | 303 |
| 2# | 1 040 | 571 | 13.50 | 23.5 | 309 |
| 3# | 1 045 | 576 | 14.75 | 25.5 | 309 |
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| 试验温度/℃ | 1#试验钢 | 2#试验钢 | 3#试验钢 |
| 20 | 38.7 | 35.9 | 40.8 | 39.2 | 43.6 | 40.8 | 41.3 | 42.8 | 45.5 |
| 0 | 33.9 | 36.1 | 38.4 | 42.6 | 34.4 | 39.1 | 42.2 | 39.7 | 41.5 |
| -20 | 32.8 | 34.0 | 31.9 | 36.2 | 35.2 | 35.9 | 38.4 | 35.4 | 39.1 |
| -40 | 29.6 | 30.2 | 28.8 | 29.0 | 31.4 | 30.7 | 33.3 | 35.0 | 31.4 |
| -60 | 26.3 | 24.5 | 28.0 | 27.6 | 29.7 | 28.8 | 28.6 | 31.5 | 30.7 |
), ArticleFig(id=1187340593635148425, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1187088801810760225, language=CN, label=表3, caption=
试验钢不同温度下断裂韧性KIC值 MPa·m1/2
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| 试验温度/℃ | 1#试验钢 | 2#试验钢 | 3#试验钢 |
| 20 | 38.7 | 35.9 | 40.8 | 39.2 | 43.6 | 40.8 | 41.3 | 42.8 | 45.5 |
| 0 | 33.9 | 36.1 | 38.4 | 42.6 | 34.4 | 39.1 | 42.2 | 39.7 | 41.5 |
| -20 | 32.8 | 34.0 | 31.9 | 36.2 | 35.2 | 35.9 | 38.4 | 35.4 | 39.1 |
| -40 | 29.6 | 30.2 | 28.8 | 29.0 | 31.4 | 30.7 | 33.3 | 35.0 | 31.4 |
| -60 | 26.3 | 24.5 | 28.0 | 27.6 | 29.7 | 28.8 | 28.6 | 31.5 | 30.7 |
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