Article(id=1188049103670882356, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1188049099627574244, articleNumber=1009-5438(2024)02-0063-06, orderNo=null, doi=null, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1707926400000, receivedDateStr=2024-02-15, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1761182579199, onlineDateStr=2025-10-23, pubDate=1713974400000, pubDateStr=2024-04-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1761182579199, onlineIssueDateStr=2025-10-23, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1761182579199, creator=13701087609, updateTime=1761182579199, 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='null', 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, 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}, startPage=63, endPage=68, ext={EN=ArticleExt(id=1188049105377964118, articleId=1188049103670882356, tenantId=1146029695717560320, journalId=1185652524569653253, language=EN, title=Experimental Study on Wear Resistance of On Line Heat Treated U20MnH Rail, columnId=1187095652984042303, journalTitle=Science & Technology of Baotou Steel, columnName=Variety Quality and Experimental Study, runingTitle=null, highlight=null, articleAbstract=
The characteristics and change rules of wear behavior for rail with different load conditions are analyzed through experimental study on wear of on line heat treated U20MnH rail combining with the morphology features of wear surface and profile for samples observed by microscope and scanning electron microscope. The results showed that the wear loss of on line heat treated U20MnH rail was significantly reduced with increase of load under load conditions of 1 200 N, 1 500 N and 1 800 N respectively.
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通过对在线热处理U20MnH钢轨进行磨损试验研究,并结合显微镜和扫描电镜观测到的试样磨损表面和剖面的形貌特征,分析了不同载荷条件下钢轨的磨损行为特征和变化规律。结果表明:分别在1 200 N、1 500 N、1 800 N载荷的条件下,在线热处理U20MnH钢轨磨损量随载荷的增大而显著减小。
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李培德(1965-),男,河北省阳原县人,高级工程师,现从事金属材料物理性能研究及检测工作。
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李培德(1965-),男,河北省阳原县人,高级工程师,现从事金属材料物理性能研究及检测工作。
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李培德(1965-),男,河北省阳原县人,高级工程师,现从事金属材料物理性能研究及检测工作。
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载荷为1 200 N试样摩擦面微观形貌, figureFileSmall=uG56WzZ5iTCrS1LuT8+HqA==, figureFileBig=MTbj/ScWjSUFH1KbP8vuxg==, tableContent=null), ArticleFig(id=1188503466847650165, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1188049103670882356, language=EN, label=null, caption=null, figureFileSmall=1Dj4LguAfV01VlZVlWtt2w==, figureFileBig=eR2/9/QGC1BJ2Vh15bzhKw==, tableContent=null), ArticleFig(id=1188503466906370422, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1188049103670882356, language=CN, label=图13, caption=
载荷为1 500 N试样摩擦面微观形貌, figureFileSmall=1Dj4LguAfV01VlZVlWtt2w==, figureFileBig=eR2/9/QGC1BJ2Vh15bzhKw==, tableContent=null), ArticleFig(id=1188503466965090679, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1188049103670882356, language=EN, label=null, caption=null, figureFileSmall=uegAwDnVDQq6IkDSv+rlIw==, figureFileBig=joHEWs9XhT/tSBQlBuEDMw==, tableContent=null), ArticleFig(id=1188503467023810936, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1188049103670882356, language=CN, label=图14, caption=
载荷为1 800 N试样摩擦面微观形貌, figureFileSmall=uegAwDnVDQq6IkDSv+rlIw==, figureFileBig=joHEWs9XhT/tSBQlBuEDMw==, tableContent=null), ArticleFig(id=1188503467090919801, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1188049103670882356, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| C | Si | Mn | P | S | Al | Cr+Ni+Mo |
| 0.1~0.25 | 0.5~1.5 | 1.4~2.5 | 0.007 | 0.003 | 0.006 | 0.8~2.6 |
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U20MnH钢轨化学成分(质量分数) %
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| C | Si | Mn | P | S | Al | Cr+Ni+Mo |
| 0.1~0.25 | 0.5~1.5 | 1.4~2.5 | 0.007 | 0.003 | 0.006 | 0.8~2.6 |
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抗拉强度 /MPa | 屈服强度 /MPa | 延伸率 /% | 冲击功 /J | 踏面硬度 (HB) |
| 1 395 | 1 250 | 14.5 | 116 | 431 |
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U20MnH钢轨力学性能
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抗拉强度 /MPa | 屈服强度 /MPa | 延伸率 /% | 冲击功 /J | 踏面硬度 (HB) |
| 1 395 | 1 250 | 14.5 | 116 | 431 |
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| 磨耗周次 | 1 200 N | 1 500 N | 1 800 N |
| 0~2万 | 0.057 | 0.038 | 0.020 |
| 2万~4万 | 0.055 | 0.035 | 0.019 |
| 4万~6万 | 0.056 | 0.036 | 0.021 |
| 6万~8万 | 0.058 | 0.037 | 0.017 |
| 8万~10万 | 0.054 | 0.035 | 0.021 |
| 总磨损量 | 0.280 | 0.181 | 0.098 |
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不同载荷下U20MnH钢轨的磨损量 g
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| 磨耗周次 | 1 200 N | 1 500 N | 1 800 N |
| 0~2万 | 0.057 | 0.038 | 0.020 |
| 2万~4万 | 0.055 | 0.035 | 0.019 |
| 4万~6万 | 0.056 | 0.036 | 0.021 |
| 6万~8万 | 0.058 | 0.037 | 0.017 |
| 8万~10万 | 0.054 | 0.035 | 0.021 |
| 总磨损量 | 0.280 | 0.181 | 0.098 |
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| 试样 | 母材 | 1 200 N | 1 500 N | 1 800 N |
| 配样(CL60车轮) | 264 | 406 | 472 | 501 |
| 主样(U20MnH钢轨) | 431 | 527 | 559 | 586 |
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不同载荷下主样与配样摩擦面显微维氏硬度(HV0.1)变化
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| 试样 | 母材 | 1 200 N | 1 500 N | 1 800 N |
| 配样(CL60车轮) | 264 | 406 | 472 | 501 |
| 主样(U20MnH钢轨) | 431 | 527 | 559 | 586 |
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