| 轧后不同冷却方式下U76CrRE重轨钢的摩擦磨损性能 |
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| 引用本文： | 计春娇,岑耀东,张良,陈林,郭曜珲. 轧后不同冷却方式下U76CrRE重轨钢的摩擦磨损性能[J]. 金属热处理, 2023, 48(3): 203-208. DOI: 10.13251/j.issn.0254-6051.2023.03.033 |
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| 作者姓名： | 计春娇 岑耀东 张良 陈林 郭曜珲 |
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| 作者单位： | 内蒙古科技大学 材料与冶金学院,内蒙古 包头 014010;包头北方创业有限责任公司,内蒙古 包头 014010 |
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| 基金项目： | 内蒙古自治区研究生科研创新项目——重轨钢U76Cr疲劳裂纹尖端力学行为研究(S20210148Z);内蒙古自治区直属高校基本科研业务费项目——先进高耐腐蚀性热浸镀锌板的镀层组织控制及粘附性研究;内蒙古科技大学创新基金(2019QDL-B06) |
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| 摘 要： | 以不同冷却方式下的U76CrRE重轨钢为研究对象,采用摩擦磨损试验机、SEM(扫描电镜)、EDX(能谱仪)、CLSM(激光共聚焦显微镜)等测试分析了钢轨在水摩擦、干摩擦、沙摩擦3种条件下的摩擦因数、磨损量、微观组织及磨损面的合金元素成分。结果表明,在相同的磨损时间下,风冷试样的平均摩擦因数比空冷试样的小,且在沙摩擦情况下,风冷试样的磨损量远小于空冷试样;风冷试样经水摩擦后存在少量划痕,出现剥落坑,为分层磨损,干摩擦下存在犁痕,同时在犁脊上出现横裂纹,为氧化磨损,沙摩擦下出现大量的沙粒和磨屑,磨损的最严重,属于磨粒磨损,且空冷试样表面磨痕平整,犁沟更为明显;风冷试样的变形层均小于空冷试样,而且沙摩擦的变形层最大。风冷条件下的U76CrRE重轨钢比空冷条件下具有更好的耐磨性。
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| 关 键 词： | U76CrRE重轨钢 轧后冷却 摩擦磨损 磨损量 摩擦因数 |
| 收稿时间： | 2022-09-30 |
Friction and wear performance of U76CrRE heavy rail steel under different post-rolling cooling modes |
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| Ji Chunjiao,Cen Yaodong,Zhang Liang,Chen Lin,Guo Yaohui. Friction and wear performance of U76CrRE heavy rail steel under different post-rolling cooling modes[J]. Heat Treatment of Metals, 2023, 48(3): 203-208. DOI: 10.13251/j.issn.0254-6051.2023.03.033 |
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| Authors: | Ji Chunjiao Cen Yaodong Zhang Liang Chen Lin Guo Yaohui |
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| Affiliation: | 1. School of Materials and Metallurgy, Inner Mongolia University of Science and Technology, Baotou Inner Mongolia 014010, China; 2. Baotou Beifang Chuangye Co., Ltd., Baotou Inner Mongolia 014010, China |
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| Abstract: | Taking U76CrRE heavy rail steel under different post-rolling cooling modes as the research object, the friction factor, wear amount, microstructure and wear-surface alloy element composition of the rail under water friction, dry friction and sand friction were analyzed by means of friction and wear tester, SEM (scanning electron microscope), EDX (energy dispersive spectrometer) and CLSM (laser confocal microscope). The results show that under same wear time, the average friction coefficient of air-blast-cooled specimen is smaller than that of air-cooled specimen, and the wear amount of air-blast-cooled specimen is much less than that of air-cooled specimen under sand friction. For the air-blast-cooled specimen, a small amount of scratches and peeling are formed after water friction, which are delamination wear; there are plough marks under dry friction and transverse cracks on the plough ridge, which are oxidized wear; and under sand friction, a large amount of wear debris appears and the most serious wear is abrasive wear. And the surface of the air-cooled specimen is flat and the pear groove is more obvious. The deformation layers of the air-blast-cooled specimens are all smaller than that of the air-cooled specimen, and the sand friction deformation layer is the largest. The U76CrRE heavy rail steel under air-blast-cooling has better wear resistance than that under air cooling. |
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| Keywords: | U76CrRE heavy rail steel post-rolling cooling frictional wear wearing capacity friction coefficient |
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