ISSN   1004-0595

CN  62-1095/O4

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王兰, 王树奇, 李新星, 周银, 张秋阳. TC4合金干滑动磨损性能的研究[J]. 摩擦学学报, 2015, 35(5): 629-634. DOI: 10.16078/j.tribology.2015.05.016
引用本文: 王兰, 王树奇, 李新星, 周银, 张秋阳. TC4合金干滑动磨损性能的研究[J]. 摩擦学学报, 2015, 35(5): 629-634. DOI: 10.16078/j.tribology.2015.05.016
WANG Lan, WANG Shu-qi, LI Xin-xing, ZHOU Yin, ZHANG Qiu-yang. Dry Sliding Wear Performance of TC4 Alloy[J]. TRIBOLOGY, 2015, 35(5): 629-634. DOI: 10.16078/j.tribology.2015.05.016
Citation: WANG Lan, WANG Shu-qi, LI Xin-xing, ZHOU Yin, ZHANG Qiu-yang. Dry Sliding Wear Performance of TC4 Alloy[J]. TRIBOLOGY, 2015, 35(5): 629-634. DOI: 10.16078/j.tribology.2015.05.016

TC4合金干滑动磨损性能的研究

Dry Sliding Wear Performance of TC4 Alloy

  • 摘要: 在MG-2000销盘式磨损试验机上考察了TC4/GCr15摩擦体系中, TC4合金的磨损行为. 利用SEM、XRD对合金磨面、剖面形貌及结构进行观察与分析, 利用HVS-1000显微硬度计测试磨面至心部的硬度, 利用激光共聚焦显微镜测试和观察磨面的粗糙度及三维形貌. 结果表明: TC4合金的磨面形成了摩擦层, 其分为有氧化物摩擦层和无氧化物摩擦层, 无氧化物摩擦层对磨面无保护作用, 合金磨损率较高; 有氧化物摩擦层对磨面具有保护作用. 在600℃, 摩擦层中含有大量摩擦氧化物, 对磨面具有最佳的保护作用, 合金磨损率最低, TC4合金具有优异的高温磨损性能. 磨面粗糙度和摩擦层中的氧化物数量密切相关, 在600 ℃, 磨面被大量光滑氧化物所覆盖, 磨面粗糙度最低, 略高于磨损前的表面粗糙度.

     

    Abstract: Wear behaviors of TC4 alloy in TC4/GCr15 tribo-system were investigated on a MG-2000 type pin-on-disk wear tester. The morphologies, cross-section morphologies and structure of worn surfaces were observed and analyzed with scanning electron microscopy and X-ray diffraction. The hardness profile from the worn surface to the matrix was measured using HVS-1000 type digital microhardness tester, the roughness and 3D profile were measured and observed by CLSM. The results show that tribo-layers were formed on the worn surfaces of TC4 alloy, which were divided into no-oxides tribo-layer and tribo-oxide layer. No-oxides tribo-layer had no protective function while tribo-oxide layer had protection for worn surface. At 600℃, tribo-layer containing a large amount of tribo-oxides had the best protective function and TC4 alloy possessed the lowest wear rate, TC4 alloy presents excellent high temperature wear performance. The roughness of worn surface was closely related with the amount of tribo-oxide in tribo-layer, at 600℃, worn surface was covered with many dark smooth oxides, worn surface had the lowest roughness, which was slightly higher than that before wearing.

     

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