| Ti-46Al-2Cr-2Nb和Ti6Al4V合金的干摩擦学性能对比研究 |
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| 引用本文： | 乔竹辉,程军,李斐,马吉强,符立才,杨军.Ti-46Al-2Cr-2Nb和Ti6Al4V合金的干摩擦学性能对比研究[J].摩擦学学报,2013,33(3):275-281. |
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| 作者姓名： | 乔竹辉 程军 李斐 马吉强 符立才 杨军 |
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| 作者单位： | 1. 中国科学院兰州化学物理研究所固体润滑国家重点实验室,甘肃兰州,730000
2. 中国科学院兰州化学物理研究所固体润滑国家重点实验室,甘肃兰州730000;中国科学院大学,北京100039 |
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| 基金项目： | 国家自然科学基金项目(51275507和51202258)资助. |
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| 摘 要： | 本文以商业Ti-6Al-4V合金为参照,考察了Ti-46Al-2Cr-2Nb(原子比)金属间化合物在不同载荷和速率下的干摩擦学行为,结果表明:Ti-46Al-2Cr-2Nb和Ti6Al4V合金的摩擦系数几乎相同,而Ti-46Al-2Cr-2Nb金属间化合物比Ti-6Al-4V具有更好的抗磨性；Ti-46Al-2Cr-2Nb和Ti6Al4V合金的磨损率均随载荷的增加而增加,Ti-46Al-2Cr-2Nb合金磨损率随滑动速率增加而增加,Ti-6Al-4V合金磨损率却随滑动速率增加呈下降直至稳定的趋势；Ti-46Al-2Cr-2Nb合金的磨损机制主要为疲劳磨损,Ti-6Al-4V合金的磨损机制为塑性变形,犁沟和剥落.
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| 关 键 词： | TiAl金属间化合物 磨损 摩擦 |
Comparison on Dry Sliding Tribological Behavior of Ti-46Al-2Cr-2Nb and Ti6Al4V Alloys |
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| QIAO Zhu-hui,CHENG Jun,LI Fei,MA Ji-qiang,FU Li-cai and YANG Jun.Comparison on Dry Sliding Tribological Behavior of Ti-46Al-2Cr-2Nb and Ti6Al4V Alloys[J].Tribology,2013,33(3):275-281. |
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| Authors: | QIAO Zhu-hui CHENG Jun LI Fei MA Ji-qiang FU Li-cai and YANG Jun |
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| Institution: | State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China;1. State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China;2. University of Chinese Academy of Sciences, Beijing 100039, China;State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China;State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China;State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China;State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China |
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| Abstract: | The dry-sliding tribological behavior of a Ti-46Al-2Cr-2Nb intermetallic alloy was investigated. For comparative purposes, the tribological behavior of a common Ti-6Al-4V alloy was also examined under the same testing conditions. It was found that the wear resistance of the Ti-46Al-2Cr-2Nb alloy is superior to that of the commercial Ti-6Al-4V alloy. The friction coefficient of both the alloys is comparable. The wear rates of both the Ti-46Al-2Cr-2Nb and Ti-6Al-4V alloys increases with increasing applied load. The wear rate of the Ti-46Al-2Cr-2Nb alloy increases with increasing the sliding speed, but the opposite is true for Ti-6Al-4V alloy. The wear mechanism of the Ti-46Al-2Cr-2Nb alloy is fatigue wear, but that of Ti-6Al-4V alloy is dominated by plastic deformation, plowing and delamination. |
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| Keywords: | TiAl intermetallics wear friction |
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