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Wear characteristics and prediction of wheel profiles in high-speed trainsHAN Peng(韩鹏)1, ZHANG Wei-hua(张卫华)1, LI Yan(李艳)2(1. State key Laboratory of Traction Power (Southwest Jiaotong University), Chengdu 610031, China;2. China Railway Eryuan Engineering Group Co. Ltd, Chengdu 610031, China)Abstract:Wheel/rail relationship is a fundamental problem of railway system. Wear of wheel profiles has......
mass loss of specimen and counter-specimen. The wear behavior of the tested frictional pairs was determined by 3D interference microscopy, scanning electron microscopy equipped with EDS microanalyzer... of material from the surface of solids. This phenomenon is caused by the friction, and manifested by a continuous change of dimensions and shapes of the frictional pair. The causes of wear are in most......
. At the same time, high relative motion generates more frictional heat, which improves the contact temperature. As the contact temperature increases, the alloy in the wear system is prone to plastic deformation...Trans. Nonferrous Met. Soc. China 26(2016) 406-413 Wear behavior of Mg-10Y-4Gd-1.5Zn-0.4Zr alloy Mao-liang HU1, Qu-dong WANG2, Ze-sheng JI1, Hong-yu XU1, Ming-de XIN1, Guo-rui MA3 1. School......
in the debris in addition to the magnesium peak, as shown in Fig. 6. This wear mechanism is referred as the oxidational wear, frictional heating during sliding leads to the surface oxidation, with wear occurring... in the ultra-severe wear regime. Further increasing sliding velocity and applied load leads higher contact temperatures between specimen and steel disc and also raising frictional heat concludes......
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was identified as the main wear mechanism for Al/SiC and Al/SiC/MoS2 composites. The frictional traces and worn surfaces of Al/SiC/MoS2 composites approached to those of Al/SiC composites, indicating... μm) are also observed. The wear sheets of Al/MoS2 disks are even thicker than those of unreinforced aluminum (Fig. 8(b)). This is because of the lower hardness and frictional stress on the wear surface......
Trans. Nonferrous Met. Soc. China 22(2012) 1001-1011 Effect of Al-TiB master alloy addition on microstructure, wear and compressive deformation behaviour of aluminum alloys D. P. MONDAL, Nidhi JHA... was added in various proportions in 7178 Al alloy in order to examine the effect of TiB on grain refinement, wear and compressive deformation of the later one. Microstructural characterization reveals......
of the friction and wear behaviour of heat resistant magnesium alloy at high temperatures, especially, the effect of frictional heating on wear mechanisms during sliding in the tests at high temperatures... at high temperatures under dry sliding conditions using a pin-on-disc wear testing machine. The results indicate that the wear rate increases with the increase of applied load and sliding distance......
; 2. School of Materials Science and Engineering, Central South University, Changsha 410083, China) Abstract: The friction and wear behaviors of WC-(5, 7, 9)Ni/SiC friction couples were tested by a MMU-10 frictional tester at different applied pressures and speeds under dry sliding condition, and the morphologies of worn surface were observed by scanning electron microscopy (SEM). The results......
by powder metallurgy technology. The effect of graphite morphology on the tribological behavior for the Ag-SG and Ag-FG under the dry sliding wear was investigated with a pin-on-disk tribometer at a load of 3.0 N in atmosphere condition. The results indicated that the minimum wear rate of 3.5×10-5 mm3/(N·m) for Ag-FG was achieved and it reduced by nearly an order of magnitude, reaching 1.6×10-6 mm3/(N·m......
