Effect of Al on microstructure and impact property of surfacing repair layer of rail

Li, D; Gou, Guoqing; Liu, Yaling; Zhu, Tao; Hua, Jianmin; Chen, H

doi:10.1179/1743294411y.0000000078

Cited by 5 publications

(3 citation statements)

References 11 publications

(15 reference statements)

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“…Laser cladding technology is a material surface modification method for improving the wear resistance of alloys [6]. It can fabricate a coating with special physical, chemical, or mechanical properties using a high energy laser beam [7].…”

Section: Introductionmentioning

confidence: 99%

Investigation on the Microstructure and Wear Behavior of Laser-Cladded High Aluminum and Chromium Fe-B-C Coating

Chang

et al. 2020

Materials

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In this study, a high aluminum and chromium Fe-B-C coating was prepared using laser cladding on 2Cr13 steel substrate. The microstructure, microhardness, and wear resistance of the high aluminum and chromium Fe-B-C coating were investigated. The results show that this dense coating possesses good metallurgical bond with the substrate. The microstructure is mainly composed of α-(Fe, Cr, Al) lath martensite, orthorhombic M2B boride, orthogonal M3C2, and orthorhombic M7C3 carbides. The microhardness of the coating can reach 620 HV which is 3.3-times higher than that (190 HV) of the substrate. The coating shows a lower friction coefficient of 0.75 than that of the substrate (1.08). The wear rates of the substrate and the coating are 0.295 mg/min and 0.103 mg/min, respectively, indicating the coating exhibits excellent wear resistance. The wear mechanism transforms severe adhesive wear and abrasive wear of the substrate to slight abrasive wear of the coating. The results can provide technical support to improve the properties of the Fe-based laser cladded coating.

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Section: Introductionmentioning

confidence: 99%

Investigation on the Microstructure and Wear Behavior of Laser-Cladded High Aluminum and Chromium Fe-B-C Coating

Chang

et al. 2020

Materials

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“…11 Lewis et al 12 have assessed the tribological and fatigue performance of various laser cladding materials that could be used to repair damaged rail. Li et al 13 studied the effect of Al on microstructure and impact property of surfacing repair layer of rail. Moreover, laser surface modification has been studied and used to mitigate subsurface crack propagation in railroad rail.…”

Section: Introductionmentioning

confidence: 99%

“…Li et al. 13 studied the effect of Al on microstructure and impact property of surfacing repair layer of rail. Moreover, laser surface modification has been studied and used to mitigate subsurface crack propagation in railroad rail.…”

Section: Introductionmentioning

confidence: 99%

Effect of laser quenching on wear and damage of heavy-haul wheel/rail materials

Wang

Guo

Liu

et al. 2013

Proceedings of the Institution of Mechanical Engineers, Part J:

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In order to alleviate the wear of heavy-haul wheel/rail materials, the wear experiments of wheel/rail rollers undergoing laser quenching were carried out using rolling-sliding testing apparatus. The results indicate that laser quenching produces a hard martensite layer with a certain depth. The improvement of wear resistance of materials resulting from laser quenching markedly decreases the wear volume of wheel/rail rollers. The maximal decrease rate of wear volume of wheel and rail materials is about 92.9% and 89.5%, respectively. Furthermore, the worn surfaces of wheel/rail rollers present different surface morphology and damage mechanisms due to difference of hardness matching. When the surface hardness of wheel/rail rollers undergoing laser quenching is high, the spalling damage and adhesion wear are dominating. When a single wheel or rail roller undergoes laser quenching, the damage mechanism of wheel and rail rollers are significantly different. According to the severe wear region of the heavy-haul wheel/rail, it is proposed that the rail side and wheel flange may undergo laser quenching treatment for alleviating wear of heavy-haul wheel/rail materials. However, further work should be carried out for clarifying the fatigue characteristic of wheel/rail with laser quenching.

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Repair of light rail track through restoration of the worn part of the railhead using submerged arc welding process

Mortazavian

Wang

Teng

2020

Int J Adv Manuf Technol

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Effect of Al on microstructure and impact property of surfacing repair layer of rail

Cited by 5 publications

References 11 publications

Investigation on the Microstructure and Wear Behavior of Laser-Cladded High Aluminum and Chromium Fe-B-C Coating

Investigation on the Microstructure and Wear Behavior of Laser-Cladded High Aluminum and Chromium Fe-B-C Coating

Effect of laser quenching on wear and damage of heavy-haul wheel/rail materials

Repair of light rail track through restoration of the worn part of the railhead using submerged arc welding process

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