Investigation on wear and rolling contact fatigue of wheel-rail materials under various wheel/rail hardness ratio and creepage conditions

Hu, Yue; Zhou, Liang; Ding, Haohao; Tan, Gang; Lewis, Roger; Liu, Q.Y.; Guo, Jun; Wang, W.J.

doi:10.1016/j.triboint.2019.106091

Cited by 96 publications

(30 citation statements)

References 41 publications

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“…The wear rates of PH and BH rail steels (Fig. 18b) are similar with that of other rail materials (standard carbon rail [55], BS11, UICA, UICB, 1% chrome rails [54], UIC60 900A rail [53], U75V rail [12,39,49] and U71Mn [39,40,51]) for the Tγ/A values less than 20 N/mm 2 (i.e. Type I), whereas they are significantly lower than that of standard rail steels with lower hardness' for the higher Tγ/A values (about 30 N/mm 2 ).…”

Section: Wear Regime Transitionsupporting

confidence: 66%

“…Under 1% creepage and 1500 MPa contact pressure, the cracks initiated near the surface and then grew intergranularly into the rail at a shallow angle (8.6 •~ 10.8 • ). For pearlitic rail materials (U71Mn, U75V and PH), the crystal orientation and grain boundary distribution of the refined pearlite colonies have significant effects on fatigue crack initiation and propagation [49]. Crack tip blunting, that occurred at numerous broken cementite and kink structures, is visible in Fig.…”

Section: Fatigue Cracksmentioning

confidence: 99%

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Comparison of wear and rolling contact fatigue behaviours of bainitic and pearlitic rails under various rolling-sliding conditions

Guo

Maiorino

et al. 2020

Wear

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Rolling-sliding wear experiments were performed to investigate the wear and rolling contact fatigue (RCF) behaviours of a premium pearlitic rail (PH), a carbon-free bainitic rail (BH) and two standard pearlitic rails (U71Mn and U75V). The wear regime and RCF damage evolution of the PH and BH materials in terms of Tγ/A (i.e. creepages and contact pressures) were compared and analyzed. The high-hardness BH steel presented a wear resistance similar to U71Mn and U75V rail materials, whereas lower wear rate was shown by the PH steel. Concerning the RCF performance, the damage of BH steel (comparable to U75V) was more severe than that of PH steel (comparable to U71Mn). Finally, with the increase in creepages and pressures, the wear and RCF damage of both PH and BH steels increased. These information could provide a guide in choosing rail materials and in development of bainitic rails.

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Section: Wear Regime Transitionsupporting

confidence: 66%

Section: Fatigue Cracksmentioning

confidence: 99%

Comparison of wear and rolling contact fatigue behaviours of bainitic and pearlitic rails under various rolling-sliding conditions

Guo

Maiorino

et al. 2020

Wear

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“…RCF is one of the most common types of damage occurring on wheel-rail surfaces [20,21]. RCF damage is influenced by many parameters, including wheel-rail materials, loading pressure, lubrication, and running conditions [8,22].…”

Section: Introductionmentioning

confidence: 99%

Effects of solid friction modifier on friction and rolling contact fatigue damage of wheel-rail surfaces

et al. 2021

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In railway network, friction is an important factor to consider in terms of the service behaviors of wheel-rail system. The objective of this study was to investigate the effect of a solid friction modifier (FM) in a railway environment. This was achieved by studying the friction, wear, and rolling contact fatigue (RCF) damage on the wheel-rail materials at different slip ratios. The results showed that when a solid FM was applied, the friction coefficient decreased. After the solid FM was separated from the wheel-rail interface, the friction coefficient gradually increased to its original level. With the application of the solid FM, the wear rates of the wheel-rail decreased. In addition, the thickness and hardness of the plastic deformation layers of the wheel-rail materials were reduced. The worn surfaces of the wheel-rail were dominated by pits and RCF cracks. Without the FM, RCF cracks ranged from 84 to 120 µm, and subsurface cracks were generated. However, with the FM, RCF cracks ranged from 17 to 97 µm and no subsurface cracks were generated. These findings indicate possible methods of improving the performance of railway rolling stock by managing friction, and reducing wear and permanent RCF damage affecting both the wheels and rails.

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“…Wear and RCF are the two main factors that have a significant effect on the durability of the rail [ 4 , 5 ]. In order to obtain superior wear and RCF resistance, heat treatment is usually used in the manufacturing process of the rails.…”

Section: Introductionmentioning

confidence: 99%

A Review on Microstructural Features and Mechanical Properties of Wheels/Rails Cladded by Laser Cladding

Wang

Lei

2021

Micromachines

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The service life of rails would be remarkably reduced owing to the increase of axle load, which can induce the occurrence of damages such as cracks, collapse, fat edges, etc. Laser cladding, which can enhance the mechanical properties of the rail by creating a coating, has received great attention in the area of the rails due to the attractive advantages such as low input heat, small heat-affected zone, and small deformation. In this paper, recent developments in the microstructural characteristics and mechanical properties of a cladded layer on the rail are reviewed. The method of process optimization for enhancing the properties of a cladded layer are discussed. Finally, the trend of future development is forecasted.

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Investigation on wear and rolling contact fatigue of wheel-rail materials under various wheel/rail hardness ratio and creepage conditions

Cited by 96 publications

References 41 publications

Comparison of wear and rolling contact fatigue behaviours of bainitic and pearlitic rails under various rolling-sliding conditions

Comparison of wear and rolling contact fatigue behaviours of bainitic and pearlitic rails under various rolling-sliding conditions

Effects of solid friction modifier on friction and rolling contact fatigue damage of wheel-rail surfaces

A Review on Microstructural Features and Mechanical Properties of Wheels/Rails Cladded by Laser Cladding

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