Improvement of wear resistance in ferrite-pearlite railway wheel steel via ferrite strengthening and cementite spheroidization

Diao, Guijiang; Yan, Qingzhi; Shi, Xiaojiao; Zhang, Xiaoxin; Wen, Zefeng; Jin, Xuesong

doi:10.1088/2053-1591/ab3481

Cited by 14 publications

(8 citation statements)

References 37 publications

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“…Figures 1(a) to (d) depict the representative normalized microstructures. It can be seen that the samples have ferritic-pearlitic microstructures, which is consistent with the microstructure of similar steels [11][12][13][14][15][16]. By increasing the holding time at the austenitization temperature, the microstructures became coarser.…”

Section: Resultssupporting

confidence: 80%

Effect of grain size on the corrosion resistance of low carbon steel

Soleimani

Mirzadeh

Dehghanian

2020

Mater. Res. Express

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Systematic works on the effect of grain size on the corrosion resistance of low carbon steel are scant. In the present work, a spectrum of grain sizes was obtained by simple heat treatment routes in a typical low-carbon steel. It was revealed that two distinct stages for the dependency of corrosion current density (i corr ) on the grain size exist. Above a limiting average grain size of ∼22 μm, i corr decreased slowly with increasing grain size. However, below this limiting value, i corr increased rapidly, which was related to the increased density of grain boundaries as interpreted by theoretical calculation of number of grains per unit area. Conclusively, a grain size of ∼22 μm (ASTM grain-size number of 8) was considered to be an optimum value according to the mechanical and corrosion standpoints.

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Section: Resultssupporting

confidence: 80%

Effect of grain size on the corrosion resistance of low carbon steel

Soleimani

Mirzadeh

Dehghanian

2020

Mater. Res. Express

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“…Steels used for high-speed railway wheel are often designed with ultra-low oxygen content (≤15 ppm) and moderate sulfur content (≤150 ppm) to diminish the influence of Materials 2022, 15, 4762 2 of 15 non-metallic inclusions on catastrophic failures. The microstructure of medium carbon wheel steel is mostly composed of lamellar pearlite and a small amount of proeutectoid ferrite [9]. The composition and microstructure of high-speed wheels have great influence on the hardness and impact toughness of high-speed wheels.…”

Section: Introductionmentioning

confidence: 99%

Quantitative Distribution Characterization and Correlation Study of Composition, Structure and Hardness of Rim Region in Railway Wheel

Wang

Shen

et al. 2022

Materials

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The railway wheel is the key component of high-speed railway train. To assure the safety in service, higher requirements are put forward in this study for the composition, microstructure uniformity, and comprehensive properties of wheel materials. In this paper, the high throughput quantitative distribution characterization methods of composition, microstructure, inclusions and Vickers hardness of high-speed railway wheel materials based on the spark source original position analysis technique, high throughput scanning electron microscope (SEM) combined with image batch processing technology, and automatic two-dimensional quantitative distribution analysis technique of inclusions and micro hardness have been studied. The distribution trend of the content of nine elements, size and quantity of sulfides and oxides, ferrite area fraction, and Vickers hardness from the wheel tread surface to the radial depth of about 50 mm below the surface has been discussed. The influence of inclusions distribution on the element segregation and the effect of rim-chilling process with different water spraying angle on the distribution of microstructure and micro hardness have been investigated. It was found that unsynchronized cooling on both sides of the rim altered the phase behavior of ferrite and pearlite and obvious inhomogeneity distribution of ferrite appeared, which led to the asymmetrical Vickers hardness in areas near or away from the flange. Based on the quantitative characterization of area fraction and micro hardness on the same location of wheel rim, a statistical mapping relationship between ferrite area fraction and Vickers hardness was established.

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“…According to the impact tests and comparative analysis by Zeng et al (2016aZeng et al ( , 2016b, high-Si, high-Mn and low-Cr steels improve in strength without affecting impact toughness, compared to the traditional ER8 and ER9 wheel steels. Diao et al (2019) conducted a wear test between ER8 and HiSi wheel steels and U71MnG rail steel using a wear test machine. The test results showed that the HiSi wheel steel had fewer and shallower surface cracks and higher wear resistance because ferrite strengthening was achieved by the addition of Si, Mn, Ni and other alloying elements.…”

Section: Introductionmentioning

confidence: 99%

Research on wear performance of new type CL60 steel for metro wheel

Xie

Peiweni

et al. 2022

ILT

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Purpose The CL60 steel wheels of metro vehicles running on a specific line need frequent reprofiling due to rapid wear. Considering this problem, a new material for metro wheels was designed. The friction and wear properties of the new material were studied, to reduce the wear rate and extend the service life of metro wheels. Design/methodology/approach Wheel specimens made of the two steel materials were tested using a GPM-60 wear tester under laboratory conditions. A field test was conducted on a specific metro line to track the wear in wheels made of the new material and CL60 steel wheels. Findings Under the laboratory conditions, the wear loss in the new material was 24.44% lower than that in CL60 steel. The field test revealed that compared to CL60 steel wheels, the new CL60 steel wheels showed a 19.42% decrease in tread wear on average. The field measurements for the wheels made of the new material are consistent with the results of laboratory simulation, suggesting relatively high wear resistance of the new material. Practical implications The results of the study can provide guidance on how to properly select steel material for metro wheels to avoid rapid wear and frequent reprofiling and reduce operating costs. Originality/value A new material for metro wheels was designed and developed by optimizing the content of Cr, Si, Mn, V and other elements. This material proved to have better wear resistance in both laboratory and field testing.

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Improvement of wear resistance in ferrite-pearlite railway wheel steel via ferrite strengthening and cementite spheroidization

Cited by 14 publications

References 37 publications

Effect of grain size on the corrosion resistance of low carbon steel

Effect of grain size on the corrosion resistance of low carbon steel

Quantitative Distribution Characterization and Correlation Study of Composition, Structure and Hardness of Rim Region in Railway Wheel

Research on wear performance of new type CL60 steel for metro wheel

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