Page 52 - 摩擦学学报2025年第5期

686 摩擦学学报（中英文） 第 45 卷

14 Hypoeutectoid rail 16 Hypoeutectoid rail 14 Hypoeutectoid rail
13 Eutectoid rail Eutectoid rail Eutectoid rail
y=4169.516x+5.886
12 Bainitic rail 12 Bainitic rail Bainitic rail
Wear rate/(μg/m) 10 9 8 y=−0.04323x+18.14667 Wear rate/(μg/m) 14 8 y=1.22978x-16.23414 Wear rate/(μg/m) 12 8
11
10
10
y=1184.678x+3.87
6 7 y=−0.02483x+11.33966 6 y=0.48626x-4.06186 6 y=850.374x+4.827
5 y=−0.0053x+6.72763 4 y=0.24318x+0.29576 4
100 120 140 160 180 200 220 240 260 16 18 20 22 24 26 0.000 0 0.000 6 0.001 2 0.001 8
Velocity/(km/h) Axle load/t Curvature radius /m −1
−1
(a) Wear rate vs velocity (b) Wear rate vs axle load Hypoeutectoid rail (c) Wear rate vs curvature radius
120
Plastic deformation layer depth/μm 100 Bainitic rail y=4x-33.33333 Plastic deformation layer depth/μm 100 Bainitic rail
110
Hypoeutectoid rail
Eutectoid rail
Eutectoid rail
y=21564.971x+72.09
y=7.125x-65.625
90
80
80
y=19172.912x+39.817
70
60
y=4.375x-47.875
60
y=14920.818x+35.222
50
40
20
30
20
18
22
0.000 6
0.001 2
16
Axle load/t 24 26 40 0.000 0 Curvature radius /m −1 0.001 8
−1
(d) Deformation depth vs axle load (e) Deformation depth vs curvature radius
Fig. 15 Linear regression analysis of working parameters and rail wear/RCF behavior
图 15 运行参数与磨损疲劳行为的线性回归分析

表 3 运行参数对钢轨磨损与滚动接触疲劳行为影响
Table 3 Effect of working parameters on rail wear and RCF behaivour
Wear and RCF behaviour Velocity Axle load Curvature radius
Wear rate ̶ + ̶
Surface morphology ̶ + ̶
Plastic deformation layer depth / + ̶
RCF crack / √ /
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