Page 130 - 摩擦学学报2025年第5期

764 摩擦学学报（中英文） 第 45 卷

0.6 60

First text
0.5 50 Second text
Adhesion coefficient 0.3 Wear rate/(μg/m) 40
0.4

30
0.2
Rail 2#, Ave.=0.356
0.1 Rail 1#, Ave.=0.330 20
Rail 3#, Ave.=0.322 10
0.0
0 25 50 75 100 0
Number of cycles/10 3 Rail 1# Rail 2# Rail 3#
Fig. 5 Wheel-rail adhesion coefficient Fig. 6 Wear rates of rail welded joints
图 5 轮轨黏着系数 图 6 钢轨焊接接头磨损率

Severe spalling

500 μm 200 μm

(a) Rail 1#

Severe spalling

500 μm 200 μm

(b) Rail 2#

Severe spalling

500 μm 200 μm

(c) Rail 3#
Fig. 7 OM and SEM micrographs of surface damage of weld zone of rail welded joints
图 7 钢轨焊接接头焊缝区表面损伤的OM和SEM照片