Page 115 - 《摩擦学学报》2021年第4期

558 摩 擦 学 学 报 第 41 卷

Crack initiation
Crack propagation

200 μm
Plastic deformation

P
P P
P
Plastic deformation
P
50 μm 50 μm

(a) OM micrograph of damaged area of RCF sample with uniform microstructure
Plastic deformation

B
B
P+F
20 μm 50 μm
FIB sample area

B
B
B
P+F
B
P+F
Crack initiation area B
B B
P+F
P+F 100 μm
Crack propagation

(b) OM micrograph of damaged area of RCF sample with non-uniform microstructure

B
P+F
P+F
P+F
B
B P+F
B
B
P+F

100 μm

(c) OM micrograph of damaged area of RCF sample with non-uniform microstructure

Fig. 5 OM micrograph of failure area of RCF sample
图 5 RCF试样失效区域的OM形貌