Table 4:
Fracture toughness of the carburized layer under different ratios of σ
sc
/σ
sb
.
σ
sc
/σ
sb
σ
sc
/MPa
K
ICc
/MPa·m
1/2
1.0
855
5.03
1.25
1068
6.29
1.5
1282
7.55
2.0
1710
10.06
2.5
2137
12.58