scholarly journals X-Ray Study on Deformation and Fracture of Solid. Evaluation of Fatigue Crack Growth Characteristics of WC-Co Cemented Carbides.

1997 ◽  
Vol 46 (7) ◽  
pp. 726-731 ◽  
Author(s):  
Yukio HIROSE ◽  
Myung-Hwan BOO ◽  
Yoichi KISHI ◽  
Young-Chul PARK
Keyword(s):  
Fatigue Crack ◽  
Fatigue Crack Growth ◽  
Crack Growth ◽  
Growth Characteristics ◽  
Cemented Carbides ◽  
X Ray ◽  
Deformation And Fracture

Fracture toughness and fatigue crack growth characteristics of nanotwinned copper

2011 ◽  
Vol 59 (6) ◽  
pp. 2437-2446 ◽  
Author(s):  
A. Singh ◽  
L. Tang ◽  
M. Dao ◽  
L. Lu ◽  
S. Suresh
Keyword(s):  
Fracture Toughness ◽  
Fatigue Crack ◽  
Fatigue Crack Growth ◽  
Crack Growth ◽  
Growth Characteristics

Mechanisms of Fatigue Crack Growth in WC-Co Cemented Carbides

2005 ◽  
Vol 297-300 ◽  
pp. 1120-1125 ◽  
Author(s):  
Myung Hwan Boo ◽  
Chi Yong Park
Keyword(s):  
Growth Rate ◽  
Stress Intensity Factor ◽  
Fatigue Crack ◽  
Stress Intensity ◽  
Fatigue Crack Growth ◽  
Intensity Factor ◽  
Crack Growth ◽  
Stress Ratio ◽  
Cemented Carbides ◽  
Stress Intensity Factor Range

In order to study the influence of stress ratio and WC grain size, the characteristics of fatigue crack growth were investigated in WC-Co cemented carbides with two different grain sizes of 3 and 6 µm. Fatigue crack growth tests were carried out over a wide range of fatigue crack growth rates covering the threshold stress intensity factor range DKth. It was found that crack growth rate da/dN against stress intensity factor range DK depended on stress ratio R. The crack growth rate plotted in terms of effective stress intensity factor range DKeff still exhibited the effect of microstructure. Fractographic examination revealed brittle fracture at R=0.1 and ductile fracture at R=0.5 in Co binder phase. The amount of Co phase transformation for stress ratio was closely related to fatigue crack growth characteristics.

Sign in / Sign up

Export Citation Format

Share Document