scholarly journals Effect of Residual Stresses on Fatigue Crack Propagation at Room Temperature in a Ferritic-Austenitic Welded Joint

1989 ◽  
pp. 939-945
Author(s):  
A. I. Zahouane ◽  
J. P. Gauthier ◽  
B. Marini
Keyword(s):  
Fatigue Crack ◽  
Residual Stresses ◽  
Crack Propagation ◽  
Fatigue Crack Propagation ◽  
Room Temperature ◽  
Welded Joint

Fatigue Crack Propagation Properties of Welded Joints at 300°C

2003 ◽  
Vol 125 (2) ◽  
pp. 131-135
Author(s):  
Akihiko Ohta ◽  
Naoyuki Suzuki ◽  
Yoshio Maeda
Keyword(s):  
Fatigue Crack ◽  
Crack Propagation ◽  
Fatigue Crack Propagation ◽  
Welded Joints ◽  
Room Temperature ◽  
Welded Joint ◽  
Type Specimen ◽  
Pressure Vessels ◽  
Fatigue Threshold ◽  
Propagation Properties

Fatigue crack propagation properties of welded joints were investigated on steel plate for boilers and other pressure vessels. The fatigue crack propagation properties at 300°C became similar to those at room temperature when the thermal stress could be reduced down to −1 MPa by using center cracked type specimen with longitudinal slits and a specially designed furnace. The tensile residual stress was +152 MPa in the as-welded joint, and +12 MPa after PWHT. The fatigue threshold was about 2.7, 5.1 and 7.3 MN/m3/2 for weld metal in the as-welded condition, after PWHT and the base metal, respectively.

Effect of Residual Stresses on the Fatigue Crack Propagation in Welded Joints

2005 ◽  
Vol 2 (3) ◽  
pp. 12036 ◽  
Author(s):  
N Gubeljak ◽  
J Predan ◽  
R Pippan ◽  
M Oblak
Keyword(s):  
Fatigue Crack ◽  
Residual Stresses ◽  
Crack Propagation ◽  
Fatigue Crack Propagation ◽  
Welded Joints

Influence of Residual Stresses on Fatigue Crack Propagation in Pearlitic Cold-Drawn Steel Wires

2011 ◽  
Vol 681 ◽  
pp. 229-235 ◽  
Author(s):  
Roberto Brighenti ◽  
Andrea Carpinteri ◽  
Sabrina Vantadori
Keyword(s):  
Residual Stress ◽  
Fatigue Crack ◽  
Residual Stresses ◽  
Crack Propagation ◽  
Fatigue Crack Propagation ◽  
Notch Root ◽  
Steel Wire ◽  
Cold Drawing ◽  
Reduced Cross Section ◽  
Cyclic Tension

The aim of the present paper is to evaluate the effect of residual stresses, due to cold-drawing process, on the fatigue crack propagation in a pearlitic steel wire with a V-shaped circumferential notch. In order to analyse the effect of the notch severity on the residual stress distribution, three different values of the notch root radius are examined. The residual stress distributions in the reduced cross-section of such wires are numerically evaluated through FE analyses which simulate the material removing operation in the notched region. The stress-intensity factors (SIFs) related to tension loading and residual stresses are computed. Then, the crack propagation under cyclic tension combined with the residual stresses is analysed by taking into account the above SIF values and the actual stress ratio, which is different from that due to cyclic tension only.

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