scholarly journals Micromechanical Analysis of In-Plane Constraint Effect on Local Fracture Behavior of Cracks in the Weakest Locations of Dissimilar Metal Welded Joint

2017 ◽  
Vol 30 (9) ◽  
pp. 840-850 ◽  
Author(s):  
Jie Yang
Keyword(s):  
Fracture Behavior ◽  
Welded Joint ◽  
Local Fracture ◽  
Constraint Effect ◽  
Micromechanical Analysis ◽  
Dissimilar Metal

Effect of a Single Overload on the Fracture Behavior in Safe-End Dissimilar Metal Welded Joints in Nuclear Power Plant

2014 ◽  
Vol 1049-1050 ◽  
pp. 600-604
Author(s):  
He Xue ◽  
Yuan Kui Gui ◽  
Wei Bing Wang ◽  
Xiao Bo Li ◽  
Ying Ru Wang ◽  
...  
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Tensile Stress ◽  
Pressure Vessel ◽  
Welded Joints ◽  
Nuclear Power ◽  
Fracture Behavior ◽  
Welded Joint ◽  
Dissimilar Metal ◽  
Single Overload

To understand the effect of a single overload on the fracture behavior in welded joints, the stress and strain field at the crack tip in a safe-end dissimilar metal welded joint in nuclear pressure vessel is simulated and analyzed by using the elastic-plastic finite element method in the paper, in which the mechanical heterogeneity in welded joint is emphatically considered. The investigating results indicate that the tensile plastic strain at crack tip increases, but the tensile stress decreases as a single overload increases, and the influence of a single overload on tensile strain is larger than one on tensile stress, which provide a theoretical basis for quantitatively estimating the crack growth rate of environmentally assisted cracking in the welded structural material of pressure vessel and piping in the nuclear power plant.

scholarly journals Creep-fatigue fracture behavior of dissimilar metal electron beam welded joint.

1987 ◽  
Vol 36 (410) ◽  
pp. 1239-1245
Author(s):  
Masakazu OKAZAKI ◽  
Yoshiharu MUTOH ◽  
Toshio YADA ◽  
Masao YAMAGUCHI
Keyword(s):  
Electron Beam ◽  
Fatigue Fracture ◽  
Fracture Behavior ◽  
Welded Joint ◽  
Dissimilar Metal ◽  
Creep Fatigue ◽  
Fatigue Fracture Behavior ◽  
Metal Electron
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