Peer-Reviewed Journal Details
Mandatory Fields
Hyde, TH;Sun, W;Yaghi, AH;Leen, SB
2009
November
Fatigue & Fracture Of Engineering Materials & Structures
Some issues on structural integrity analysis of P91 welds in power plants subjected to high temperature creep*
Published
WOS: 4 ()
Optional Fields
RESIDUAL-STRESS SIMULATION STATE PHASE-TRANSFORMATION FINITE-ELEMENT SIMULATION PIPE WELDS WELDMENTS PRESSURE BEHAVIOR
32
926
935
Welds are metallurgically complex, with heterogeneous structures within the weld metal and heat-affected zones. In order to carry out a structural integrity assessment, it is important to have knowledge of the initial metallurgical features and the associated material property variations so that it is possible to accurately model all the possible failure modes of welds using, for example, numerical techniques. This paper describes some fundamental issues concerning a holistic process for high temperature performance and failure prediction assessment of power plant welds. This includes welding process simulation and residual stress determination, microstructural evolution and the formulation of creep damage mechanics constitutive equations including weld metal anisotropy. Typical examples, from specific case studies for P91 welds, are used to illustrate the application. Future requirements for development of high temperature assessment methods for welds are suggested.
8756-758X
10.1111/j.1460-2695.2009.01397.x
Grant Details
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