Abstract
The welded structures are prone to fail prematurely when subjected to long time application of high temperature environment. The variation of creep behaviour in 316LN stainless steel weldment and base metal is considered as one of the major parameter to premature failure. The present research elucidates the stress and strain developed in 316LN stainless steel weldment that are fabricated using multi-pass tungsten inert gas welding. Finite element analysis employing Norton’s creep law is carried out at elevated temperature to predict the creep behaviour of weld joint. Parametric studies of various weld groove angles are carried out for a range of stress levels. Based on the analysis, critical locations and induced stress levels are identified and discussed.
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