Thermo mechanical analysis and experimental investigation on weld induced residual stress distortion and its mitigation for submerged arc welded butt joints of p91 steel plate

Abstract

P91 steel is the modified form of Cr Mo low alloy steel with enhanced creep strength at elevated temperature P91 steel is preferred to manufacture the components like pipelines pressure vessels and power plant elements such as boilers steam generators and breeders in nuclear power plant subjected to high operating temperature at and above 600 oC Fabrication of most of these power unit components involves fusion welding process such as SMAW GMAW GTAW SAW etc Fusion welding offers good me...