Microstructure-Linked Mechanical Properties of P91-Incoloy 800HT Dissimilar Metal Welds
VISHWA BHANU,
ANKUR GUPTA,
CHANDAN PANDEY
Abstract:Dissimilar metal welds (DMWs) between P91 steel and Incoloy 800HT® using shielded metal arc welding (SMAW) with ENiCrCoMo-1 filler electrode were characterized in detail. The impact of multiple weld passes on microstructure in the heat-affected zone (HAZ) and weld fusion zone (WFZ) was thoroughly investigated. Postweld heat treatment (PWHT) impacts on mechanical characteristics and microstructure were also observed. The DMW was observed with heavy C, Cr, and Mo microsegregation in the WFZ, which deteriorated m… Show more
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