Metallurgy, Vol. 55 No. 3, 2016.
Preliminary communication
HAZ microstructure in joints made of X13CrMoCoVNbNB9-2-1 (PB2) steel welded with and without post-weld heat treatment
M. Łomozik
; Institute of Welding, Gliwice, Poland
A. Zielińska-Lipiec
; University of Science and Technology, Kraków, Poland
Abstract
The article presents the results of research butt welded joints made of X13CrMoCoVNbNB9-2-1 steel. The joints were welded with post-weld heat treatment PWHT and without PWHT, using the temper bead technique TBT. After welding the joint welded with PWHT underwent stress-relief annealing at 770 °C for 3 hours. The scope of structural tests included the microstructural examination of the coarse-grained heat affected zone (HAZ) areas of the joints, the comparison of the morphology of these areas and the determination of carbide precipitate types of the coarse grain heat affected zone (CGHAZ) of the joints welded with and without PWHT.
Keywords
welded joint; creep-resisting steel; heat affected zone (HAZ); microstructure; post-weld heat treatment (PWHT)
Hrčak ID:
153687
URI
Publication date:
1.7.2016.
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