The current generation of higher strength micro-alloyed low-carbon steels offer an advantageous combination of high toughness and good weldability. Depending on both alloy design and plate manufacturing practice, low carbon TMCP/Q&T steel weldments are susceptible to HAZ softening. Experience indicates that weld joint efficiency of these steels rests in the interaction of yield strength and toughness. This interaction involves both HAZ and weld metal. This paper provides background information on the subject. It is concluded that information describing HAZ toughness is inconclusive with respect to joint performance because of the local difference in mechanical properties across the weld.
The effect of HAZ softening on the fracture characteristics of modern steel weldments and the practical integrity of marine structures made by TMCP steels
Einfluß der Erweichung der Wärmeeinflußzone auf das Bruchverhalten von Schweißungen aus modernen Stählen und Schadensfreiheit von meerestechnischen Konstruktionen aus kontrolliert thermomechanisch gewalzten Stählen
1989
15 Seiten, 8 Bilder, 7 Quellen
Conference paper
English
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