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Influences of flux‐cored arc welding consumables on dynamic fracture toughness ( J 1d ) of armour grade Q&T steel joints
Author(s) -
MAGUDEESWARAN G.,
SATHYANARAYANAN S.,
REDDY G. MADHUSUDHAN,
BALASUBRAMANIAN V.,
MOITRA A.,
VENUGOPAL S.,
SASIKALA G.
Publication year - 2009
Publication title -
fatigue and fracture of engineering materials and structures
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 84
eISSN - 1460-2695
pISSN - 8756-758X
DOI - 10.1111/j.1460-2695.2009.01365.x
Subject(s) - consumables , welding , materials science , metallurgy , armour , fracture toughness , shielded metal arc welding , base metal , arc welding , submerged arc welding , austenite , toughness , flux (metallurgy) , composite material , microstructure , gas metal arc welding , layer (electronics) , marketing , business
Quenched and tempered (Q&T) steels are prone to hydrogen‐induced cracking in the HAZ after welding. Austenitic stainless steel (ASS) welding consumables are traditionally used for welding of high hardness Q&T steels as they have higher solubility for hydrogen. The use of stainless steel consumables for a non‐stainless steel base metal is not economical. In recent years, the developments of low hydrogen ferritic steel (LHF) consumables that contain no hygroscopic compounds are utilized for welding of Q&T steels The use of ASS and LHF consumables for armour grade Q&T steel will lead to formation of distinct microstructures in their respective welds. This microstructural heterogeneity will have a drastic influence in the dynamic fracture toughness of the armour grade Q&T steel welds. Hence, an attempt was made in this paper to study the influence of flux‐cored arc welding consumables on dynamic fracture toughness ( J 1d ) of armour grade Q&T steel joints. The flux‐cored arc welding consumables have a significant effect on the dynamic fracture toughness of the armour grade Q&T steel welds. The joints fabricated using ASS flux‐cored wires showed superior J 1d values than the joints fabricated using LHF consumables and the base metal.