A novel realtime induction heatingassisted underwater wet welding process was
investigated. The addition of induction heating could reduce the cooling rate of the
joint in underwater wet welding. The macro and microstructures, mechanical properties
such as tensile, impact, and bending properties, and Yslit restraint testing
were studied. The results showed the content of martensite (M) and upper bainite
(BU) phases decreased, while the proeutectoid ferrite (PF) and acicular ferrite (AF)
phases increased as the induction heating voltage increased. Mechanical properties
of the joint were improved through addition of induction heating and fracture morphology
with characteristic uniform dimples belonging to ductile fracture. The cracking
ratio of Yslit restraint testing was also decreased. Therefore, the susceptibility to
cold cracking of the wet welding joint was improved.
A novel realtime induction heatingassisted underwater wet welding process wasinvestigated. The addition of induction heating could reduce the cooling rate of thejoint in underwater wet welding. The macro and microstructures, mechanical propertiessuch as tensile, impact, and bending properties, and Yslit restraint testingwere studied. The results showed the content of martensite (M) and upper bainite(BU) phases decreased, while the proeutectoid ferrite (PF) and acicular ferrite (AF)phases increased as the induction heating voltage increased. Mechanical propertiesof the joint were improved through addition of induction heating and fracture morphologywith characteristic uniform dimples belonging to ductile fracture. The crackingratio of Yslit restraint testing was also decreased. Therefore, the susceptibility tocold cracking of the wet welding joint was improved.
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