Analysis on Cracking in Fillet Weld of Bulk Carrier Deck
The macro and micro structure,fracture morphology and chemical composition of the cracked deck fillet weld were analyzed by means of non-destructive testing,optical microscope,scanning electron microscope and EDS energy spectrometer.Results showed that the crack section of deck fillet weld has no metal lust-er,accompanied by high temperature oxidation color,and there are more slag inclusions inside;a large num-ber of muddy liquid films are found on the crack section,and low melting point sulfides are enriched in it.Therefore,it is a typical hot crack.Improper implementation of the welding process is the main reason for the cracks in the fillet weld.
fillet weldhot crackingcause of failurewelding process
万方数据
维普
