F. M. Abusaa, 7th October University, Misurata, Libya

Summary: The susceptibility of welded steel (HSLA) to hydrogen embrittlement was determined in seawater at corrosion and cathodic current densities with slow strain tensile tests. The mechanical properties were determined with the slow strain rate test in air and in artificial seawater environment. The slight decrease in time to failure, fracture energy and reduction in area at current densities and substantial decrease in those parameters at application of cathodic current densities in comparison with the values measured in air were observed. The fracture face after the tensile tests were examined with scanning electronic Microscopy (SEM).