Single-pass laser beam welding of clad steel plate

Abstract

The possibility of laser beam welding (LBW) clad steel plates in one pass with a single filler metal was investigated.Two procedures, one with a singleside laser beam and the other with a dualbeam laser, were utilized for butt-joint welding of carbon steel plates clad with austenitic stainless steel.Filler metal was in the form of strips, interposed within edges prior to welding.Metallographic observations and X-ray energy dispersive spectroscopy microanalysis were performed on welded specimens.Mechanical properties were evaluated by Vickers microhardness and tensile tests.These investigations have shown the possibility of making sound welds with a satisfactory composition and crack-free weld metal with both experimental procedures.