3Belkacem Bouaifi,Dieter Sommer.Influence of Joining Technique on the Microstructure and Formability of Steel Sheet.Welding Research Abroad,1996,42(3) :33-36
4Tzeng Y F.Pulsed Nd:YAG laser seam welding of Zinc-coated steel.Welding Journal,1999,78(7) :238-s-244-s
5Ayres K R,Hilton P A.CO2 laser butt welding of coated steels for the automotive industry.Welding Research Abroad,1995 (5) :27-28
