Abstract

Laser welding has been widely used in different industrial fields. Laser welding is an interesting technology for joining dissimilar metallic materials. Welding of dissimilar metals by laser beam is new research filed. The objective of this paper is to review the previous research works on laser beam welding of dissimilar metallic materials. This paper presents the details of the laser welding technique and its application on the field of dissimilar welding. The most welded dissimilar metallic materials by laser were cited. Metallurgical aspects of some recent investigations dedicated to the joining of dissimilar metallic materials were also presented and discussed. The main advantages and disadvantages of the laser welding technique were mentioned.

Keywords: Laser welding; Dissimilar metals; Microstructures; Mechanical properties

Abbreviations: HAZ: Heat Affected Zone; LBW: Laser Beam Welding; Nd: YAG: Neodymium-Doped Yttrium Garnet; IMC: Intermetallic Compounds