Abstract:8.1 Introduction to laser welding of aluminium alloys8.2 Laser welding technologies for aluminium alloys8.3 Microstructure, defects, mechanical properties and corrosion behaviour of aluminium welds8.4 Introduction to laser welding of titanium alloys8.5 Laser welding technologies for titanium alloys8.6 Microstructure, defects, mechanical properties and corrosion behaviour of titanium welds