Application of welding technologies for joining of Mg alloys: Microstructure and mechanical properties Academic Article uri icon

abstract

  • Five welding technologies were investigated as possible solutions to the challenge of joining Mg alloys: Gas Tungsten Arc Welding, Electron Beam Welding, Magnetic Pulse Welding, Laser Assisted Friction Stir Welding and Resistance Spot Welding. The main influencing parameters have been analyzed, using the joint strength and microstructure to evaluate the welding processes. The advantages and difficulties for each technique are described and discussed. The microstructural changes that occurred during welding were examined by optical microscopy, and by scanning electron microscopy. Back-scattered electron imaging giving pronounced compositional contrast was used in combination with energy-dispersive and wavelength-dispersive spectroscopy microanalysis. Mechanical properties were determined by standard tensile tests on small-scale specimens, and by …

publication date

  • January 1, 2003