The Influence of the temperatures and complex gas mixtures based on argon, helium, oxygen and carbon dioxide on Aluminum Gas Metal Arc (GMA) welding process to the tensile and yield strengths of the welding result has been studied. Four different temperatures and four different mixing shield gas ratios were applied. The result revealed that the tensile and yield strengths significantly increased at -196℃rather than +25℃ to -85℃. Also, the strain tended to increase as the test temperature decreased. It has shown that at lower test temperature, the higher maximum load without any special features of the phase in load-deflection response resulted. On the other hand, the absorption energy increased slightly up to -85℃ but decreased sharply at -196℃. Hence, mixing shield gas ratio did not have a great influence on mechanical properties.

Full text: IJEIR_1939_FINAL.pdf