Abstract
The effect of single pass and multipass (double and triple pass) gas metal arc welding (GMAW) on the microstructure and stress corrosion cracking susceptibility of Al5083-H321 alloy was studied. For this purpose, ER5183 filler metal was used. The results indicated that the weld metal exhibited a dendritic structure which was refined with the increase in the number of passes. Also, it was found that the weld fabricated by two passes exhibited the best stress corrosion cracking (SCC) resistance. The results of the SCC tests also revealed that although the double pass sample had the higher ultimate tensile stress value of about 310.8 MPa among weldments, it was still lower than that of the base metal (BM), which had the ultimate tensile stress of about 366.5 MPa.
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Bodaghi, F., Atapour, M. & Shamanian, M. Assessment of Microstructure and Stress Corrosion Cracking Susceptibility of Multipass Gas Metal Arc Welded Al 5083-H321 Aluminum Alloy. Metallogr. Microstruct. Anal. 10, 246–256 (2021). https://doi.org/10.1007/s13632-021-00737-7
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DOI: https://doi.org/10.1007/s13632-021-00737-7