Comparison of microstructures and mechanical properties of Al-Ti weld joints prepared by different welding technologies Article Swipe
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· 2021
· Open Access
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· DOI: https://doi.org/10.1088/1757-899x/1050/1/012010
· OA: W3127597784
This study deals with the evaluation of butt welded-brazed joints of two plates with the thickness of 2 mm from EN AW5083-H111 alloy and titanium Grade 2 prepared by two different welding technologies: laser beam welding-brazing (LBWB) and gas tungsten arc welding (GTAW). ER4047 and ER4043 welding wires with the diameter of 1.2 mm were used as filler materials. The macrostructures, microstructures and mechanical properties of experimental weld joints were analysed and compared. In general, the strength of joints produced by LBWB was higher than the strength of GTAW samples. The highest tensile strength at the level of 245 MPa was measured for the experimental joint made by LBWB using following welding parameters: the laser power of 1800 W, the welding speed of 30 mm.s −1 , the laser beam offset to Al-sheet of 400 µm and the wire feed rate of 2.4 m.min −1 .
