Laser welding process using a Nd:YAG laser of maximum power of 2 kW is investigated and reported. Sheets with thickness of 1.2 mm were butt-welded with Helium and Argon used as a shielding gas. Mechanical and technological properties of a AZ31 magnesium alloy sheets laser beam welded without filler were studied using tensile and formability tests implementing different strain paths. Experimental activity was carried out in the first phase by laser penetration tests (bead on plate) with the aim of identify the range of welding parameters. According to a Design of Experiment technique, tests were carried out in order to prepare butt-welded joints for the subsequent mechanical and technological characterization. In the second phase, uniaxial tensile tests and Nakazima tests were performed using an optical system based on Digital Image Correlation (DIC) techniques for strain acquisition.
Mechanical and technological characterization of AZ31 magnesium alloy butt joints welded by Nd:YAG laser / Palumbo, G.; Scintilla, L. D.; Sorgente, D.; Tricarico, L.; Brandizzi, M.; Satriano, A. A.. - CD-ROM. - (2011).
Mechanical and technological characterization of AZ31 magnesium alloy butt joints welded by Nd:YAG laser
Palumbo G.;Sorgente D.;Tricarico L.;
2011-01-01
Abstract
Laser welding process using a Nd:YAG laser of maximum power of 2 kW is investigated and reported. Sheets with thickness of 1.2 mm were butt-welded with Helium and Argon used as a shielding gas. Mechanical and technological properties of a AZ31 magnesium alloy sheets laser beam welded without filler were studied using tensile and formability tests implementing different strain paths. Experimental activity was carried out in the first phase by laser penetration tests (bead on plate) with the aim of identify the range of welding parameters. According to a Design of Experiment technique, tests were carried out in order to prepare butt-welded joints for the subsequent mechanical and technological characterization. In the second phase, uniaxial tensile tests and Nakazima tests were performed using an optical system based on Digital Image Correlation (DIC) techniques for strain acquisition.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
