Title :
Research on CO2 Laser Welding with Filler Wire of Dissimilar High Strength Aluminum Alloy 2024 and 7075
Author :
Zhang, Dongyun ; Zhao, Zhiying ; Gao, Shuangxin ; Zhao, Heng
Author_Institution :
Laser Inst. of Eng., Beijing Univ. of Technol., Beijing, China
Abstract :
The method of CO2 laser welding with filler wire was used to join the dissimilar high strength aluminum alloy 2024 and 7075. This paper represented the effect of welding procedure to the appearance of weld bead, the porosity and the instability of the welding process. The mechanism was studied. By analyzing the microstructure and strengthening phase of weld bead, the causes of defects and the impact on the mechanical property are discussed. Moreover, we contrasted the microstructure and mechanical properties of the weld beads welded by filling two different weld wires, and analyzed the reason of their differences.
Keywords :
aluminium alloys; chromium alloys; copper alloys; filler metals; gas lasers; iron alloys; laser beam welding; magnesium alloys; manganese alloys; mechanical stability; metallurgy; porosity; silicon alloys; titanium alloys; wires; zinc alloys; 2024 aluminum alloy; 7075 aluminum alloy; AlSiFeCuMnMgCrZnTi; carbon dioxide laser welding; dissimilar high strength aluminum alloy; filler wire; microstructure phase; strengthening phase; weld bead appearance; weld wire; welding procedure; welding process instability; welding process porosity; Aluminum alloys; Chemical lasers; Filling; Laser beams; Substrates; Welding; Wires;
Conference_Titel :
Photonics and Optoelectronics (SOPO), 2012 Symposium on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4577-0909-8
DOI :
10.1109/SOPO.2012.6270445
