Title :
Laser beam welding of dissimilar metals of aluminum alloy and galvanized steel sheet
Author :
Yu, Shurong ; Fan, Ding ; Dong, Bizhe
Author_Institution :
Coll. of Mech. & Electr. Eng., Lanzhou Univ. of Technol., Lanzhou, China
Abstract :
Using CO2 laser, Laser Lap Welding for dissimilar metals of 5A05 aluminum alloy (upper side) and ST04Z galvanized steel sheet (lower side) that both of 1mm thickness was experimented. Moreover, the microscopic structure, mechanical performance of weld joints were also analyzed and tested. The experimental results indicated that: typical melt brazed lap joints were fused by melted 5A05 and un-melted ST04Z sheet. Fractures basically occurred in heat-affected zone (HAZ) of 5A05. Its density was 94MPa, acknowledged as gliding fracture.
Keywords :
aluminium alloys; brazing; carbon compounds; fracture; galvanising; gas lasers; laser beam welding; mechanical testing; steel; welds; 5A05 aluminum alloy; CO2 laser; CO2; ST04Z galvanized steel sheet; dissimilar metals; gliding fracture; heat-affected zone; laser beam welding; laser lap welding; mechanical performance; melt brazed lap joint; microscopic structure; size 1 mm; weld joint; Aluminum; Automotive engineering; Joints; Laser beams; Steel; Welding; aluminum; dissimilar metals; galvanized steel; laser lap welding;
Conference_Titel :
Mechanic Automation and Control Engineering (MACE), 2011 Second International Conference on
Conference_Location :
Hohhot
Print_ISBN :
978-1-4244-9436-1
DOI :
10.1109/MACE.2011.5988146
