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

fYear

2011

fDate

15-17 July 2011

Firstpage

5030

Lastpage

5032

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Mechanic Automation and Control Engineering (MACE), 2011 Second International Conference on

Conference_Location

Hohhot

Print_ISBN

978-1-4244-9436-1

Type

conf

DOI

10.1109/MACE.2011.5988146

Filename

5988146