Investigations on laser welding of magnesium alloys

2012 ◽  
Vol 103 (10) ◽  
pp. 1218-1222 ◽  
Author(s):  
Jun Dai ◽  
Jian Huang ◽  
Zhuguo Li ◽  
Jie Dong ◽  
Yixiong Wu
Keyword(s):  
Laser Welding ◽  
Magnesium Alloys

Laser Welding of AZ91 and WE43 Magnesium Alloys for Automotive and Aerospace Industries

2001 ◽  
Vol 3 (7) ◽  
pp. 504-507 ◽  
Author(s):  
M. Dhahri ◽  
J. E. Masse ◽  
J. F. Mathieu ◽  
G. Barreau ◽  
M. Autric
Keyword(s):  
Laser Welding ◽  
Magnesium Alloys

A review of laser welding techniques for magnesium alloys

2006 ◽  
Vol 171 (2) ◽  
pp. 188-204 ◽  
Author(s):  
X. Cao ◽  
M. Jahazi ◽  
J.P. Immarigeon ◽  
W. Wallace
Keyword(s):  
Laser Welding ◽  
Magnesium Alloys

Modelling of CO2 laser welding of magnesium alloys

2008 ◽  
Vol 40 (4) ◽  
pp. 581-588 ◽  
Author(s):  
Kamel Abderrazak ◽  
Wacef Ben Salem ◽  
Hatem Mhiri ◽  
Georges Lepalec ◽  
Michel Autric
Keyword(s):  
Laser Welding ◽  
Magnesium Alloys ◽  
Co2 Laser

Effect of CaO Content on Yb: YAG Disk Laser Weldability of AZ31 Mg Alloy

2014 ◽  
Vol 804 ◽  
pp. 31-34 ◽  
Author(s):  
Min Jung Kang ◽  
Cheol Hee Kim
Keyword(s):  
Mechanical Properties ◽  
Specific Gravity ◽  
Laser Welding ◽  
Oxidation Resistance ◽  
Magnesium Alloys ◽  
Mg Alloys ◽  
Mg Alloy ◽  
Weld Strength ◽  
Shielding Gas ◽  
Az31 Mg Alloy

Magnesium alloys have recently attracted increased attention as structural materials owing to their low specific gravity. However, they must typically be casted, formed, melted, and even heated under a protective shielding gas to prevent them from oxidizing and igniting. So-called “ECO-Mg” alloys have recently been developed by adding CaO to conventional Mg alloys. ECO-Mg alloys exhibit higher oxidation resistance during melting and superior castability, even when beryllium is not added or toxic protective gasses such as SF6are not used. We laser-welded AZ31 Mg alloys with various CaO contents and examined the mechanical properties of the welds. Increasing the CaO content in the AZ31 increased the burning resistance of the ECO-Mg alloys, thereby suppressing plume generation during laser welding; thus the ECO-Mg alloy welds could be fully penetrated faster than conventional Mg alloy welds. The weld strength also increased with increasing CaO content in the AZ31 because the CaO refined the grains.

Research and Prospects of Laser Welding Technologies of Magnesium Alloys

2010 ◽  
Vol 139-141 ◽  
pp. 580-583
Author(s):  
Bo Lin He ◽  
Jing Liu
Keyword(s):  
Mechanical Properties ◽  
Laser Welding ◽  
Magnesium Alloys ◽  
Welding Distortion ◽  
Weld Shape ◽  
Line Energy ◽  
Welding Technology ◽  
Fine Microstructure ◽  
The Status ◽  
Automate Production

Comparing with traditional welding technology, there are many advantages of magnesium laser welding, for example, high welding speed, low line energy, small welding distortion, easy to achieve automate production et al. It is widely used in the area of magnesium welding. Fine microstructure and excellent weld shape can be obtained by choosing reasonable technology parameters and the mechanical properties of welding joint can also be promoted. But there are some defects in the process of welding magnesium alloys with laser, such as, stomas, cracks, impurities and so on. Some actions can be taken to improve or prevent those defects. For example, choosing the appropriate process parameters can solve the problem of cracks, impurities. In this paper, the status of laser welding magnesium alloy is reviewed in recent years, and some problems in magnesium laser welding were analyzed and some suggestions of solving the problems were put forward.

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