Journal
OPTICS AND LASERS IN ENGINEERING
Volume 49, Issue 1, Pages 89-96Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.optlaseng.2010.08.010
Keywords
AZ61 magnesium alloy; Laser conduction welding; Microstructure; Heat input
Categories
Funding
- Research Fund for the Doctoral Program of Higher Education of China [20070611029]
- Key Scientific and Technological Project of Chongqing [CSTC, 2009AC4046]
Ask authors/readers for more resources
The effects of heat input on the low power Nd:YAG pulse laser conduction weldability of magnesium alloy AZ61 plates were investigated. The results show that for a hot-extruded AZ61 magnesium alloy plate laser conduction welding, the penetration depth and area of welds cross-section increased with an increase of the heat input. The microstructure of a band zone, which is located in the fusion zone (FZ) and close to the fusion boundary, evolved with an increase of the heat input. Moreover, an increase of the heat input increased the tendency of the formation of solidification cracking and liquation cracking. The porosities and average diameters of pores increased with an increase of the heat input but reduced sharply when a relatively large heat input was achieved. In addition, the degree of formation of craters increased linearly with an increase of the heat input. (C) 2010 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available