Effect of filler wire on double-sided laser beam welded Al-Li alloys

The current research is aimed to study microstructure characteristics of the non-dendritic equiaxed zone and hot cracking defects influenced by chemical composition of filler metals. It would be worthwhile to study the effects of filler chemistry on the non-dendritic equiaxed zone and hot cracking formation, especially with silicon and cuprum additions. To compare with commercial Al-12Si wire, a new Al-6.2Cu-5.4Si wire was studied to successfully enhance the non-dendritic equiaxed zone's properties and restrain hot cracks on T-joints composed of Al-Li alloys 2060-T8 and 2099-T83.

Autorentext

Mr Bing Han is a PhD candidate in School of Materials Science and Engineering at Harbin Institute of Technology. He researched in State Key Laboratory of Advanced Welding and Joining since 2007. His research interest lies in laser welding and friction stir welding of new generation aluminium-lithium alloys.