Friction Stir Welding of Devitrified Al-4.0Y-4.0Ni-0.9Co Alloy Produced by Amorphous Powders
Friction stir welding (FSW) of as-extruded, nanostructured Al-4.0Y-4.0Ni-0.9Co alloy produced by amorphous powders resulted in a significant improvement in ductility. The enhanced ductility in the welds is attributed to homogenization of the microstructure during FSW. The microstructural changes include the transformation of inhomogeneous matrix grains to uniform equiaxed ones and reduction of high aspect ratio second phase particles.
Y. Wang et al., "Friction Stir Welding of Devitrified Al-4.0Y-4.0Ni-0.9Co Alloy Produced by Amorphous Powders," Scripta Materialia, Elsevier, Jan 2007.
The definitive version is available at http://dx.doi.org/10.1016/j.scriptamat.2007.02.006
Materials Science and Engineering
United States. Defense Advanced Research Projects Agency
Keywords and Phrases
Friction Stir Welding; Ultrafine Grained Microstructure; Aluminum alloys
Article - Journal
© 2007 Elsevier, All rights reserved.