Title

Friction Stir Welding of Devitrified Al-4.0Y-4.0Ni-0.9Co Alloy Produced by Amorphous Powders

Abstract

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.

Department(s)

Materials Science and Engineering

Sponsor(s)

United States. Defense Advanced Research Projects Agency

Keywords and Phrases

Friction Stir Welding; Ultrafine Grained Microstructure

Library of Congress Subject Headings

Aluminum alloys

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2007 Elsevier, All rights reserved.

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