Friction Stir Welding of Precipitation Strengthened Aluminium Alloys: Scope and Challenges
Abstract
High strength aluminium alloys are very attractive for high structural efficiency in aerospace structures. However, the full potential of these alloys is not realised because of lower joint efficiencies. Most of the high strength aluminium alloys use precipitation strengthening as the primary strengthening mechanism. Heat flux during friction stir welding of precipitation strengthened aluminium alloys correlates with the joint efficiency. the best joint efficiency results are observed in a narrow intermediate heat flux region. the origin of this is discussed in terms of precipitate dissolution, reprecipitation and coarsening. Low intensity post-weld plastic deformation and design of dispersion containing aluminium alloys are suggested as approaches to enhance joint efficiency in friction stir welded structures. © 2011 Institute of Materials, Minerals and Mining.
Recommended Citation
P. S. De and R. S. Mishra, "Friction Stir Welding of Precipitation Strengthened Aluminium Alloys: Scope and Challenges," Science and Technology of Welding and Joining, vol. 16, no. 4, pp. 343 - 347, SAGE Publications; Institute of Materials, Minerals and Mining (UK), May 2011.
The definitive version is available at https://doi.org/10.1179/1362171811Y.0000000020
Department(s)
Materials Science and Engineering
Keywords and Phrases
Aluminium alloys; Friction stir welding; High strength; Joint efficiency; Precipitation strengthened
International Standard Serial Number (ISSN)
1362-1718; 1362-1718
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 SAGE Publications; Institute of Materials, Minerals and Mining (UK), All rights reserved.
Publication Date
01 May 2011
Comments
National Science Foundation, Grant 1157754