Article
Residual Stresses in Friction-Stir-Welded 2195 and 7075 Aluminum Alloys
Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
(2008)
Abstract
Surface residual stresses (RSs) were characterized along friction-stir-welded 2195 and 7075 aluminum alloy (AA) plates. The surface measurements were obtained through X-ray diffraction (XRD) at five different locations along the weld. Each location consisted of several regions across the welded plate including the weld nugget, thermomechanically affected zone (TMAZ), heat-affected zone (HAZ), and base material. Measurements revealed that RSs were not uniform along the welded plate, with the highest RSs obtained on the middle of the plate. The RSs across the weld were also asymmetric relative to the weld centerline, with RSs as high as 231 MPa in the TMAZ for the retreating side of the weld.
Keywords
- alloys,
- alumina,
- aluminum alloys,
- aluminum metallurgy,
- cerium alloys,
- friction,
- heat affected zone,
- light metals,
- metallic compounds,
- residual stresses,
- strength of materials,
- surface measurement,
- welded steel structures,
- welds,
- e ray analysis,
- 7075 aluminum alloys,
- base material,
- retreating sides,
- surface residual stresses,
- weld nuggets
Disciplines
Publication Date
December, 2008
Publisher Statement
Works produced by employees of the U.S. Government as part of their official duties are not copyrighted within the U.S. The content of this document is not copyrighted.
Citation Information
Omar Hatamleh, Iris V. Rivero and Arif Maredia. "Residual Stresses in Friction-Stir-Welded 2195 and 7075 Aluminum Alloys" Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science Vol. 39 Iss. 12 (2008) Available at: http://works.bepress.com/iris_rivero/2/