Longitudinal Residual Stress Analysis in AA2024-T3 Friction Stir Welding
Pierpaolo Carlone *, Gaetano S. Palazzo
Identifiers and Pagination:Year: 2013
First Page: 18
Last Page: 26
Publisher Id: TOMEJ-7-18
Article History:Received Date: 15/4/2013
Revision Received Date: 3/6/2013
Acceptance Date: 4/6/2013
Electronic publication date: 23/8/2013
Collection year: 2013
open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: (https://creativecommons.org/licenses/by/4.0/legalcode). This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Friction Stir Welding (FSW) is an innovative solid-state joining process, which is gaining a great deal of attention in several applicative sectors. The opportune definition of process parameters, i.e. minimizing residual stresses, is crucial to improve joint reliability in terms of static and dynamic performance. Longitudinal residual stresses, induced by FSW in AA2024-T3 butt joints, have been inferred by means of a recently developed technique, namely the contour method. Two approaches to stress measurement have been adopted; the former is based on the assumption of uniform material properties, the latter takes into account microstructural effects and material properties variations in the welding zones. The influence of process parameters, namely rotating and welding speeds, on stress distribution is also discussed.