Effect of Pre and Post Weld Heat Treatment on the Mechanical Properties of Friction Stir Welded AA6061-T6 Joint

  • J.C. Verduzco Huarez Faculty of Mechanical Engineering, University of Michoacan (UMSNH), Santiago Tapia 403, 58000 Morelia, Michoacan, Mexico.
  • R. Garcia Hernandez Metallurgical Research Institute (UMSNH), Gral. Francisco J. Mugica S/N, 58030 Morelia, Michoacan, Mexico.
  • G. M. Dominguez Almaraz Faculty of Mechanical Engineering, University of Michoacan (UMSNH), Santiago Tapia 403, 58000 Morelia, Michoacan, Mexico.
  • J.J. Villalón López Faculty of Mechanical Engineering, University of Michoacan (UMSNH), Santiago Tapia 403, 58000 Morelia, Michoacan, Mexico.
Keywords: Aluminum alloy, Friction stir welding, Solubilized heat treatment, Aging heat treatment, Tensile strength

Abstract

This research work focuses on the study of the improvement of mechanical properties, specifically the tensile strength of 6061-T6 aluminum alloy on prismatic specimens with 9.5 mm thickness that has been subjected to friction stir welding process and two heat treatments; solubilized and aging before or after the welding process. Three cases studied and evaluated were, welding of the base material without heat treatment (BMW), solubilized heat treatment and partial aging of the base material before welding (HTBW), and heat treatment of solubilized and aging of the base material after welding (HTAW). The obtained results show an increase of about 10% (20 MPa) of tensile strength for the HTBW process, compared to BMW case. In addition, for the case of HTAW, the obtained tensile resistance presents a joint efficiency of 96%, which is close to the tensile strength of the base material (»310 MPa).

Published
2020-07-23
How to Cite
Verduzco Huarez, J., Garcia Hernandez, R., Dominguez Almaraz, G., & Villalón López, J. (2020). Effect of Pre and Post Weld Heat Treatment on the Mechanical Properties of Friction Stir Welded AA6061-T6 Joint. International Journal of Automotive and Mechanical Engineering, 17(2), 7882-7889. https://doi.org/10.15282/ijame.17.2.2020.07.0588
Section
Articles