0
research-article

Residual Stresses in Dissimilar Friction Stir Welding of AA2024 and AZ31: Experimental and Numerical Study

[+] Author and Article Information
Zeng Hou

Department of Mechanical Engineering, Khalifa University of Science and Technology, Petroleum Institute, Abu Dhabi, UAE
1193359956@qq.com

Jamal Sheikh-Ahmad

Department of Mechanical Engineering, Khalifa University of Science and Technology, Petroleum Institute, Abu Dhabi, UAE
jahmad@pi.ac.ae

Firas Jarrar

Department of Mechanical Engineering, Khalifa University of Science and Technology, Petroleum Institute, Abu Dhabi, UAE
fjarrar@pi.ac.ae

Fahrettin Ozturk

Turkish Aerospace Industries, Ankara, Turkey
fahrettin71@gmail.com

1Corresponding author.

ASME doi:10.1115/1.4039074 History: Received August 01, 2017; Revised December 11, 2017

Abstract

Thermal history and residual stresses in dissimilar friction stir welding of AA2024 and AZ31 was studied under different tool offsets using a Coupled Eulerian-Lagrangian finite element model and a mechanical model. Welding experiments and residual stresses measurements were conducted to validate the models. Comparisons between the experimental and numerical results indicated good agreement. It was shown that the maximum temperature in the welded zone reached the eutectic reaction temperature for AZ31 and that its location shifted with tool offset from the advancing side to the retreating side. Longitudinal residual stresses changed from tensile under the tool shoulder to compressive beyond this region and it appeared to be the dominant stress component. The transverse stresses were tensile and of lower magnitude. Both the longitudinal and transverse residual stresses have their maximum values within the weld zone near the end of the weld length. For both peak temperatures and residual stresses, higher values were obtained at the advancing side with no tool offset and a 1mm offset to the advancing side, and they became higher at the retreating side with 1mm offset to the retreating side. Lower residual stresses and better weld quality were obtained with tool offset to the aluminum side.

Copyright (c) 2018 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In