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Fatigue Properties of AA6060-T6 Butt Welds Made by Hybrid Metal Extrusion & Bonding (HYB)
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  • Lise Sandnes,
  • Øystein Grong,
  • Torgeir Welo,
  • Filippo Berto
Lise Sandnes
Norwegian University of Science and Technology
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Øystein Grong
Norwegian University of Science and Technology
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Torgeir Welo
Norwegian University of Science and Technology
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Filippo Berto
Norwegian University of Science and Technology
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Abstract

The present investigation is concerned with high-cycle axial fatigue testing of a 2 mm AA6060-T6 HYB butt weld produced in the solid state using AA6082 filler metal addition. The results complement the three-point bend testing and the tensile testing done in two previous studies. In this study, optical microscope and scanning electron microscope examinations have been carried out to reveal the joint macro/microstructure and document possible surface and root defects deemed to affect fatigue life. In the as-welded condition, the HYB weld suffers from surface irregularities at the weld face and “kissing” bond formation in the root region. Despite of this, the subsequent testing shows that the fatigue properties exceed those reported for comparable AA6082-T6 gas metal arc butt welds and matching those reported for corresponding high-strength laser beam and friction stir weldments.

Peer review status:Published

13 May 2020Submitted to Fatigue & Fracture of Engineering Materials & Structures
14 May 2020Submission Checks Completed
14 May 2020Assigned to Editor
19 May 2020Reviewer(s) Assigned
17 Jun 2020Review(s) Completed, Editorial Evaluation Pending
19 Jun 2020Editorial Decision: Revise Minor
26 Jun 20201st Revision Received
27 Jun 2020Submission Checks Completed
27 Jun 2020Assigned to Editor
27 Jun 2020Reviewer(s) Assigned
29 Jun 2020Review(s) Completed, Editorial Evaluation Pending
05 Jul 2020Editorial Decision: Accept
26 Jul 2020Published in Fatigue & Fracture of Engineering Materials & Structures. 10.1111/ffe.13302