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Friction-stir lap-joining of aluminium-magnesium/poly-methyl-methacrylate hybrid structures: thermo-mechanical modelling and experimental feasibility study

Aghajani Derazkola, H ; Sharif University of Technology | 2018

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  1. Type of Document: Article
  2. DOI: 10.1080/13621718.2017.1323441
  3. Publisher: Taylor and Francis Ltd , 2018
  4. Abstract:
  5. In this research, the feasibility of friction-stir welding (FSW) for dissimilar lap-joining of an aluminium-magnesium alloy (AA5058) and poly-methyl-methacrylate sheets to attain sound and defect-free joints was examined. The inter-mixing flow patterns between the metal and polymer counterparts during FSW were predicted by employing three-dimensional finite element models. It is shown that the bonding mechanism between the dissimilar materials is mechanical interlocking at the interface which controls the joint strength depending on the processing parameters. The most suitable dissimilar lap-joining regarding microstructural soundness is attained at w= 1600 rev min−1 and v = 25 mm min−1. Under this condition, the maximum joint strength, which is about ∼60% of the weakest base material, is attained. Fractography indicates that the rupture occurs from the aluminium side. © 2017 Institute of Materials, Minerals and Mining. Published by Taylor & Francis on behalf of the Institute
  6. Keywords:
  7. Aluminium alloy ; Dissimilar joining ; Friction-stir welding ; Mechanical property ; Thermo-mechanical modelling ; Aluminum ; Aluminum alloys ; Bonding ; Dissimilar materials ; Esters ; Finite element method ; Fracture mechanics ; Friction ; Interfaces (materials) ; Joining ; Magnesium ; Magnesium alloys ; Magnesium printing plates ; Mechanical properties ; Microstructure ; Research laboratories ; Strength of materials ; Tribology ; Welding ; Aluminium-magnesium alloys ; Friction stir welding(FSW) ; Mechanical interlocking ; PMMA ; Processing parameters ; Thermo-mechanical ; Three dimensional finite element model ; Friction stir welding
  8. Source: Science and Technology of Welding and Joining ; Volume 23, Issue 1 , 2018 , Pages 35-49 ; 13621718 (ISSN)
  9. URL: https://www.tandfonline.com/doi/abs/10.1080/13621718.2017.1323441