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Research Article

Macro-/micro-mechanical interlocking modification on the performance of hybrid friction stir spot welded aluminum/acrylonitrile butadiene styrene joints

Olatunji Oladimeji Ojo

Department of Industrial and Production Engineering, Federal University of Technology Akure, PMB 704, Akure, Nigeria

Keywords

Abstract



Aluminum alloy; 

Polymer; Threaded /unthreaded hole friction stir spot welding; 

Microstructure; 

Mechanical properties


Macro-/micro-mechanical interlocking enhancement of hybrid aluminum/acrylonitrile butadiene styrene (Al/ABS) joint is investigated via the use of joint modification approaches such as pre-fabricated threaded- and unthreaded-hole friction stir spot welding processes. The structure, tensile-shear failure load, and fracture behavior of the as-welded hybrid Al/ABS joints were investigated. Hybrid Al/ABS joint fabricated with threaded hole shows superior tensile-shear failure load due to the combined effects of compressive shearing-induced and threading-induced mechanical interlocks, and adhesion bonding mechanisms. The tensile-shear failure load of the threaded joint improved from 654 to 749 N as the tool rotational speed is increased from 710 to 1120 rpm. A rise in tool rotational speed improves the failure resistance of the hybrid Al/ABS joints (threaded and unthreaded) owing to the enhanced mechanical interlocking, bigger Al anchor/chip, and smaller interfacial gap between the re-solidified ABS and Al anchor. Threading and tool rotational speed have significant impacts on the fracture location and mode of the hybrid Al/ABS joint. The pre-fabricated threaded-hole friction stir spot welding process is thus recommended for the enhanced micro/macro-interlocking in hybrid Al/polymer joints.

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8/12/2023 Special Issue: Embark on a journey of innovation with the journal of Research on Engineering Structures and Materials as we unveil a compelling opportunity for contributors in our upcoming special issue, "Design, Analysis, and Manufacturing of Composite Vehicle Structures." Led by distinguished Guest Editors Liubov Gavva and Oleg Mitrofanov from Moscow Aviation Institute. For more info see the link.


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27/12/2022 Reviewer AwardsThe winners of 2022 reviewer awards of Research on Engineering Structures and Materials (RESM) are announced. More information can be found at Reviewer Awards section. 


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LATEST AWARDS


2022 Reviewer Awards:

Please, visit Reviewer Awards section for the winners of the 2022 RESM reviewer awards.


2022 Best Paper Award:

The paper authored by Nitin Kumar, Michele Barbato, Erika L. Rengifo-López and Fabio Matta entitled as “Capabilities and limitations of existing finite element simplified micro-modeling techniques for unreinforced masonry” is awarded the 


2022 Most Cited Paper Award:

The paper authored by Aykut Elmas, Güliz Akyüz, Ayhan Bergal, Müberra Andaç and Ömer Andaç entitled as “Mathematical modelling of drug release" is awarded the


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