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Linear friction welding of dissimilar AA6082 and AA2011 aluminum alloys: microstructural characterization and design guidelines

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Abstract

This paper presents the results of an experimental and numerical campaign on Linear Friction Welding of dissimilar AA2011-T8 and AA6082-T6 aluminum alloys. Experimental tests were carried out with constant oscillation amplitude and process time. Varying oscillation frequency, interface pressure, specimen geometry and mutual position were used. Grain size measurements, HV tests and EDX analysis were considered to characterize the microstructure of the joints as a function of the input process parameters. A thermal numerical model was utilized to predict the temperature profiles in the joints during the process. The obtained results allowed the identification of four weld categories: sound joints, “bonding limit” condition and two different unwelded joints. The investigation of the causes of the different joint behavior permitted to obtain a few design guidelines on the LFW of dissimilar alloys with different geometry.

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Authors and Affiliations

  1. Department of Chemical, Management, Computer Science, Mechanical Engineering, University of Palermo, Palermo, Italy

    Gianluca Buffa, Marco Cammalleri, Davide Campanella, Umberto La Commare & Livan Fratini

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  1. Gianluca Buffa
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  2. Marco Cammalleri
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  3. Davide Campanella
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  4. Umberto La Commare
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  5. Livan Fratini
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Correspondence to Gianluca Buffa.

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Buffa, G., Cammalleri, M., Campanella, D. et al. Linear friction welding of dissimilar AA6082 and AA2011 aluminum alloys: microstructural characterization and design guidelines. Int J Mater Form 10, 307–315 (2017). https://doi.org/10.1007/s12289-015-1279-y

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  • DOI: https://doi.org/10.1007/s12289-015-1279-y

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