A methodology for the study of Friction Stir Welded butt joints applied to unweldable aerospace aluminium alloys

  1. Del Sol, I 1
  2. Piñero, D 1
  3. Caballero, J 1
  4. Astarita, A 2
  5. Salguero, J 1
  1. 1 Mechanical Engineering and Industrial Design Department, University of Cádiz, Puerto Real, E-11519, Spain
  2. 2 Department of Chemical, Materials and Production Engineering, University of Napoli Federico II, Naples, I-80138, Italy
Revue:
IOP Conference Series: Materials Science and Engineering

ISSN: 1757-8981,  1757-899X

Année de publication: 2021

Volumen: 1193

Número: 1

Pages: 012018

Type: Article

DOI: 10.1088/1757-899X/1193/1/012018 GOOGLE SCHOLAR lock_openAccès ouvert editor

D'autres publications dans: IOP Conference Series: Materials Science and Engineering

Objectifs de Développement Durable

Résumé

Weight reduction is a constant improvement point for the aerospace sector.The joining of difficult to weld materials such as 2xxx and 7xxx aluminium series alloyshas attracted the attention to Friction Stir Welding (FSW) in this field. This solid statewelding process has already been presented as an environmentally friendly alternativefor riveted joints and conventional welding operation in the automobile sector.Unfortunately, its application on the aeronautical sector is not completely studied at themoment and concerns about its quality and in-service behaviour have delayed itsimplementation. This paper stablished a methodology to study the effect of the weldingparameter and applied it to a structural aluminium AA2024-T3, covering the design ofthe testing bench, the tool, the process monitoring and the analysis of the quality andmain mechanical properties of the joint. The results showed the impact of the weldingparameters on the quality of the joint. The burr and the roughness were optimised for850 rpm and the forces were reduced up to 30% for this rotational speed. Similarly, themechanical properties were reduced by up to 61.5% and 45% compared to the basematerial for the UTS and microhardness respectively

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