Friction Stir Welding of Lap Joints Using New Al–Li Alloys for Stringer-Skin Joints

  • Egoitz AldanondoEmail author
  • Ekaitz Arruti
  • Alberto Echeverria
  • Iñaki Hurtado
Conference paper
Part of the The Minerals, Metals & Materials Series book series (MMMS)


The aeronautic industry is continuously looking for new structural concepts with the aim of reducing dangerous gas emissions as well as reducing manufacturing costs and times. The development of advanced lightweight structures is an effective alternative to achieve the mentioned goals. Reinforced panels produced by the third generation aluminum–lithium alloys and Friction Stir Welding (FSW) can bring new solutions for more efficient aircrafts. This work presents the results obtained in the development and characterization of FSW joints directed to reinforced panel manufacturing. FSW lap joints were produced using aluminum–lithium alloys AA2099-T83 extrusions and AA2060-T8E30 sheets. Several welding parameter combinations and FSW tool designs were used to produce the joints. Joint properties were investigated by metallographic examination, microhardness tests as well as mechanical strength testing. The appropriate FSW conditions to optimize joint properties were established.


Friction stir welding Lap joints Al–Li 



This work has been performed in the frame of the project ecoTECH within the AIRFRAME ITD of the Clean Sky 2 programme of the H2020. The authors acknowledge the funding received for this project under the project ID 807083 of the call H2020-IBA-CS2-GAMS-2017.


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Copyright information

© The Minerals, Metals & Materials Society 2019

Authors and Affiliations

  • Egoitz Aldanondo
    • 1
    Email author
  • Ekaitz Arruti
    • 1
  • Alberto Echeverria
    • 1
  • Iñaki Hurtado
    • 2
  1. 1.IK4 LORTEKOrdiziaSpain
  2. 2.Faculty of Engineering (MU-ENG)Mondragon UnibertsitateaArrasate-MondragonSpain

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