Linear friction welding of Ti6Al4V: experiments and modelling

Florian Schroeder, Robin Ward, A. R. Walpole, Richard Turner, Moataz Attallah, J.-C Gebelin, Roger Reed

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)


Linear friction welding of the Ti6Al4V alloy is studied. A new definition of the energy input rate is proposed, based on an integration over time of the in-plane force and velocity; a strong correlation with the upset rate is then found. The effective friction coefficient is estimated to be 0·5±0·1 for varying frequencies and amplitudes, with only a weak dependence on the processing conditions displayed. A model is proposed that accounts for both the conditioning and equilibrium stages of the process, which is shown to be in good agreement with the experimental data. The model is used to study the mechanism by which the flash is formed. A criterion is proposed by which the rippled nature of its morphology can be predicted.
Original languageEnglish
Pages (from-to)372-384
JournalMaterials Science and Technology
Issue number3
Publication statusPublished - Feb 2015


  • Linear friction welding
  • Ti6Al4V
  • Ripple formation
  • Flash formation


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