Microstructure evolution in a 6082 aluminium alloy during thermomechanical treatment

Cecilia Poletti*, Romain Bureau, Peter Loidolt, Peter Simon, Stefan Mitsche, Mirjam Spuller

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Thermomechanical treatments of age-hardenable wrought aluminium alloys provoke microstructural changes that involve the movement, arrangement, and annihilation of dislocations, the movement of boundaries, and the formation or dissolution of phases. Cold and hot compression tests are carried out using a Gleeble® 3800 machine to produce flow data as well as deformed samples for metallography. Electron backscattered diffraction and light optical microscopy were used to characterise the microstructure after plastic deformation and heat treatments. Models based on dislocation densities are developed to describe strain hardening, dynamic recovery, and static recrystallisation. The models can describe both the flow and the microstructure evolutions at deformations from room temperatures to 450 °C. The static recrystallisation and static recovery phenomena are modelled as a continuation of the deformation model. The recrystallisation model accounts also for the effect of the intermetallic particles in the movements of boundaries.

Original languageEnglish
Article number1319
Issue number8
Publication statusPublished - 30 Jul 2018


  • Aluminium alloy
  • Dislocations
  • Materials modelling
  • Recovery
  • Recrystallisation
  • Thermomechanical treatment

ASJC Scopus subject areas

  • Materials Science(all)


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