Modelling microstructure evolution in ATI 718Plus® alloy

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The present study details the results of finite element analysis (FEA) based predictions for microstructure evolution in ATI 718Plus® alloy during the hot deformation process. A detailed description of models for static grain growth and recrystallisation is provided. The simulated average grain size is compared with those experimentally measured in aerofoil parts after trials. The proposed modified JMAK model has proved to be valid in the main body of the extruded part. The results predicted for the surface are less accurate. The recrystallised grain size on the surface is smaller than in the centre of the part which corresponds to the experimental results and reflects the main trend.
Original languageEnglish
Pages (from-to)352-359
Number of pages8
JournalKey Engineering Materials
Publication statusPublished - 17 Oct 2016
EventMetal forming 2016 - AGH – University of Science and Technology , Krakow, Poland
Duration: 18 Sep 201621 Sep 2016


  • ATI 718Plus®
  • microstructure evolution,
  • recrystallisation
  • FEM
  • grain growth
  • plastic work
  • extrusion
  • hot deformation


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