Multiscale microstructure modelling for nickel based superalloys

Hector Basoalto, Jeffery Brooks, I Di Martino

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The present paper is concerned with the development of multiscale modelling approaches for predicting the microstructural evolution and high temperature deformation characteristics of superalloys with special attention to creep and hot forming behaviour. A microstructure informed deformation model is presented that links rearrangements at the microscale to the overall macroscopic response of the material through a damage mechanics approach and results are presented on the application of the model to CMSX4. The control of microstructure, during the manufacture of nickel based superalloy components, is key to the development of the mechanical properties required for the high temperature applications typical of these materials. Results from empirical methods and a new physics based approach for modelling recrystallisation in polycrystalline superalloys are presented for the prediction of the grain size distributions produced during hot forming operations in Inconel alloy 718. A global macroscale modelling approach based on Neural Networks has been developed which includes the effects of composition, heat treatment and processing route and the effectiveness of the model for both property prediction and interpolation is demonstrated
Original languageEnglish
Pages (from-to)221-227
Number of pages7
JournalMaterials Science and Technology
Volume25
Issue number2
DOIs
Publication statusPublished - Feb 2009

Fingerprint

heat resistant alloys
Nickel
Superalloys
hot working
nickel
microstructure
Microstructure
Inconel (trademark)
High temperature applications
Microstructural evolution
predictions
microbalances
interpolation
Interpolation
Mechanics
Creep
heat treatment
Physics
grain size
Heat treatment

Keywords

  • recrystallisation
  • creep
  • hot-forming
  • superalloys
  • microstructure
  • neural networks
  • physics based modelling

Cite this

Basoalto, Hector ; Brooks, Jeffery ; Di Martino, I. / Multiscale microstructure modelling for nickel based superalloys. In: Materials Science and Technology. 2009 ; Vol. 25, No. 2. pp. 221-227.
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Multiscale microstructure modelling for nickel based superalloys. / Basoalto, Hector; Brooks, Jeffery; Di Martino, I.

In: Materials Science and Technology, Vol. 25, No. 2, 02.2009, p. 221-227.

Research output: Contribution to journalArticle

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