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Ginzburg-Landau-Type Multiphase Field Model for Competing fcc and bcc Nucleation

Journal Article · · Physical Review Letters
 [1];  [2];  [3]
  1. Research Institute for Solid State Physics and Optics, Hungary
  2. ORNL
  3. Research Institute for Solid State Physics and Optics, Hungary and Brunel University, UK

We address crystal nucleation and fcc-bcc phase selection in alloys using a multiphase field model that relies on Ginzburg-Landau free energies of the liquid-fcc, liquid-bcc, and fcc-bcc subsystems, and determine the properties of the nuclei as a function of composition, temperature, and structure. With a realistic choice for the free energy of the fcc-bcc interface, the model predicts well the fcc-bcc phase-selection boundary in the Fe-Ni system.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC05-00OR22725
OSTI ID:
1008839
Journal Information:
Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 4 Vol. 106; ISSN 0031-9007
Country of Publication:
United States
Language:
English

References (26)

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