Coarsening kinetics of γ′ precipitates in the Ni-Al-Mo system

Tao Wang, Guang Sheng, Zi-kui Liu, Long-qing Chen

Research output: Contribution to journalArticle

66 Citations (Scopus)

Abstract

The effect of Mo on the microstructure evolution and coarsening kinetics of γ′ precipitates in the Ni-Al-Mo system is studied using phase-field simulations with inputs from thermodynamic, kinetic and lattice parameter databases. For alloys of different compositions, the precipitate morphology and the statistical information of precipitate sizes are predicted as a function of annealing time. It is observed that increasing Mo content leads to a change of the precipitate morphology from being cuboidal to spherical as well as a reduction in the coarsening rate. Comparison between simulated results and existing experimental microstructure morphologies and coarsening rates shows good agreements.

Original languageEnglish (US)
Pages (from-to)5544-5551
Number of pages8
JournalActa Materialia
Volume56
Issue number19
DOIs
StatePublished - Nov 1 2008

Fingerprint

Coarsening
Precipitates
Kinetics
Microstructure
Kinetic parameters
Lattice constants
Thermodynamics
Annealing
Chemical analysis

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Polymers and Plastics
  • Metals and Alloys

Cite this

Wang, Tao ; Sheng, Guang ; Liu, Zi-kui ; Chen, Long-qing. / Coarsening kinetics of γ′ precipitates in the Ni-Al-Mo system. In: Acta Materialia. 2008 ; Vol. 56, No. 19. pp. 5544-5551.
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Coarsening kinetics of γ′ precipitates in the Ni-Al-Mo system. / Wang, Tao; Sheng, Guang; Liu, Zi-kui; Chen, Long-qing.

In: Acta Materialia, Vol. 56, No. 19, 01.11.2008, p. 5544-5551.

Research output: Contribution to journalArticle

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AB - The effect of Mo on the microstructure evolution and coarsening kinetics of γ′ precipitates in the Ni-Al-Mo system is studied using phase-field simulations with inputs from thermodynamic, kinetic and lattice parameter databases. For alloys of different compositions, the precipitate morphology and the statistical information of precipitate sizes are predicted as a function of annealing time. It is observed that increasing Mo content leads to a change of the precipitate morphology from being cuboidal to spherical as well as a reduction in the coarsening rate. Comparison between simulated results and existing experimental microstructure morphologies and coarsening rates shows good agreements.

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