Modeling of lattice parameter in the Ni-Al system

Tao Wang, Jingzhi Zhu, Rebecca A. Mackay, Long-qing Chen, Zi-kui Liu

Research output: Contribution to journalArticle

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Abstract

Considering the effects of temperature and composition, a phenomenological description of lattice parameters in solid states was developed. The lattice parameter of the pure element is modeled under the assumption of a linear temperature dependence of thermal expansion, while the lattice parameters of substitutional solid-solution phases are treated similar to the Gibbs-energy modeling in the CAL-PHAD (CALculation of PHAse Diagram) approach. Using this model, the lattice parameters of the γ and γ′ phases in the Ni-Al system were analyzed and the model parameters were evaluated. The calculated lattice parameters and mismatches show good agreement with existing experimental data.

Original languageEnglish (US)
Pages (from-to)2313-2321
Number of pages9
JournalMetallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Volume35 A
Issue number8
DOIs
StatePublished - Jan 1 2004

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All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys

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