Effect of Mo on phase separation in Fe-40at% Cr alloys based on numerical solutions of the cahn hilliard equation

Yoshihiro Suwa, Yoshiyuki Saito

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Abstract

Effect of Mo on phase separation behavior of Cr in Fe-40 at%Cr-Mo ternary alloys was investigated with use of a model based on the Cahn-Hilliurd eqaution. Simulation result indicates that the addition of a small amount of Mo to an Fe-40 at%Cr binary alloy was found to accelerate phase separation. With addition of small amount of Mo up to 5 at%, the rate of phase separtion concentration of Cr along the trajectory of its peak top increases with time. Mechanism of this acceleration behavior of Cr was analyzed by using a theory on asymptotic behavior of substitutional element in ternary alloy proposed by the present authors.

Original languageEnglish
Pages (from-to)1891-1895
Number of pages5
JournalMaterials Transactions
Volume48
Issue number7
DOIs
Publication statusPublished - 2007 Jul

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Keywords

  • Asymptotic behavior
  • Cahn-hilliard equation
  • Iron-based ternary alloy
  • Phase separation

ASJC Scopus subject areas

  • Materials Science(all)
  • Metals and Alloys

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