Effects of minor elements X(X=Mo, Ni, Ti) on aympotic behavior along peak top of the major elenet in Fe-Cr type alloys

Norihisa Takemoto, Yoshiyuki Saito

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Numerical simulations of phase separation in Fe-Cr-Mo and Fe-Cr-Ti ternary alloys and Fe-Cr-Mo-Ti quaternary alloys were performed with use of the Cahn-Hilliard equation for ternary alloys and quaternary alloys. We obtained that the asymptotic behaviours of minor element X(Mo, Ti) in Fe-Cr-X ternary alloys and Fe-Cr-Mo-Ti quaternary alloys along a trajectory of a peak top of the major element Cr was classified into three groups according to the sign of the second derivative of the chemical free energy with respect to the compositions of Cr and X(Mo, Ti). Theoretical analysis for the symptotic behavior Mo in Fe-Cr-Mo ternary has been formed in order to discuss the simulation results. Effect of the other elements, such as Ti on separation behaviours of Cr in Fe-Cr-Ti ternary alloys were also investigated. A simple theory for describing the effect of subsutitutonal element in Fe-Cr-X ternary alloys on the basis of simulations and theoretical analyses was proposed.

Original languageEnglish
Title of host publicationAdvanced Materials Research
Pages423-430
Number of pages8
Volume409
DOIs
Publication statusPublished - 2012
Event7th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC'2011 - Quebec City, QC
Duration: 2011 Aug 12011 Aug 5

Publication series

NameAdvanced Materials Research
Volume409
ISSN (Print)10226680

Other

Other7th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC'2011
CityQuebec City, QC
Period11/8/111/8/5

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Keywords

  • Asymptotic behavior
  • Duplex stainless
  • Fe-Cr-N-Mo alloys
  • Implicit method
  • Numerical simulation
  • Spinodal decomposition

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Takemoto, N., & Saito, Y. (2012). Effects of minor elements X(X=Mo, Ni, Ti) on aympotic behavior along peak top of the major elenet in Fe-Cr type alloys. In Advanced Materials Research (Vol. 409, pp. 423-430). (Advanced Materials Research; Vol. 409). https://doi.org/10.4028/www.scientific.net/AMR.409.423