Computer models of phase separation dynamics in Fe-Cr-Mo ternary alloys

Y. Iwamoto, K. Goto, T. Kuwajima, E. Fukuhara, Y. Suwa, Y. Saito

Research output: Contribution to journalArticle

Abstract

Three dimensional microstructures resulting from phase separation in thermally aged Fe-Cr-Mo ternary alloys were investigated by using Monte Carlo simulation and numerical solution of the Cahn-Hilliard equation. The Monte Carlo simulation result indicates that Cr rich regions were formed in an Fe-40at.%Cr-5at.%Mo alloy and that Mo atoms enriched into the Cr rich region and/or boundaries of Cr/Fe rich regions. Behaviors of the major and minor elements, Mo and Cr, in an Fe-40at.%Mo-5at.%Cr alloy were similar to those of Cr and Mo in the Fe-40at.%Cr-5at.%Mo alloy. The first peak position of the structure factor of a major element moved to the shorter side of the wave number with the increase of aging temperature. Analysis of the static structure factor of a minor element indicates that the bifurcation formation of concentration profile of the minor element occurs at peak positions of the major element, which is predicted by a theory based on the Cahn-Hilliard equation.

Original languageEnglish
Pages (from-to)1059-1064
Number of pages6
JournalUnknown Journal
Volume426-432
Issue number2
Publication statusPublished - 2003

Fingerprint

Ternary alloys
ternary alloys
Phase separation
simulation
Aging of materials
Atoms
microstructure
Microstructure
profiles
atoms
Temperature
temperature
Monte Carlo simulation

Keywords

  • Cahn-Hilliard equation
  • Computer simulation
  • Iron-chromium-molybdenum alloys
  • Monte Carlo method
  • Phase separation

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Iwamoto, Y., Goto, K., Kuwajima, T., Fukuhara, E., Suwa, Y., & Saito, Y. (2003). Computer models of phase separation dynamics in Fe-Cr-Mo ternary alloys. Unknown Journal, 426-432(2), 1059-1064.

Computer models of phase separation dynamics in Fe-Cr-Mo ternary alloys. / Iwamoto, Y.; Goto, K.; Kuwajima, T.; Fukuhara, E.; Suwa, Y.; Saito, Y.

In: Unknown Journal, Vol. 426-432, No. 2, 2003, p. 1059-1064.

Research output: Contribution to journalArticle

Iwamoto, Y, Goto, K, Kuwajima, T, Fukuhara, E, Suwa, Y & Saito, Y 2003, 'Computer models of phase separation dynamics in Fe-Cr-Mo ternary alloys', Unknown Journal, vol. 426-432, no. 2, pp. 1059-1064.
Iwamoto Y, Goto K, Kuwajima T, Fukuhara E, Suwa Y, Saito Y. Computer models of phase separation dynamics in Fe-Cr-Mo ternary alloys. Unknown Journal. 2003;426-432(2):1059-1064.
Iwamoto, Y. ; Goto, K. ; Kuwajima, T. ; Fukuhara, E. ; Suwa, Y. ; Saito, Y. / Computer models of phase separation dynamics in Fe-Cr-Mo ternary alloys. In: Unknown Journal. 2003 ; Vol. 426-432, No. 2. pp. 1059-1064.
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