Annihilation process of periodic antiphase boundaries in Cu3Pt studied with time dependent Ginzburg Landau model

Noriyuki Kuwano, Akiyoshi Matsumoto, Kenji Kajiwara, Kensuke Oki

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Kinetics of the annihilation process of periodic antiphase boundaries in a Cu3Pt alloy has been studied by computer-simulation and transmission electron microscope observation. The kinetic equation was derived from a general equation for the free energy of the system where the ordering and disordering undergo congruently. The excess free energy due to ordering was expressed by a Ginzburg-Landau type expansion, and the boundary energy was assumed to be proportional to the second derivatives of Sr and Sr 2, where Sr is the local degree of order at the position r in the system. The simulation was carried out for the annihilation process of flat antiphase boundaries which were arranged periodically, and the characteristic patterns of antiphase boundaries observed with an electron microscope were reproduced successfully.

Original languageEnglish
Pages (from-to)1163-1168
Number of pages6
Journalmaterials transactions, jim
Volume34
Issue number12
DOIs
Publication statusPublished - 1993
Externally publishedYes

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antiphase boundaries
Free energy
Electron microscopes
Kinetics
electron microscopes
free energy
Derivatives
kinetic equations
Computer simulation
computerized simulation
expansion
kinetics
simulation
energy

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Annihilation process of periodic antiphase boundaries in Cu3Pt studied with time dependent Ginzburg Landau model. / Kuwano, Noriyuki; Matsumoto, Akiyoshi; Kajiwara, Kenji; Oki, Kensuke.

In: materials transactions, jim, Vol. 34, No. 12, 1993, p. 1163-1168.

Research output: Contribution to journalArticle

Kuwano, Noriyuki ; Matsumoto, Akiyoshi ; Kajiwara, Kenji ; Oki, Kensuke. / Annihilation process of periodic antiphase boundaries in Cu3Pt studied with time dependent Ginzburg Landau model. In: materials transactions, jim. 1993 ; Vol. 34, No. 12. pp. 1163-1168.
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