Extended antiphase boundaries in the DO3 ordered phase in a nonstoichiometric Fe3Si alloy

Syo Matsumura, Shunjiro Takeuchi, Yoshinobu Tahara, Kensuke Oki

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

High resolution transmission electron microscopy (HREM) was employed to study antiphase boundaries (APBs) with (100)/2 translation of DO3-type order in a nonstoichiometric Fe-14.6 at%Si alloy annealed at 873 K for various durations. We observed APBs in edge-on orientation, and recognized extended regions where lattice fringes are distorted or extinguished. The width of the regions observed increases up to about 2.5 nm with the annealing time. It is concluded that APBs are wetted by partially disordered layers due to segregation of excess Fe atoms, as predicted by statistical thermodynamics of nonstoichiometric ordering alloys.

Original languageEnglish
Pages (from-to)310-314
Number of pages5
JournalJournal of Electron Microscopy
Volume42
Issue number5
Publication statusPublished - Oct 1 1993

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antiphase boundaries
Statistical mechanics
High resolution transmission electron microscopy
Transmission Electron Microscopy
Thermodynamics
Annealing
Atoms
thermodynamics
transmission electron microscopy
annealing
high resolution
atoms

All Science Journal Classification (ASJC) codes

  • Instrumentation

Cite this

Extended antiphase boundaries in the DO3 ordered phase in a nonstoichiometric Fe3Si alloy. / Matsumura, Syo; Takeuchi, Shunjiro; Tahara, Yoshinobu; Oki, Kensuke.

In: Journal of Electron Microscopy, Vol. 42, No. 5, 01.10.1993, p. 310-314.

Research output: Contribution to journalArticle

Matsumura, Syo ; Takeuchi, Shunjiro ; Tahara, Yoshinobu ; Oki, Kensuke. / Extended antiphase boundaries in the DO3 ordered phase in a nonstoichiometric Fe3Si alloy. In: Journal of Electron Microscopy. 1993 ; Vol. 42, No. 5. pp. 310-314.
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