X-RAY TOPOGRAPHIC STUDY OF THE PHASE TRANSFORMATION IN In-Tl ALLOY SINGLE CRYSTALS.

Osamu Nittono, Yasumasa Koyama

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Progress of the crystallographic transformation as well as the twinned tetragonal structure in indium-rich thallium alloy single crystals was studied by means of X-ray diffraction topography. Single crystals examined are prepared by both the recrystallization and Bridgman methods. The transformation from the fcc phase and the fct phase on cooling is martensitic, and single crystals transform by the migration of a single interface. Since no evidence for diffusion was obtained, the observed phases are necessarily metastable and, therefore, usual representation of the two phase field in an equilibrium phase seems to be inappropriate.

Original languageEnglish
Pages (from-to)56-63
Number of pages8
JournalNippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
Volume42
Issue number1
Publication statusPublished - 1978
Externally publishedYes

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phase transformations
Phase transitions
Single crystals
X rays
Thallium alloys
thallium alloys
single crystals
indium alloys
Indium
Crystal growth from melt
x rays
Bridgman method
Phase equilibria
Topography
topography
Crystallization
Cooling
cooling
X ray diffraction
diffraction

ASJC Scopus subject areas

  • Metals and Alloys

Cite this

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abstract = "Progress of the crystallographic transformation as well as the twinned tetragonal structure in indium-rich thallium alloy single crystals was studied by means of X-ray diffraction topography. Single crystals examined are prepared by both the recrystallization and Bridgman methods. The transformation from the fcc phase and the fct phase on cooling is martensitic, and single crystals transform by the migration of a single interface. Since no evidence for diffusion was obtained, the observed phases are necessarily metastable and, therefore, usual representation of the two phase field in an equilibrium phase seems to be inappropriate.",
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AU - Nittono, Osamu

AU - Koyama, Yasumasa

PY - 1978

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N2 - Progress of the crystallographic transformation as well as the twinned tetragonal structure in indium-rich thallium alloy single crystals was studied by means of X-ray diffraction topography. Single crystals examined are prepared by both the recrystallization and Bridgman methods. The transformation from the fcc phase and the fct phase on cooling is martensitic, and single crystals transform by the migration of a single interface. Since no evidence for diffusion was obtained, the observed phases are necessarily metastable and, therefore, usual representation of the two phase field in an equilibrium phase seems to be inappropriate.

AB - Progress of the crystallographic transformation as well as the twinned tetragonal structure in indium-rich thallium alloy single crystals was studied by means of X-ray diffraction topography. Single crystals examined are prepared by both the recrystallization and Bridgman methods. The transformation from the fcc phase and the fct phase on cooling is martensitic, and single crystals transform by the migration of a single interface. Since no evidence for diffusion was obtained, the observed phases are necessarily metastable and, therefore, usual representation of the two phase field in an equilibrium phase seems to be inappropriate.

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