Freezing diagrams: Part I. Development and Implications for glass formability

John D.H.St. (1989) Freezing diagrams: Part I. Development and Implications for glass formability. Metallurgical Transactions A, 20 2: 287-297. doi:10.1007/BF02670255


Author John D.H.St.
Title Freezing diagrams: Part I. Development and Implications for glass formability
Journal name Metallurgical Transactions A
ISSN 0360-2133
Publication date 1989-01-01
Sub-type Article (original research)
DOI 10.1007/BF02670255
Open Access Status Not yet assessed
Volume 20
Issue 2
Start page 287
End page 297
Total pages 11
Publisher Springer-Verlag
Subject 3104 Condensed Matter Physics
2506 Metals and Alloys
2211 Mechanics of Materials
2200 Engineering
Abstract Prediction of equilibrium and metastable phase formation for a particular system, after cooling from the liquid state, is possible by the development of a freezing diagram. the freezing diagram is constructed by consideration of kinetic as well as thermodynamic factors. The kinetic factors divide the diagram into three zones. These are: (1) where long-range diffusion can occur; (2) where short-range diffusion only is possible; and (3) where no significant diffusion is possible in the liquid ahead of the solid-liquid interface. The solid-liquid interface temperature, T 1, determines which diffusion process occurs. T 1 is the vertical axis of the diagram plotted against composition. the microstructure that results is predicted by the thermodynamic possibilities in each kinetic zone. In the first zone, the equilibrium phase diagram is applicable. The second zone only allows massive transformations to single-phase structures, and their limits are defined by T o lines. The third zone is below the glass transition temperature, and any liquid retained to this zone is quenched-in and becomes a glass. The development, significance, and limitations of the freezing diagram are discussed.
Q-Index Code C1
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import - Archived
 
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