APPLICATION OF DISORDER TRAPPING THEORY TO THE SOLIDIFICATION OF NI3AL

Authors
ASSADI H GREER AL
Citation
H. Assadi et Al. Greer, APPLICATION OF DISORDER TRAPPING THEORY TO THE SOLIDIFICATION OF NI3AL, ISIJ international, 35(6), 1995, pp. 574-579
Citations number
13
Categorie Soggetti
Metallurgy & Metallurigical Engineering
Journal title
ISIJ international → ACNP
ISSN journal
09151559
Volume
35
Issue
6
Year of publication
1995
Pages
574 - 579
Database
ISI
SICI code
0915-1559(1995)35:6<574:AODTTT>2.0.ZU;2-Y
Abstract
A numerical analysis is presented of the solidification of composition s close to Ni3Al. A two-sublattice thermodynamic model for the gamma a nd gamma' phases is combined with disorder trapping theory and dendrit e growth modelling based on the marginal stability hypothesis. It is t hereby possible to predict the composition and degree of order in the growing solid as a function of liquid composition and undercooling. Pr eliminary results are presented on solidification of the liquid of com position Ni-25at%Al.