ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Modeling of Glass transition is attempted based on the Cluster Variation Method. Freeenergy functional of an L10 ordered phase is employed to describe the first order nature of thetransition. Free energy contour surface calculated as a function of temperature and an orderparameter which simulates an amount of defects provides a generalized stability diagram in whichthe ideal glass transition temperature is identified as a critical point. Transition kinetics isinvestigated by Path Probability Method which is the kinetics version of the CVM to time domain.Continuous cooling behavior is calculated by explicitly incorporating the temperature dependentviscosity term based on VFT (Vogel-Fulcher-Tamman) formula. The glass transition is realized asthe freezing of the order parameter due to the enhanced viscosity. The extension of the presenttheoretical scheme to non-Bravais lattice is attempted by Continuous Cluster Variation Method
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/15/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.539-543.2425.pdf
