A simplified model for glass formationA simplified model of glass formation based on the formal theory of transformation kinetics is presented, which describes the critical cooling rates implied by the occurrence of glassy or partly crystalline bodies. In addition, an approach based on the nose of the time-temperature-transformation (TTT) curve as an extremum in temperature and time has provided a relatively simple relation between the activation energy for viscous flow in the undercooled region and the temperature of the nose of the TTT curve. Using this relation together with the simplified model, it now seems possible to predict cooling rates using only the liquidus temperature, glass transition temperature, and heat of fusion.
Document ID
19800039404
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Uhlmann, D. R. (Massachusetts Inst. of Tech. Cambridge, MA, United States)
Onorato, P. I. K. (MIT Cambridge, Mass., United States)
Scherer, G. W. (Corning Glass Works Corning, N.Y., United States)