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Effects of Thermomechanical History on Properties of Glasses
Author(s) -
TAKAMORI TAKESHI
Publication year - 1963
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1963.tb11752.x
Subject(s) - borosilicate glass , materials science , deformation (meteorology) , composite material , anisotropy , thermal expansion , atmospheric temperature range , thermal , glass transition , mineralogy , thermodynamics , optics , geology , polymer , physics
Effects of thermomechanical history on properties of glasses of various compositions were studied. Reduction of thermal expansivity near the transformation range observed in each sample glass was attributed to the frozen elastic deformation. Optical anisotropy observed in most borosilicate glasses was attributed to plastic deformation. It is proposed that the plastic deformation is dependent on the tendency of the glass toward phase separation. The concept of glassy microphases suggested by Moriya can be used to explain experimental results qualitatively.