期刊
SCRIPTA MATERIALIA
卷 58, 期 12, 页码 1106-1109出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2008.02.006
关键词
metallic glass; thermally activated process; thermal expansion coefficient
The thermal expansion coefficients of 13 metallic glasses were measured using a thermo-mechanical analyser. A unique correlation was found between the linear thermal expansion coefficient and the glass transition temperature-their product is nearly constant similar to 8.24 x 10(-3). If one assumes the Debye expression for thermal activation, the total linear thermal expansion up to glass transition temperature (T-g) is reduced to 6 x 10(-3), nearly 25% of that at the fusion of pure metals. (C) 2008 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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