THE RELATION BETWEEN EMBRITTLEMENT AND STRUCTURAL RELAXATION OF AN AMORPHOUS METAL

被引：115

作者：

WU, TW ^{[1
]}

SPAEPEN, F ^{[1
]}

机构：

[1] HARVARD UNIV,DIV APPL SCI,CAMBRIDGE,MA 02138

来源：

PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICS ELECTRONIC OPTICAL AND MAGNETIC PROPERTIES | 1990年 / 61卷 / 04期

关键词：

D O I：

10.1080/13642819008219307

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The ductile-to-brittle transition temperature of a Fe79.3B16.4Si4.0C0.3 glass, determined by performing bend tests at different temperatures, has been observed to shift continuously with increasing annealing. This shift can be correlated with the change in enthalpy due to structural relaxation, measured by differential scanning calorimetry. The correlation can be described by a simple phenomenological model, based on the change in free volume during relaxation and a minimum free volume for ductility. This glass remains entirely homogeneous during the annealing treatments, and surface crystallization has been ruled out as a cause of brittle fracture. © 1990 Taylor & Francis Ltd.

引用

页码：739 / 750

页数：12

共 54 条

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Cahn R.W., 1984, MATER RES SOC S P, V28, P241

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