Spatial localization of the nucleation rate and formation of inhomogeneous nanocrystalline dispersions in deeply undercooled glass forming liquids

被引：11

作者：

Bossuyt, S ^{[1
]}

机构：

[1] CALTECH, Div Engn & Appl Sci, Pasadena, CA 91125 USA

来源：

SCRIPTA MATERIALIA | 2001年 / 44卷 / 12期

关键词：

amorphous materials; metallic glass; crystallization; recalescence;

D O I：

10.1016/S1359-6462(01)00974-5

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The microstructure in bulk metallic glass forming alloys cooled close to the critical cooling rate for glass formation was explained by considering the effect of the heat of crystallization on the temperature dependent nucleation and growth rates. The localized heat release from crystals nucleated early in the crystallization process led to localized recalescence events, involving the formation of a high density of nanocrystals, in the deeply undercooled liquid. The critical cooling rate for glass formation was determined by the interaction of these localized recalescence events.

引用

页码：2781 / 2787

页数：7

共 19 条

[1] DECOMPOSITION AND PRIMARY CRYSTALLIZATION IN UNDERCOOLED ZR41.2TI13.8 CU12.5NI10.0BE22.5 MELTS [J].