Atomistic theory of bulk metallic glass formation

被引：0

作者：

Egami, T. ^{[1
,2
]}

机构：

[1] Dept. of Mat. Sci. and Eng., Lab. for Res. on the Struct. Matter, University of Pennsylvania, Philadelphia, PA 19104, United States

[2] Lujan Center for Neutron Scattering, LANSCE, Los Alamos National Laboratory, Los Alamos, NM 87545, United States

来源：

| 2003年 / Materials Research Society卷 / 754期

关键词：

Composition - Computer simulation - Cooling - Glass transition - Molecular dynamics - Temperature;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Bulk metallic glass can be formed only when the critical cooling rate for glass formation is reduced to 100-2 K/sec. However, a cooling rate achievable with molecular dynamics simulation is higher by many orders of magnitude, so the gap has to be abridged by analytical theories. We propose a theory of bulk metallic glass formation based upon our early theories of glass formation composition. The critical concepts include the idea of local glass transition, distributed local glass transition temperatures and coincident local fluctuation for atomic transport. Strong repulsion between small atoms was recognized for the first time as the necessary condition for bulk glass formation.

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