SANS study and a model for partially ordering during decomposition in bulk amorphous Zr41Ti14Cu12.5Ni10Be22.5 amorphous alloys

被引：13

作者：

Hermann, H

Wiedenmann, A

Uebele, P

机构：

[1] Inst Solid State & Mat Res Dresden, D-01171 Dresden, Germany

[2] Hahn Meitner Inst Kernforsch Berlin GmbH, D-14109 Berlin, Germany

来源：

PHYSICA B | 1997年 / 241卷

关键词：

small-angle scattering; amorphous alloys; decomposition;

D O I：

10.1016/S0921-4526(97)00585-1

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Small-angle neutron-scattering experiments have revealed information about the decomposition behaviour of Zr41Ti14Cu12.5Ni10Be22.5 bulk amorphous alloys. In the undercooled liquid range, a microstructure consisting of precipitates of an amorphous phase was observed. Experimental results showed that all scattering curves have a characteristic maximum. In wide intervals of annealing temperature and annealing time the curves obey a universal scaling law. This behaviour is reproduced by a model consisting of a hard-core arrangement of spherical particles with constant scattering length density in the core and a diffusion profile in a surrounding shell. The model is treated analytically at volume fractions below 12.5% and by computer simulation otherwise. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：352 / 354

页数：3

共 7 条

[1]

HERMANN H, 1991, STOCHASTIC MODELS HE, P51

[2] PREPARATION OF BULKY AMORPHOUS ZR-AL-CO-NI-CU ALLOYS BY COPPER MOLD CASTING AND THEIR THERMAL AND MECHANICAL-PROPERTIES [J].