Severe plastic deformation of amorphous alloys: I. Structure and mechanical properties

被引：38

作者：

Glezer A.M. ^{[1
]}

Plotnikova M.P. ^{[1
]}

Shalimova A.V. ^{[1
]}

Dobatkin S.V. ^{[2
]}

机构：

[1] Bardin Central Research Institute for Ferrous Metallurgy (TsNIIchermet), Moscow

[2] Baikov Institute for Metallurgy and Science of Materials, Russian Academy of Sciences, Moscow

来源：

Bulletin of the Russian Academy of Sciences: Physics | 2009年 / 73卷 / 9期

基金：

俄罗斯基础研究基金会;

关键词：

Shear Band; Amorphous Alloy; Severe Plastic Deformation; Amorphous Matrix; Local Atomic Structure;

D O I：

10.3103/S1062873809090123

中图分类号：

学科分类号：

摘要：

The basic regularities of variation in the structure and mechanical properties of amorphous Ni44Fe29Co15 Si2B10 alloy at severe plastic deformation (SPD) in a Bridgman cell at different temperatures are considered. It is shown that SPD is accompanied by homogeneous nanocrystallization, which is caused by the plastic flow mode. The transition from inhomogeneous mode of plastic flow to a qualitatively different one has been detected. The SPD structural model of deformational "dissolving" of crystals is proposed to explain why nanocrystals no more than 10 nm in size are observed during SPD. It is found that thermally activated nanocrystallization may occur at very low temperatures (77 K) under very high stress and with a high concentration of excess free volume. © Allerton Press, Inc. 2009.

引用

页码：1233 / 1239

页数：6

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