Superstrength of nanostructured metals and alloys produced by severe plastic deformation

被引：1
作者：
R. Z. Valiev
M. Yu. Murashkin
A. V. Ganeev
N. A. Enikeev
机构：
[1] Ufa State Aviation Technical University,Institute of Physics of Advanced Materials
来源：
The Physics of Metals and Metallography | 2012年 / 113卷
关键词：
ultra-fine-grained materials; severe plastic deformation; strength; nonequilibrium grain boundaries; grain-boundary segregations; Hall-Petch relationship;
D O I：
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中图分类号：
学科分类号：
摘要：
Metals and alloys produced by severe plastic deformation (SPD) are characterized by not only an ultrafine grain size, but also other structural features, such as nonequilibrium grain boundaries, nanotwins, grain-boundary segregations, and nanoparticles. The present work deals with the study of the effect of these features on the strength of SPD metals and alloys. In particular, it has been shown that, with segregations on grain boundaries and nonequilibrium boundaries, the yield stress of the material can exceed considerably the values extrapolated to the range of ultrafine grains using the Hall-Petch relationship.
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页码：1193 / 1201
页数：8
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