期刊
MATERIALS CHARACTERIZATION
卷 92, 期 -, 页码 1-14出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.matchar.2014.02.003
关键词
Ultrafine-grain material; Severe plastic deformation; Microstructure; Dynamic recrystallization; Steady state
类别
资金
- French program Investment in the future [ANR-11-LABX-0008-01]
- ARC Discovery Early Career Researcher Award [DE130100274]
- Australian Research Council [DE130100274] Funding Source: Australian Research Council
As a relatively simple top-down technique to produce nanomaterials in bulk, severe plastic deformation became a new way of transforming the microstructure of the material. When carried out at sufficiently low temperature, extreme large plastic deformations lead to ultrafine-grain or nearly nano-structured material. The aim of the present tutorial review is to give basic insight into the field of ultrafine-grain materials obtained by severe plastic deformation. The main features of the obtained microstructures are presented, the most important advantage of ultrafine-grain materials - an enhanced mechanical strength with respect to their coarse grained counterparts - is discussed. The operating deformation mechanisms that lead to the grain refinement are also examined. Finally, dynamic recrystallization which produces the ultrafine-grain structure is characterized and the main results of modeling efforts reproducing the grain refinement and several microstructure features are presented. (C) 2014 Elsevier Inc. All rights reserved.
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