Nanostructure and properties of a Cu-Cr composite processed by severe plastic deformation

被引：137

作者：

Sauvage, X. ^{[1
]}

Jessner, P. ^{[1
]}

Vurpillot, F. ^{[1
]}

Pippan, R. ^{[2
]}

机构：

[1] Univ Rouen, Grp Phys Mat, CNRS UMR 6634, F-76801 St Etienne, France

[2] Austrian Acad Sci, Erich Schmid Inst Mat Sci, CD Lab Local Anal Deformat & Fracture, A-8700 Leoben, Austria

来源：

SCRIPTA MATERIALIA | 2008年 / 58卷 / 12期

关键词：

nanocomposite; interdiffusion; severe plastic deformation; hardness; copper;

D O I：

10.1016/j.scriptamat.2008.02.010

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A Cu-Cr composite was processed by severe plastic deformation to investigate the role of interphase boundaries on the grain size reduction mechanisms. The as-deformed material exhibits a grain size of only 20 nm. This gives rise to a dramatic increase in the hardness. Some deformation-induced Cu supersaturated solid solutions were clearly exhibited and it is shown that they decrease the hardness. The formation of such supersaturated solid solutions and their influence on the mechanical properties are discussed. (C) 2008 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：1125 / 1128

页数：4

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