Post-shear deformation of high pressure torsion-deformed nickel under hydrostatic pressure

被引：36

作者：

Hafok, M.

Pippan, R.

机构：

[1] Austrian Acad Sci, Erich Schmid Inst Mat Sci, A-8700 Leoben, Austria

[2] CDL Local Anal Deformat & Fracture, D-8700 Wurzburg, Germany

来源：

SCRIPTA MATERIALIA | 2007年 / 56卷 / 09期

关键词：

high pressure torsion; scanning electron microscopy (SEM); nickel; plastic deformation; grain boundary sliding;

D O I：

10.1016/j.scriptamat.2007.01.019

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In order to study the deformation mechanism of severe plastic deformed metals at very high strains, high pressure torsion experiments were performed. Backscatter electron images were used to characterize the change in microstructure after the shear deformation. Post-shear deformation of such samples under hydrostatic pressure revealed that the microstructure is sheared homogeneously, although some regions were found where microshear bands had formed. Grain boundary sliding at this very high strain was not observed during the experiment. (c) 2007 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：757 / 760

页数：4

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