The contribution of grain boundary dislocations to the plastic deformationof nanostructured titanium from the SD-effect of the yield stress

Authors
Tabachnikova, ED Bengus, VZ Stolyarov, VV Raab, GI Valiev, RZ Csach, K Miskuf, J
Citation
Ed. Tabachnikova et al., The contribution of grain boundary dislocations to the plastic deformationof nanostructured titanium from the SD-effect of the yield stress, MAT SCI E A, 309, 2001, pp. 524-527
Citations number
12
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN journal
09215093 → ACNP
Volume
309
Year of publication
2001
Pages
524 - 527
Database
ISI
SICI code
0921-5093(20010715)309:<524:TCOGBD>2.0.ZU;2-2
Abstract
The deformation curves in uniaxial tension and compression at 300 K were st udied for commercial grade Ti and for ultrafine-grained Ti with different n anostructures produced by severe plastic deformation through equal channel angular pressing (ECAP) and subsequent thermal treatment. It is found that differences between the yield stresses in tension and compression (SD-effec t) depend on the structural states of Ti and on the texture of the samples. The SD-effect value differs considerably for samples strained along direct ions parallel and perpendicular to the ECAP axis. The influence of the text ure upon the yield stress under uniaxial compression has been studied at 30 0, 77, and 4.2 K. (C) 2001 Elsevier Science B.V. All rights reserved.