HARDENING AND SOFTENING IN ZR-SN POLYCRYSTALS

Authors
TROJANOVA Z LUKAC P DLOUHY A
Citation
Z. Trojanova et al., HARDENING AND SOFTENING IN ZR-SN POLYCRYSTALS, Materials science & engineering. A, Structural materials: properties, microstructure and processing, 164(1-2), 1993, pp. 246-251
Citations number
21
Categorie Soggetti
Material Science
Journal title
Materials science & engineering. A, Structural materials: properties, microstructure and processing → ACNP
ISSN journal
09215093
Volume
164
Issue
1-2
Year of publication
1993
Pages
246 - 251
Database
ISI
SICI code
0921-5093(1993)164:1-2<246:HASIZP>2.0.ZU;2-0
Abstract
Polycrystalline samples of Zr-0.8Sn and Zr-6.0Sn alloys were deformed in tension at 650 K. The deformation behaviour of polycrystals is stud ied using analysis of the work-hardening coefficient theta=(dsigma/dep silon)epsilon,T vs. stress curves. Three models proposed by Kocks, Est rin and Mecking, and Roberts are used in the analysis. The models are applicable only in a certain stress region. The parameters of the mode ls (mean free path, annihilation length) are compared with some charac teristics of the microstructure (grain size, subgrain size, dislocatio n network).