Paper Title:
Strength and Plasticity of Ultra-Fine Grained Zirconium at Low Temperatures
  Abstract

Plasticity of ultra-fine grained (UFG) zirconium (grain size ~ 0.4 µm), produced by intensive plastic deformation (IPD) - a combination of extrusion, annealing, and drawing, have been studied within the temperature range 300 – 4.2 K in uniaxial compression. It was found that decrease of grain sizes in the result of IPD leads to considerable increase of strength characteristics for the UFG zirconium in comparison with coarse-grained (CG) zirconium (in 6 times at 300 K and 4 times at 77 K); and plasticity of the UFG zirconium keeps rather large (strain > 0.15). Two stages of the strain-hardening and decrease of the activation volume for plastic flow with deformation have been registered. A conclusion was made about the identity of basic deformation mechanisms in the UFG and CG zirconium: simultaneous action and mutual influence of intragrain dislocation gliding and twinning.

  Info
Periodical
Materials Science Forum (Volumes 584-586)
Edited by
Yuri Estrin and Hans Jürgen Maier
Pages
452-457
DOI
10.4028/www.scientific.net/MSF.584-586.452
Citation
E. D. Tabachnikova, A. V. Podolskiy, V. Z. Bengus, S.N. Smirnov, V.D. Natsik, V.M. Azhazha, M.A. Tikhonovsky, A.N. Velikodny, N.F. Andrievskaya, G.E. Storozhilov, T.M. Tikhonovskaya, "Strength and Plasticity of Ultra-Fine Grained Zirconium at Low Temperatures", Materials Science Forum, Vols. 584-586, pp. 452-457, 2008
Online since
June 2008
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Zhi Guo Chen, Zi Qiao Zheng, Dong Feng Han
Abstract:The hot deformation behaviors and microstructure in Al-Cu-Li alloy containing small amount of Ag and Mg were investigated by transmission...
1925
Authors: Atef S. Hamada, L. Pentti Karjalainen, Mahesh C. Somani, R.M. Ramadan
Abstract:The hot deformation behaviour of two high-Mn (23-24 wt-%) TWIP steels containing 6 and 8 wt-% Al with the fully austenitic and duplex...
217
Authors: Sabbah Ataya, Marcus Korthäuer, Essam El Magd
Abstract:Copper reinforced by tungsten particles has high potential applications in the fields of electronics and electric contacts where high...
1205
Authors: Gui Qing Chen, Gao Sheng Fu, Wen Duan Yan, Chao Zeng Cheng, Ze Chang Zou
Modeling, Analysis and Simulation of Manufacturing Processes
Abstract:The 3003 Al alloy was deformed by isothermal compression in the range of deformation temperature 300-500 °C at strain rate 0.0l-10.0...
306
Authors: Xiao Yu Zhong, Guang Jie Huang, Fang Fang He, Qing Liu
Abstract:Uni-axial tensile plastic deformation behavior of rolled magnesium alloy AZ31B under the temperature range from room temperature(RT) to 250°C...
219