Effect of preliminary strain hardening on the flow stress of titanium and a titanium alloy during shock compression

S. V. Razorenov, A. S. Savinykh, E. B. Zaretsky, G. I. Kanel, Yu R. Kolobov

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

The effect of preliminary strain hardening of VT1-0 titanium and a Ti-6 wt % Al-4 wt % V alloy on their mechanical properties under quasi-static and high-rate (>105 s-1) loading is studied. Preliminary hardening is accomplished using equal-channel angular pressing (which results in a significant decrease in the grain size and a twofold increase in the quasi-static yield strength) and shock waves. High-rate deformation is attained via shock-wave loading of samples. The experimental results show that structural defects weaken the dependence of the yield strength on the strain rate. The difference in the rate dependences can be so high that the effect of these defects on the flow stress can change sign when going from quasi-static to high-rate loading.

Original languageEnglish
Pages (from-to)663-669
Number of pages7
JournalPhysics of the Solid State
Volume47
Issue number4
DOIs
StatePublished - 20 Jul 2005

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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