Effect of equal-channel angular pressing on the fatigue strength of titanium and a zirconium alloy
Abstract
The static and fatigue strength of commercial-purity VT1-00 titanium and a Zr-2.5% Nb alloy subjected to equal-channel angular pressing (ECAP) are studied. The formation of a submicrocrystalline structure after ECAP is shown to result in significant hardening, an increase in the fatigue life at high stress amplitudes, and an increase in the fatigue limit as compared to the annealed state. The mechanisms of fatigue fracture of the materials in various structural states are investigated.
- Publication:
-
Russian Metallurgy
- Pub Date:
- October 2011
- DOI:
- 10.1134/S0036029511100119
- Bibcode:
- 2011RuMet2011..981T