Strain rate effects on the mechanical properties of high-purity α-titanium |

Issue		Volume 2, 2009 DYMAT 2009 - 9th International Conference on the Mechanical and Physical Behaviour of Materials under Dynamic Loading


Page(s)		1161 - 1166
Section		Micro-Structural Effects
DOI		10.1051/dymat/2009162
Published online		15 September 2009

DYMAT 2009 (2009) 1161-1166
DOI: 10.1051/dymat/2009162

Strain rate effects on the mechanical properties of high-purity α-titanium

M.E. Nixon¹, O. Cazacu² and J. House¹

¹ Air Force Research Laboratory, Munitions Directorate, Eglin AFB, FL 32542, USA
² Department of Mechanical & Aerospace Engineering, University of Florida/REEF, Shalimar, FL 32579, USA

Published online: 15 September 2009

Abstract
A comprehensive experimental study of strain rate effects on the deformation of high-purity, polycrystalline α-titanium plate is presented. Monotonic uniaxial compression and tension tests were carried out at room temperature under quasi-static conditions to quantify the plastic anisotropy and the tension-compression symmetry of the material. To characterize the material's strain rate sensitivity Split Hopkinson Pressure Bar tests at strain rates of 400 to 600/s were performed along the symmetry axes of the material. It was observed that for both quasi-static and dynamic loading the response is dependent on the orientation of the loading with respect to the <c> axis of the grains. A clear increase in strength with increasing strain rate was observed during loading in the rolling direction, whereas the hardening rate remains practically unchanged for all the other orientations.

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