On the Quantitative Evaluation of Adiabatic Shear Banding Sensitivity of Various Titanium Alloys

Timium alloys exhibit attractive ballistic performances due to their low density and their high mechanical properties. They are unfortunately very sensitive to adiabatic shear localization. This study aims to determine an empirical parameter which allows to characterise the sensitivity to the adiabatic shear banding of different grades of titanium alloys. Dynamic punching tests by split Hopkinson pressure bar are performed on disc shaped specimen to obtain shear bands. This article deals with the possibility to size different materials according to their sensitivity to adiabatic shear on a defined scale with a such simple test R E S U M E Alliant hautes performances mCcaniques et faible densite, les alliages de t i m e semblent Cae de bons candidat. pour des applications de blindage. Nhnmoins. ils sont trEs sensibles a