Penetration Damaging Behavior of TB17 Titanium Alloy

摘要

The damage behavior of TB17 titanium alloy with ultra-high strength was studied by 12.7mm diameter armor piercing test. The damage characteristics and mechanism of damaging were analyzed by the observation of damage morphology of target board. The results indicated that the opening area was irregular at the opening stage, the internal wall turtle-shell-like or poly-porous, a few cracks and no adiabatic shear band was observed. The zone was parabolic at the penetrating stage, the internal wall was granular or river pattern, the adiabatic shear bands and fragments existed around the crater. A large number micro-pores and micro-cracks originating from the adiabatic shear bands expanded, forming macroscopic cracks. Finally, the target board fractured.