Quantitative relationship between impact property and dynamic compressive performance of Ti alloy

To explore the relationship between impact property and cold upsetting finished product ratio of Ti alloy, the effect of microstructure parameter on impact property of Ti-3Al-5Mo-4.5V alloy was investigated systemically with quantitative statistical analysis method. The relationship among crack initiation energy, crack propagation energy, total impact energy and the width of shear band was analyzed combined with the variety of the width of shear band after dynamic compressive deformation. The result shows as follows. First, as anneal temperature rises, α platelet ratio (length/width) increases first and then decreases, crack initiation energy ascends first and then descends, while crack propagation energy diminishes first and then increases, and total impact energy ascends persistently. Second, there is no certain relationship between total impact energy and dynamic compressive performance; crack initiation energy is in inverse proportion to the width of shear band, while there is a positive correlation between the crack propagation energy and the width of shear band linearly.