Abstract
The study of the dynamic fracture of iron has been undertaken below and above phase transition. Light gas launcher and powder gun combined with Doppler Laser Interferometry (DLI) measurements have been used to evaluate the loading and spall fracture values. Symmetrical impacts have been conducted without windows below and above phase transformation to study the effects of both phase change kinetics and release transition on spallation response of iron. Shots performed below and above phase transition pressure show noticeable differences on pull back signals. Samples were soft recovered for SEM examination. Spall plane surfaces reveal several aspects linked to changes in material behavior. Simulations are conducted with a 2D hydrocode to compare experimental data with numerical results.
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