STUDY ON IMPACT INDUCED FRAGMENTATION OF W/Zr ALLOY

Abstract

In this paper, the static and dynamic mechanical properties of tungsten-zirconium alloy and the impact crushing law of the material were studied, and the fracture morphology of the recovered samples was observed under scanning electron microscope. The true stress-strain curves under static and dynamic conditions were obtained by quasi-static compression experiment and split Hopkinson pressure bar experiment. It was found that the increase of tungsten content would decrease the plasticity and increase the yield strength of the material. The relationship between the residual mass of tungstenzirconium alloys and the size of the fragments under the impact velocity was obtained by Taylor impact experiment. It was found that the power law distribution theory for brittle materials could also describe the impact fragmentation of binary tungsten-zirconium alloys with non-brittle properties.