The shock-densification behavior of three distinct Ni+Al powder mixtures

The shock-densification response of equivolumetric mixtures of Ni+Al powders of varying particle size and morphology has been determined through instrumented parallel-plate impact experiments. The results reveal a variation in the densification response, with crush strengths (stress at full density) ranging from 0.5 to nearly 6 GPa. A modified Fischmeister-Artz contact model was proposed to predict the crush strength of configurationally varying Ni+Al powder mixtures. (C) 2008 American Institute of Physics.