In 2019, a novel WHA was fabricated, replacing the traditional Ni-Fe matrix phase with a high entropy alloy matrix. This system was found to easily induce adiabatic shear band formation. The matrix phase includes nanoprecipitates that increase the matrix hardness. It is posited that these precipitates dissolve upon temperature rise, leading to softening of the matrix along the shear zone, thereby reducing the barrier for shear band propagation.