  We report elastic neutron scattering and transport measurements on the Ni and
Cr equivalently doped iron pnictide BaFe$_{2-2x}$Ni$_{x}$Cr$_{x}$As$_{2}$.
Compared with the electron-doped BaFe$_{2-x}$Ni$_{x}$As$_{2}$, the long-range
antiferromagnetic (AF) order in BaFe$_{2-2x}$Ni$_{x}$Cr$_{x}$As$_{2}$ is
gradually suppressed with vanishing ordered moment and N\'{e}el temperature
near $x= 0.20$ without the appearance of superconductivity. A detailed analysis
on the transport properties of BaFe$_{2-x}$Ni$_{x}$As and
BaFe$_{2-2x}$Ni$_{x}$Cr$_{x}$As$_{2}$ suggests that the non-Fermi-liquid
behavior associated with the linear resistivity as a function of temperature
may not correspond to the disappearance of the static AF order. From the
temperature dependence of the resistivity in overdoped compounds without static
AF order, we find that the transport properties are actually affected by Cr
impurity scattering, which may induce a metal-to-insulator crossover in highly
doped BaFe$_{1.7-y}$Ni$_{0.3}$Cr$_{y}$As$_{2}$.
