We report on the magnetic properties of ${\mathrm{Fe}}_{1\ensuremath{-}x}{\mathrm{Al}}_{x}$ alloys $(0.2\ensuremath{\leqslant}x\ensuremath{\leqslant}0.4)$ produced by mechanical alloying by milling pure element powders for $t=12$, 24, and $36\phantom{\rule{0.3em}{0ex}}\mathrm{h}$. The alloys present a bcc lattice with compositional disorder and are ferromagnetic at room temperature, independently of the milling time. The lattice parameter of the $x=0.2$ sample presents a small decrease with $t$, whereas those of the $x=0.3$ and 0.4 samples remain constant independently of the milling time. The magnetic properties of the alloys with $x=0.2$ and 0.3 do not show important variations with $t$, while those of $x=0.4$ are strongly dependent on the milling time. For this latter alloy it was found that: (i) despite being the most diluted of the series, it presents a well developed ferromagnetic order at room temperature as the M\"ossbauer and hysteretic data have shown; (ii) the temperature dependence of the ac susceptibility and the M\"ossbauer spectra recorded at different temperatures evidence the occurrence of reentrant spin-glass and superparamagnetic phenomena. The enhancement of the ferromagnetic behavior and the presence of reentrant spin-glass freezing temperature and of a superparamagnetic blocking process are interpreted in terms of a simple localized model based on the disorder present in that alloy and on the occurrence of competitive interactions, namely, the ferromagnetic nearest-neighbor Fe-Fe interactions and the antiferromagnetic near-nearest-neighbor Fe-Fe ones. Taken together, these results evidence that the stabilization of the magnetic order takes place in the $x=0.4$ sample exclusively through the induction of compositional disorder and without any contribution from the lattice expansion.