This paper describes the determination of the local atomic structure of amorphous TM 6 0 Ti 4 0 (TM=Fe, Co, Ni) alloys produced by mechanical alloying (MA) technique. The interatomic distances and the coordination numbers for the TM-TM, TM-Ti and Ti-Ti first neighbors were obtained by making the deconvolution of the first atomic shells of the radial distribution functions, which were calculated from the measured X-ray scattering patterns for the three alloys. The deconvolution was possible because the local atomic structures of these alloys can be accurately predicted by the additive hard-sphere (AHS) model. Thus, the number of TM-TM and TM-Ti first neighbors given by the AHS were used in the deconvolution to find the number of minority Ti-Ti pairs. Our results show complete amorphization for the Ni 6 0 Ti 4 0 and Co 6 0 Ti 4 0 alloys and partial amorphization in the case of the Fe 6 0 Ti 4 0 alloy. These results are consistent with the free enthalpies of mixing for these alloys. A chemical short-range order, greater than expected, was found in the Fe 6 0 Ti 4 0 alloy and attributed to partial amorphization of the Fe-Ti system by MA.