Titanium and magnesium elemental powders were processed by mechanical alloying to synthesize the nominal TixMg(100-x) (x = 100, 75, 50, 25 and 0 at.%) compositions. As a result, the solid solubility was successfully extended and nanostructured materials with a metastable fcc phase were obtained. The lattice parameter of this phase increased with the increment in the Mg content. Pure Ti showed the coexistence of the Ti (fcc) and Ti (hcp) phases. The Ti75Mg25 and Ti50Mg50 compositions revealed a complete phase transformation to the fcc phase, while the Ti25Mg75 composition presented a coexistence of Ti-Mg (fcc) and Mg (hcp) phases. The metastable fcc phase was formed owing to the partial dislocation accumulation caused by the heavy plastic deformation during the ball milling process. (C) 2020 Elsevier B.V. All rights reserved.