The present work deals with the synthesis and analysis of Ti(100-x)Mgx (x = 0, 25, 50, 75 and 100 at%) alloys obtained by Ball Milling (BM) and High Pressure Torsion (HPT). These processing techniques have been used in this research because to the low solubility (less than 2% Fig. 1) and a big difference in their melting points (Ti1668°C, Mg650°C). It was found that pure Ti and rich Ti(75,50)Mg(25,50) alloys transforms to a metastable fcc phase when stearic acid (SA) is added as a Process control agent (PCA). It was also found that Mg accelerates this phase transformation. Moreover, combining BM and HPT the formation of the fcc phase could be obtained in less time. By using NaCl as a PCA a different hcp phase could be obtained. Therefore, the resulting phase of Ti-Mg alloys will be dependent according to the synthesis method as well as the nature of PCA and its concentration.