The detailed analysis of the microstructure of the obtained AZ31-xLi (x = 4, 8, 12) alloys is presented in our previous contribution and is briefly discussed here. Surface SEM images (Fig One of the possible ways to distinguish between types of IMPs in the microstructure of metal alloys and predict their local micro-galvanic and, consequently, corrosion activity is to use scanning probe techniques . This approach can be also useful to distinguish between α-Mg and β-Li phases in the examined alloys. In the present contribution we utilized a two-pass SKPFM technique and the resulting topography and contact Volta potential difference maps and profiles are shown in Fig. . The topography maps (Fig. ) showed the presence of some polishing lines on the surface, which, however, did not affect the results of the Volta potential mapping (Fig. ). At the same time, due to the high reactivity, the surface of as-polished alloys is rapidly oxidized in contact with ambient air, forming some small surface precipitates, clearly seen in the topography maps. Several larger surface precipitates (up to several µm) were protruded from the surface by up to hundreds of nanometers (Fig. ). These areas mostly originate from the different hardness and polishing rates of IMPs constituents (mainly Al and Mn) and the matrix elements .