Figure 5

TEM images show the morphologies of (a) Mg-3Sn-1Mn-0.6La, (b) Mg-3Sn-1Mn-1.0La and (c) Mg-3Sn-1Mn-1.4La alloys close to grain boundaries. The incideent beam was aligned to [0001] zonal axis of α-Mg matrix. Chemical compositions of regions 7, 8 and 9 by EDS are listed in Table 1.