Figure 3

SEM observations show the morphologies of (a) Mg-3Sn-1Mn-0.2La, (b) Mg-3Sn-1Mn-0.6La and (c) Mg-3Sn-1Mn-1.4La alloys. Chemical compositions of regions 1, 2 and 3 detected by EDS and listed in Table 1.

SEM observations show the morphologies of (a) Mg-3Sn-1Mn-0.2La, (b) Mg-3Sn-1Mn-0.6La and (c) Mg-3Sn-1Mn-1.4La alloys. Chemical compositions of regions 1, 2 and 3 detected by EDS and listed in Table 1.