Do the isopletheal analysis by completing the table below for the ternary phase diagram of Al-Si-Mg for composition 20Al-20Mg-60Si. temperature Phase(s) present Composition of the phase* % of each phase 1000 700 *also point out the composition on the phase diagram and mark them (a) Si 60 20 130080 40 (Si) 1200 80 1000 MgSi Mg (Mg) 20 E E 1700 60 1000 40 800 700 20 600 E. 80 600 (AI)