can you explain why part d has both liquids and solids and t

can you explain why part d has both liquids and solids and the microstructures in details please. Also the alpha and beta phases in a,b,c,d. Than you

Represent the each case on the phase diagram 1600 Liquid 1400 1000 N 800. 0 1 02 03 04 0.5 0.6 0.7 08 0.9 1.0 For the different cases, At 10 mole% Ni 1000°C, the phases present is Liquid and its composition is 100% Liquid The amount of phases present is 10 mole% 90 mole% Al At 50 mole% N 1000 C, the phases present are AlNi, the composition of a-phase is, 43% Ni -57% Al composition of B- phase is 64% Ni-36% Al Calculate the amount of the phases. 0.64 -0.5 0.64 -0.43 Wu 0.667 wt% 0.5-0.4 0.64 -0.43 0.333 wt% At 30 mole% N 600 C, the phases present are Al Ni.the composition of a-phase is, 25% Ni-75% Al, and composition of B-phase is 36% Ni-64% Al Calculate the amount of the phases, 0.36-0.3 4 0.36 -0.25 W. 0.54 wt 0.2 0.36-0.25 0.4 wt At 37 mole% N 600°C, the phases present are Liquid AIN, the composition of L-phase is, 33% Ni-67% Al. and composition of AIN -phase is 42% Ni-58% Al Calculate the amount of the phases. 0.42-0.37 0.42-0.33 6 wt% 0.37 -0.33 0.42 -0.33 0.444 wt% L L phas

Solution

Part (d) purple tieline. The quenched sample comp csays Liquid 33Ni-67Al, Al-Ni 42 Al-58Ni

d) this should be 1300 C, not 600C

This means at 1300 C, there was liquid and solid NiAl present. It was quenched and the compositions given by the intersections of the purple tieline with the phase curves were maintained. The compositions are given by the lever rule, using the nominal comp of 37% Ni as the fulcrum. You need to review the lever rule

Other parts are ok for the stated temp.