Question: K - L system Component K melts at 1 2 7 0 deg C , and Component L melts at 9 8 0

K-L system
Component K melts at 1270\deg C, and Component L melts at 980\deg C.
There are two intermediate compounds: K3L (17% L) and KL (48% L).
Both K3L and KL melt incongruently at 1010\deg C and 870\deg C, respectively.
Eutectic e1 involves coexistence of KL-L-Liquid (80% L) at 680\deg C.
Peritectic p1 involves coexistence of K-K3L-Liquid (37% L) at 1010\deg C.
Peritectic p2 involves coexistence of K3L-KL-Liquid (60% L) at 870\deg C.
K-M system
Component K melts at 1270\deg C, and Component M melts at 1310\deg C.
There is one intermediate compound: KM (51% M). KM melts congruently at 1480\deg C.
Eutectic e2 involves coexistence of K-KM-Liquid (30% M) at 1010\deg C
Eutectic e3 involves coexistence of KM-M-Liquid (80% M) at 1170\deg C
L-M system
Component L melts at 980\deg C, and Component M melts at 1310\deg C.
There are two intermediate compounds: L3M2(40% M) and LM (60% M).
L3M2 melts incongruently at 870\deg C whereas LM melts congruently at 1280\deg C.
Eutectic e4 involves coexistence of L-L3M2-Liquid (18% M) at 780\deg C.
Eutectic e5 involves coexistence of LM-M-Liquid (80% M) at 1070\deg C.
Peritectic p3 involves coexistence of L3M2-LM-Liquid (30% M) at 870\deg C.
K-L-M system
Use the liquidus data in K-L, K-M and L-M diagrams. Plot the liquidus projection of K-L-M.
Ternary Invariant Point I1 involves coexistence of KM-LM-M-Liq. (10% K,20% L,70% M) at 960\deg C
Ternary Invariant Point I2 involves coexistence of K-K3L-KM-Liq. (55% K,25% L,20% M) at 880\deg C
Ternary Invariant Point I3 involves coexistence of K3L-KM-LM-Liq. (30% K,35% L,35% M) at 750\deg C
Ternary Invariant Point I4 involves coexistence of KL-K3L-LM-Liq. (25% K,50% L,25% M) at 680\deg C
Ternary Invariant Point I5 involves coexistence of KL-LM-L3M2-Liq. (15% K,65% L,20% M) at 620\deg C
Ternary Invariant Point I6 involves coexistence of KL-L3M2-L-Liq. (15% K,75% L,10% M) at 530\deg C
a) Draw the binary diagrams of K-L, K-M and L-M systems. Label the all the fields in the diagrams.
b) Draw the ternary diagram of K-L-M system. Label the all the primary fields of crystallization in the diagram.
c) Draw the Alkemades lines and form the crystallization triangles in K-L-M system.
d) Identify the ternary invariant points in K-L-M system.
e) Find and locate the composition 65% K 25% L, and 10% M.
f) Clarify the composition triangle according to the composition that assigned to you go through final
solidification.
g) Indicate the path of solidification by mentioning the phases that precipitate along the path and show the
invariant point where the reactions of final solidification (the invariant reaction) for your composition.
h) Calculate the weight percentage and indicate the composition of the phases that exist at Tp
+
(Above the invariant point temp. ) and Tp
(Below the invariant point temp. ) and indicate the amount of
liquid phase for your composition.
i) Draw the projected Isotherms in K-L-M system.
j) Draw the isothermal sections for 1200,1000,800 and 600\deg C.

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