(a) Figure 5 shows a phase diagram for the Nb-80 wt% W alloy which is solidified under under the nonequilibrium condition. Evaluate (i) the liquidus temperature (ii) the non-equilibrium solidus temperature (iii) the freezing range

Elements Of Electromagnetics
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Author:Sadiku, Matthew N. O.
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3400
3200
3000
2800
2600
2400
Nb
20
40
60
80
W
Weight percent tungsten
Figure 5: The equilibrium phase diagram for the Nb-W system. The dotted curves
shows nonequilibrium solidus.
Temperature ('C)
Transcribed Image Text:3400 3200 3000 2800 2600 2400 Nb 20 40 60 80 W Weight percent tungsten Figure 5: The equilibrium phase diagram for the Nb-W system. The dotted curves shows nonequilibrium solidus. Temperature ('C)
(a) Figure 5 shows a phase diagram for the Nb-80 wt% W alloy which is solidified under
under the nonequilibrium condition. Evaluate
(i) the liquidus temperature
(ii) the non-equilibrium solidus temperature
(iii) the freezing range
(iv) the composition of the first solid form during solidification
(v) the composition of the last liquid to solidify
(vi) the phase(s) present, the composition of the phase(s) and the amount of the phase(s)
at 3000 °C
(vii) the phase(s) present, the composition of the phase(s) and the amount of the phase(s)
at 2800 °C.
Transcribed Image Text:(a) Figure 5 shows a phase diagram for the Nb-80 wt% W alloy which is solidified under under the nonequilibrium condition. Evaluate (i) the liquidus temperature (ii) the non-equilibrium solidus temperature (iii) the freezing range (iv) the composition of the first solid form during solidification (v) the composition of the last liquid to solidify (vi) the phase(s) present, the composition of the phase(s) and the amount of the phase(s) at 3000 °C (vii) the phase(s) present, the composition of the phase(s) and the amount of the phase(s) at 2800 °C.
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