(a) Use Cu-Ag phase diagram in below figure to answer these questions and attach the figure Q05 to the answer book. (b) (c) Label the phases in areas 1 - 6 and reaction occurs at point E. Consider an alloy content Cu - 60 wt% and Ag - 40 wt% i. Make a phase analysis when cooling 1000°℃ to 700°C. ii. Name and determine the phase compositions present at the temperatures 850°C and 700°C.

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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Question 05
(a)
Use Cu-Ag phase diagram in below figure to answer these questions and attach the figure Q05
to the answer book.
(b)
(c)
Label the phases in areas 1 - 6 and reaction occurs at point E.
Consider an alloy content Cu - 60 wt% and Ag - 40 wt%
i. Make a phase analysis when cooling 1000°C to 700°C.
ii. Name and determine the phase compositions present at the temperatures 850°C and
700°C.
Temperature (°C)
1200
1000
800 3
600
400
2000
C
(Cu)
8.0
(g)
20
2
20
Composition (at% Ag)
779°C (T
40
40
60
71.9
1CB²
60
Composition (wt% Ag)
Figure Q 05 Copper- Silver phase diagram
END
80
80
91.2
C
100
85
1
E
H
2200
2000
1800
F
1600
400
1200
1000
800
100
(A)
600
400
Temperature (°F)
Transcribed Image Text:Question 05 (a) Use Cu-Ag phase diagram in below figure to answer these questions and attach the figure Q05 to the answer book. (b) (c) Label the phases in areas 1 - 6 and reaction occurs at point E. Consider an alloy content Cu - 60 wt% and Ag - 40 wt% i. Make a phase analysis when cooling 1000°C to 700°C. ii. Name and determine the phase compositions present at the temperatures 850°C and 700°C. Temperature (°C) 1200 1000 800 3 600 400 2000 C (Cu) 8.0 (g) 20 2 20 Composition (at% Ag) 779°C (T 40 40 60 71.9 1CB² 60 Composition (wt% Ag) Figure Q 05 Copper- Silver phase diagram END 80 80 91.2 C 100 85 1 E H 2200 2000 1800 F 1600 400 1200 1000 800 100 (A) 600 400 Temperature (°F)
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