5. [Phase Diagram] (1) Here is Cu-Ag phase diagram and two cases (composition and temperature) are given below. At each case, (i) cite the phase(s) present(s), (ii) estimate the phase composition(s), (iii) weight fraction of the phase(s) and (iv) sketch its microstructure for the following alloy. a. 71.9 wt% Ag-28.1 wt% Cu at just above 779 °C b. 71.9 wt% Ag-28.1 wt% Cu at just below 779 °C Temperature (°C) 1200 A 1000 800 600 0 400 a C 200 0 (Cu) B 8.0 (CE) -Solidus Solvus 20 20 a + L Composition (at% Ag) -Liquidus 779°C (TE) 40 40 a + B Liquid 60 Composition (wt% Ag) 60 E 71.9 (CE) 80 80 B+L 91.2 (CBE) G 100 10₂ B H | 2200 2000 1800 F 1600 1400 1200 1000 800 600 400 100 (Ag) Temperature (°F)

5. [Phase Diagram] (1) Here is Cu-Ag phase diagram and two cases (composition and temperature) are given below. At each case, (i) cite the phase(s) present(s), (ii) estimate the phase composition(s), (iii) weight fraction of the phase(s) and (iv) sketch its microstructure for the following alloy. a. 71.9 wt% Ag-28.1 wt% Cu at just above 779 °C b. 71.9 wt% Ag-28.1 wt% Cu at just below 779 °C Temperature (°C) 1200 A 1000 800 600 0 400 a C 200 0 (Cu) B 8.0 (CE) -Solidus Solvus 20 20 a + L Composition (at% Ag) -Liquidus 779°C (TE) 40 40 a + B Liquid 60 Composition (wt% Ag) 60 E 71.9 (CE) 80 80 B+L 91.2 (CBE) G 100 10₂ B H | 2200 2000 1800 F 1600 1400 1200 1000 800 600 400 100 (Ag) Temperature (°F)

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Question

5. [Phase Diagram]
(1) Here is Cu-Ag phase diagram and two cases (composition and temperature) are given below. At each case, (i) cite
the phase(s) present(s), (ii) estimate the phase composition(s), (iii) weight fraction of the phase(s) and (iv) sketch
its microstructure for the following alloy. ()
a. 71.9 wt% Ag-28.1 wt% Cu at just above 779 °C
b. 71.9 wt% Ag-28.1 wt% Cu at just below 779 °℃
Temperature (°C)
1200
A
1000
800
600
400
0
200
0
α
C
(Cu)
B
8.0
(Ca E)
-Solidus
Solvus
20
20
a + L
Composition (at% Ag)
-Liquidus
779°C (TE)
40
40
a + B
Liquid
60
Composition (wt% Ag)
60
E
71.9
(CE)
80
80
B+L
91.2
(CBE)
G
100
B
H
2200
2000
1800
F
1600
1400
1200
1000
800
600
400
100
(Ag)
Temperature (°F)

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