The phase diagram of the alloy Copper - Silver is shown in the figure below. Composition (at% Ag) 1200 20 40 60 80 100 2200 2000 Liquidus 1000 Liquid 1800 -Solidus F a +L 779°C (Tg) 1600 B+L 9 800 B 1400 8.0 (C.) 71.9 91.2 (Cog (C) 1200 600 Solvus 1000 a +B 800 400 600 200 400 100 20 40 60 80 (Cu) Composition (wt% Ag) (Ag) (a) Cite the phases that are present and the phase compositions for the following alloys: 1) 5 wt% Cu-95 wt% Ag at 900 °C 2) 50 wt% Cu - 50 wt% Ag at 1000 °C 3) 30 wt% Cu - 70 wt% Ag at 900 °C 4) 20 wt% Cu - 80 wt% Ag at 600 °C 5) 40 wt% Cu - 60 wt% Ag at 600 °C (b) Determine the eutectic temperature and eutectic composition. (c) What is the maximum solubility of silver in copper and at which temperature? Temperature ("C) Temperature ("F)

The phase diagram of the alloy Copper - Silver is shown in the figure below. Composition (at% Ag) 1200 20 40 60 80 100 2200 2000 Liquidus 1000 Liquid 1800 -Solidus F a +L 779°C (Tg) 1600 B+L 9 800 B 1400 8.0 (C.) 71.9 91.2 (Cog (C) 1200 600 Solvus 1000 a +B 800 400 600 200 400 100 20 40 60 80 (Cu) Composition (wt% Ag) (Ag) (a) Cite the phases that are present and the phase compositions for the following alloys: 1) 5 wt% Cu-95 wt% Ag at 900 °C 2) 50 wt% Cu - 50 wt% Ag at 1000 °C 3) 30 wt% Cu - 70 wt% Ag at 900 °C 4) 20 wt% Cu - 80 wt% Ag at 600 °C 5) 40 wt% Cu - 60 wt% Ag at 600 °C (b) Determine the eutectic temperature and eutectic composition. (c) What is the maximum solubility of silver in copper and at which temperature? Temperature ("C) 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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Concept explainers

Terminology in Metal Alloys

Metal is the pure chemical element you would find on the periodic table. 91 of the 118 elements on the periodic table are metals – which make them some of the most plentiful elements in the world.

Question

The phase diagram of the alloy Copper – Silver is shown in the figure below.
Composition (at% Ag)
20
100
2200
40
60
80
1200
2000
A
-Liquidus
1000
Liquid
1800
-Solidus
F
a +L
779°C (Tg).
1600
B+L
9 800
E
B
G
91.2
(Cog
8.0
71.9
1400
1200
600
1000
Solvus
a +B
800
400
C
600
H
200 0
60
400
100
20
40
80
(Cu)
Composition (wt% Ag)
(Ag)
(a) Cite the phases that are present and the phase compositions for the following alloys:
1) 5 wt% Cu – 95 wt% Ag at 900 °C
2) 50 wt% Cu – 50 wt% Ag at 1000°C
3) 30 wt% Cu – 70 wt% Ag at 900 °C
4) 20 wt% Cu - 80 wt% Ag at 600 °C
5) 40 wt% Cu – 60 wt% Ag at 600 °C
(b) Determine the eutectic temperature and eutectic composition.
(c) What is the maximum solubility of silver in copper and at which temperature?
Temperature ("C)
Temperature ("F)

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