Given a Cu-Ag alloy with a bulk composition of 30wt% Ag, answer the following: a. At what temperature does the first solid start to form? units: units: units: b. What is the elemental composition of this solid phase when it first appears? c. At what temperature does the material become fully solid? d. What is the elemental composition of the very last portion of liquid that is present just before the system fully transforms to solid? Temperature (°C) 1200 1000 800 A α B 8.0 (CE) units: Composition (at% Ag) 20 40 60 80 100 2200 -Liquidus Liquid 2000 -Solidus a +L 1800 F 1600 779°C (TE) B+L E G 71.9 91.2 1400 β (CE) (CBE) 600 Solvus α + β 400 C 200 0 20 40 (Cu) 1200 1000 800 600 H 400 60 80 100 (Ag) Composition (wt% Ag) Temperature (°F)
Given a Cu-Ag alloy with a bulk composition of 30wt% Ag, answer the following: a. At what temperature does the first solid start to form? units: units: units: b. What is the elemental composition of this solid phase when it first appears? c. At what temperature does the material become fully solid? d. What is the elemental composition of the very last portion of liquid that is present just before the system fully transforms to solid? Temperature (°C) 1200 1000 800 A α B 8.0 (CE) units: Composition (at% Ag) 20 40 60 80 100 2200 -Liquidus Liquid 2000 -Solidus a +L 1800 F 1600 779°C (TE) B+L E G 71.9 91.2 1400 β (CE) (CBE) 600 Solvus α + β 400 C 200 0 20 40 (Cu) 1200 1000 800 600 H 400 60 80 100 (Ag) Composition (wt% Ag) Temperature (°F)
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:Given a Cu-Ag alloy with a bulk composition of 30wt% Ag, answer the following:
a. At what temperature does the first solid start to form?
units:
units:
units:
b. What is the elemental composition of this solid phase when it first appears?
c. At what temperature does the material become fully solid?
d. What is the elemental composition of the very last portion of liquid that is present just before the
system fully transforms to solid?
Temperature (°C)
1200
1000
800
A
α
B
8.0
(CE)
units:
Composition (at% Ag)
20
40
60
80
100
2200
-Liquidus
Liquid
2000
-Solidus
a +L
1800
F
1600
779°C (TE)
B+L
E
G
71.9
91.2
1400
β
(CE)
(CBE)
600
Solvus
α + β
400
C
200
0
20
40
(Cu)
1200
1000
800
600
H
400
60
80
100
(Ag)
Composition (wt% Ag)
Temperature (°F)
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