A Cu-Ni alloy must be fully liquid at 1350°C for processing. However, when placed in service the alloy must be solid at 1200°C. The phase diagram for the Cu-Ni binary system given below in Figure 3b. (i) Determine the composition range in which the alloy must lie. (ii) To obtain the maximum yield strength what composition should be used? (iii) If, however, the highest elongation is required then what composition should be used?
A Cu-Ni alloy must be fully liquid at 1350°C for processing. However, when placed in service the alloy must be solid at 1200°C. The phase diagram for the Cu-Ni binary system given below in Figure 3b. (i) Determine the composition range in which the alloy must lie. (ii) To obtain the maximum yield strength what composition should be used? (iii) If, however, the highest elongation is required then what composition should be used?
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
A Cu-Ni alloy must be fully liquid at 1350°C for processing. However,
when placed in service the alloy must be solid at 1200°C. The phase
diagram for the Cu-Ni binary system given below in Figure 3b.
(i) Determine the composition range in which the alloy must lie.
(ii) To obtain the maximum yield strength what composition should
be used?
(iii) If, however, the highest elongation is required then what
composition should be used?
![Temperature (°C)
Strength MPa
1500
1400
1300
1200
1100
1000
0
551
Cu
413
275
138
L
Tensile strength
Cu
α
Ni strengthens Cu
a + L
Yield strength
% Elongation
Cu strengthens Ni
Ni
20 40 60 80
Weight percent nickel
80
60
40
20
Ni
% Elongation
Figure 3b. Cu-Ni phase diagram with corresponding property curves.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F50932632-4169-47b2-9f4d-ca049ece65f3%2F67b3383b-cb49-4fcf-a0bd-c3c67c56c675%2F4mbcdbd_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Temperature (°C)
Strength MPa
1500
1400
1300
1200
1100
1000
0
551
Cu
413
275
138
L
Tensile strength
Cu
α
Ni strengthens Cu
a + L
Yield strength
% Elongation
Cu strengthens Ni
Ni
20 40 60 80
Weight percent nickel
80
60
40
20
Ni
% Elongation
Figure 3b. Cu-Ni phase diagram with corresponding property curves.
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