Temperature (°C)16001500140013001200110010001085°C(Cu)202040LiquidLiquidus lineB+L60a4060Composition (wt% Ni)801453°CSolidus line8010028002600240022002000100(Ni)Temperature (°F) Refer to the phase diagram below.A copper-nickel alloy of composition 70 wt% Ni-30 wt% Cu is slowly heated froma temperature of 1300°C.(a) At what temperature does the first liquid phase form?(b) What is the composition of this liquid phase?(c) At what temperature does complete melting of the alloy occur?(d) What is the composition of the last solid remaining prior to complete melting?

Answered: Image /qna-images/answer/2f6b6e86-b6bc-4f64-b6cd-81a7d93135f2.jpg

Answered: 1600 1500 1400 1300 1200 1100 1000…

1600 1500 1400 1300 1200 1100 1000 1085°C (Cu) 20 20 40 60 Liquid Liquidus line В. 40 60 Composition (wt% Ni) 80 1453°C Solidus line 80 100 2800 2600 2400 2200 2000 100 (Ni)

Principles of Modern Chemistry

8th Edition

ISBN:9781305079113

Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Chapter22: Inorganic Materials

Section: Chapter Questions

Problem 7P

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Question

Temperature (°C)
1600
1500
1400
1300
1200
1100
1000
1085°C
(Cu)
20
20
40
Liquid
Liquidus line
B
+L
60
a
40
60
Composition (wt% Ni)
80
1453°C
Solidus line
80
100
2800
2600
2400
2200
2000
100
(Ni)
Temperature (°F)

Refer to the phase diagram below.
A copper-nickel alloy of composition 70 wt% Ni-30 wt% Cu is slowly heated from
a temperature of 1300°C.
(a) At what temperature does the first liquid phase form?
(b) What is the composition of this liquid phase?
(c) At what temperature does complete melting of the alloy occur?
(d) What is the composition of the last solid remaining prior to complete melting?

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