1. A Cu-Ni alloy of composition 70 wt% Ni - 30 wt% Cu is slowly heated from a temperature of 1300°C. (1) At what temperature does the first liquid phase form? What is the composition of this liquid phase? (2) At what temperature does complete melting of the alloy occur? Composition (at% Ni) 40 60 1600 1500 1400 1300 1200 1100 1000 1085°C 0 (Cu) 20 20 Liquid 1345 C Liquidus line First liquid (59 wt% Ni) a+L Solidus line 40 60 Composition (wt% Ni) 80 1453°C 80 Last solid (79 1% Ni) 100 -1380°C 2800 2600 2400 2200 2000 Temperature (°F) 100 APL (Ni)
1. A Cu-Ni alloy of composition 70 wt% Ni - 30 wt% Cu is slowly heated from a temperature of 1300°C. (1) At what temperature does the first liquid phase form? What is the composition of this liquid phase? (2) At what temperature does complete melting of the alloy occur? Composition (at% Ni) 40 60 1600 1500 1400 1300 1200 1100 1000 1085°C 0 (Cu) 20 20 Liquid 1345 C Liquidus line First liquid (59 wt% Ni) a+L Solidus line 40 60 Composition (wt% Ni) 80 1453°C 80 Last solid (79 1% Ni) 100 -1380°C 2800 2600 2400 2200 2000 Temperature (°F) 100 APL (Ni)
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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Transcribed Image Text:1. A Cu-Ni alloy of composition 70 wt% Ni - 30 wt% Cu is slowly heated from a
temperature of 1300°C.
(1) At what temperature does the first liquid phase form? What is the composition of
this liquid phase?
(2) At what temperature does complete melting of the alloy occur?
Composition (at% Ni)
40
0
16007
30 1500
Temperature (°C)
1400
1300
1200
13h00 1100
e 1000
T
1085°C
0
ko (Cu)
1
20
20
Liquid
1345 C
Liquidus line
40
60
First liquid
(59 wt% Ni)
a +L
Solidus line
60
Composition (wt% Ni)
(a)
80
T
80
1453°C
Last solid
(79 wt% Ni)
100
1380°C
2800
2600
2400
2200
2000
Temperature (°F)
100 TATRA
(Ni)
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