What is the proeutectoid phase for an iron-carbon alloy in which the mass fractions of total ferrite and total cementite(Fe3C) are 0.92 and 0.08, respectively?

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
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What is the proeutectoid phase for an iron-carbon alloy in which the mass fractions of total ferrite and total cementite(Fe3C) are 0.92 and 0.08, respectively?

Temperature (°C)
0
1600
1400
1200
1000
600
1538°C
800 -a
400
912°C
0
(Fe)
-1493°C
1394°C
7, Austenite
0.76
0.022
a, Ferrite
1
5
y+L
2
2.14
Composition (at% C)
15
10
1147°C
a + Fe3C
L
3
4
Composition (wt% C)
4.30
7+ Fe3C
727°C
20
Cementite (Fe3C)
5
6
25
2500
2000
1500
-1000
6.70
Temperature (°F)
Transcribed Image Text:Temperature (°C) 0 1600 1400 1200 1000 600 1538°C 800 -a 400 912°C 0 (Fe) -1493°C 1394°C 7, Austenite 0.76 0.022 a, Ferrite 1 5 y+L 2 2.14 Composition (at% C) 15 10 1147°C a + Fe3C L 3 4 Composition (wt% C) 4.30 7+ Fe3C 727°C 20 Cementite (Fe3C) 5 6 25 2500 2000 1500 -1000 6.70 Temperature (°F)
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