a) The figure below shows three equilibrium structures that occur in an iron-carbon alloy, rank these from hardest to softest.b) The microstructure of an iron-carbon alloy consists of proeutectoid ferrite and pearlite. Relative mass to proeutectoid ferrite is 0.2 and pearlite is 0.80. How much carbon does this alloy contain? ProeutectoidFe3CPearliteEutectoid Fe3CFe3CFe3C-Eutectoid aa +Fe3C>PearliteProeutectoid a Temperature (°C)Temperature16001400120010001538°C600800 a84000(Fe)912°C1394°C1493°CY, Austenite0.022 Co0.76Ti U0.022a, Ferrite10.76V5C₁722.14Composition (at% C)15101147°Ca + FezCy+ Fe3C43Composition (wt% C)Xa + Fe3CLComposition (wt% C)4.30Y+Fe3C727°C20Cementite (Fe3C).56.7062525002000150010006.70Temperature (°F)

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Answered: a) The figure below shows three…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

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a) The figure below shows three equilibrium structures that occur in an iron-carbon alloy, rank these from hardest to softest.

b) The microstructure of an iron-carbon alloy consists of proeutectoid ferrite and pearlite. Relative mass to proeutectoid ferrite is 0.2 and pearlite is 0.80. How much carbon does this alloy contain?

Proeutectoid
Fe3C
Pearlite
Eutectoid Fe3C
Fe3C
Fe3C-
Eutectoid a
a +
Fe3C
>Pearlite
Proeutectoid a

Temperature (°C)
Temperature
1600
1400
1200
1000
1538°C
600
800 a
8
400
0
(Fe)
912°C
1394°C
1493°C
Y, Austenite
0.022 Co
0.76
Ti U
0.022
a, Ferrite
1
0.76
V
5
C₁
7
2
2.14
Composition (at% C)
15
10
1147°C
a + FezC
y+ Fe3C
4
3
Composition (wt% C)
X
a + Fe3C
L
Composition (wt% C)
4.30
Y+Fe3C
727°C
20
Cementite (Fe3C).
5
6.70
6
25
2500
2000
1500
1000
6.70
Temperature (°F)

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