Temperature (°C) Question 6 1600 1538°C 1400 1394°C 1493°C 10 Composition (at% C) 1200 1147°C y. Austenite 2.14 1000 912°C 800 0.76 600 0.022 a, Ferrite + FezC 400 Ο (Fe) 15 20 25 4.30 y+FeyC 727°C 2500 2000 1500 Cementite (FeyC) 1000 4 5 6 6.70 Composition (wt% C) Temperature (°F) Figure 9.24 The iron-iron carbide phase diagram. [Adapted from Binary Alloy Phase Diagrams, Vol. 1, 2nd edition, T. B. Massalski (Editor-in-Chief), 1990. Reprinted by permission of ASM International, Materials Park, OH.] (From Callister & Rethwisch) The technologically important part of the iron-carbon phase diagram is shown above. Using this diagram, answer the following questions: (a) For a 1.10 wt% plain carbon steel that has been austenitized at 1100°C and then cooled under equilibrium conditions to room temperature, what is the proeutectoid (or primary) phase that forms? Also, for this steel, determine: (i) the wt% of pearlite and the wt% of the proeutectoid phase in the microstructure at room temperature, and (ii) the total amount (wt%) of ferrite in the microstructure at room temperature. (b) For an Fe - 3 wt% C alloy in equilibrium at 1000°C, what are the equilibrium phases. Also, for this alloy at 1000°C, determine (i) the composition of the equilibrium phases, and (ii) the wt% of each phase. (c) Explain why steel microstructures such as bainite and martensite are not shown on the diagram.
Temperature (°C) Question 6 1600 1538°C 1400 1394°C 1493°C 10 Composition (at% C) 1200 1147°C y. Austenite 2.14 1000 912°C 800 0.76 600 0.022 a, Ferrite + FezC 400 Ο (Fe) 15 20 25 4.30 y+FeyC 727°C 2500 2000 1500 Cementite (FeyC) 1000 4 5 6 6.70 Composition (wt% C) Temperature (°F) Figure 9.24 The iron-iron carbide phase diagram. [Adapted from Binary Alloy Phase Diagrams, Vol. 1, 2nd edition, T. B. Massalski (Editor-in-Chief), 1990. Reprinted by permission of ASM International, Materials Park, OH.] (From Callister & Rethwisch) The technologically important part of the iron-carbon phase diagram is shown above. Using this diagram, answer the following questions: (a) For a 1.10 wt% plain carbon steel that has been austenitized at 1100°C and then cooled under equilibrium conditions to room temperature, what is the proeutectoid (or primary) phase that forms? Also, for this steel, determine: (i) the wt% of pearlite and the wt% of the proeutectoid phase in the microstructure at room temperature, and (ii) the total amount (wt%) of ferrite in the microstructure at room temperature. (b) For an Fe - 3 wt% C alloy in equilibrium at 1000°C, what are the equilibrium phases. Also, for this alloy at 1000°C, determine (i) the composition of the equilibrium phases, and (ii) the wt% of each phase. (c) Explain why steel microstructures such as bainite and martensite are not shown on the diagram.
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
Related questions
Question
Only part c
![Temperature (°C)
Question 6
1600
1538°C
1400
1394°C
1493°C
10
Composition (at% C)
1200
1147°C
y. Austenite
2.14
1000
912°C
800
0.76
600
0.022
a, Ferrite
+ FezC
400
Ο
(Fe)
15
20
25
4.30
y+FeyC
727°C
2500
2000
1500
Cementite (FeyC)
1000
4
5
6
6.70
Composition (wt% C)
Temperature (°F)
Figure 9.24 The iron-iron carbide phase diagram.
[Adapted from Binary Alloy Phase Diagrams, Vol. 1, 2nd edition, T. B. Massalski (Editor-in-Chief), 1990. Reprinted by permission
of ASM International, Materials Park, OH.]
(From Callister & Rethwisch)
The technologically important part of the iron-carbon phase diagram is shown above. Using this
diagram, answer the following questions:
(a) For a 1.10 wt% plain carbon steel that has been austenitized at 1100°C and then cooled
under equilibrium conditions to room temperature, what is the proeutectoid (or
primary) phase that forms? Also, for this steel, determine: (i) the wt% of pearlite and the
wt% of the proeutectoid phase in the microstructure at room temperature, and (ii) the
total amount (wt%) of ferrite in the microstructure at room temperature.
(b) For an Fe - 3 wt% C alloy in equilibrium at 1000°C, what are the equilibrium phases.
Also, for this alloy at 1000°C, determine (i) the composition of the equilibrium phases,
and (ii) the wt% of each phase.
(c) Explain why steel microstructures such as bainite and martensite are not shown on the
diagram.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd30ea730-ba6b-4d49-90df-80ffc6e77ea4%2F18ef4143-262c-48bc-8acc-c878ecce8b33%2F88rhqe_processed.png&w=3840&q=75)
Transcribed Image Text:Temperature (°C)
Question 6
1600
1538°C
1400
1394°C
1493°C
10
Composition (at% C)
1200
1147°C
y. Austenite
2.14
1000
912°C
800
0.76
600
0.022
a, Ferrite
+ FezC
400
Ο
(Fe)
15
20
25
4.30
y+FeyC
727°C
2500
2000
1500
Cementite (FeyC)
1000
4
5
6
6.70
Composition (wt% C)
Temperature (°F)
Figure 9.24 The iron-iron carbide phase diagram.
[Adapted from Binary Alloy Phase Diagrams, Vol. 1, 2nd edition, T. B. Massalski (Editor-in-Chief), 1990. Reprinted by permission
of ASM International, Materials Park, OH.]
(From Callister & Rethwisch)
The technologically important part of the iron-carbon phase diagram is shown above. Using this
diagram, answer the following questions:
(a) For a 1.10 wt% plain carbon steel that has been austenitized at 1100°C and then cooled
under equilibrium conditions to room temperature, what is the proeutectoid (or
primary) phase that forms? Also, for this steel, determine: (i) the wt% of pearlite and the
wt% of the proeutectoid phase in the microstructure at room temperature, and (ii) the
total amount (wt%) of ferrite in the microstructure at room temperature.
(b) For an Fe - 3 wt% C alloy in equilibrium at 1000°C, what are the equilibrium phases.
Also, for this alloy at 1000°C, determine (i) the composition of the equilibrium phases,
and (ii) the wt% of each phase.
(c) Explain why steel microstructures such as bainite and martensite are not shown on the
diagram.
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