The following questions are based on a high carbon steel with a composition of 1,5% C and 98,5% Fe. Please refer to the Fe-Fe3C binary phase diagram in Callister and Rethwhich 1) a Name the phases present and calculate the amounts of these phases just above the eutectoid temperature b, Give the amount of austenite present at 1100°C. c. Give the amount of pro-eutectoid ferrite just above the eutectoid temperature. d. With equilibrium cooling just below the eutectoid temperature calculate the total ferrite. e. Why must the samples be quenched rapidly to obtain high hardness
The following questions are based on a high carbon steel with a composition of 1,5% C and 98,5% Fe. Please refer to the Fe-Fe3C binary phase diagram in Callister and Rethwhich 1) a Name the phases present and calculate the amounts of these phases just above the eutectoid temperature b, Give the amount of austenite present at 1100°C. c. Give the amount of pro-eutectoid ferrite just above the eutectoid temperature. d. With equilibrium cooling just below the eutectoid temperature calculate the total ferrite. e. Why must the samples be quenched rapidly to obtain high hardness
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
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| The following questions are based on a high carbon steel with a composition of 1,5% C and 98,5% Fe. |
| Please refer to the Fe-Fe3C binary phase diagram in Callister and Rethwhich |
1) a
| Name the phases present and calculate the amounts of these phases just above the eutectoid temperature |
b, Give the amount of austenite present at 1100°C.
c. Give the amount of pro-eutectoid ferrite just above the eutectoid temperature.
d. With equilibrium cooling just below the eutectoid temperature calculate the total ferrite.
e. Why must the samples be quenched rapidly to obtain high hardness?
Transcribed Image Text:4.3. INTRODUCTION
1600
1538°C
1493°C
L
1400
2500
1394°C
y+L
1200
1147°C
2.14
4.30
Y, Austenite
2000
1000
912°C
y+ FesC
800
1500
727°C
0.76
0.022
600
a, Ferrite
a + FezC
Cementite (Fe;C)
- 1000
4
5
6.70
Composition (wt% C)
Figure 4.1: Fe-C Binary Phase Diagram
Temperature ("C)
Temperature (*F)
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