he Iron-Carbon system: Phase Diagram 1. You heat treated a 1045 steel plate by heating it to 900°C and slowly cooling it to 725 °C, which is below the eutectoid temperature. What phases are present at 725°C? What are the compositions of each phase at 725°C? What are the weight fractions of each phase at 725°C? What microconstituents are present at 725°C?
he Iron-Carbon system: Phase Diagram 1. You heat treated a 1045 steel plate by heating it to 900°C and slowly cooling it to 725 °C, which is below the eutectoid temperature. What phases are present at 725°C? What are the compositions of each phase at 725°C? What are the weight fractions of each phase at 725°C? What microconstituents are present at 725°C?
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 Iron-Carbon system: Phase Diagram
1. You heat treated a 1045 steel plate by heating it to 900°C and slowly cooling it to 725 °C, which is below the eutectoid temperature.
What phases are present at 725°C?
What are the compositions of each phase at 725°C?
What are the weight fractions of each phase at 725°C?
What microconstituents are present at 725°C?
What are the compositions of each microconstituent at 725°C?
What are the weight fractions of each microconstituent at 725°C?
Transcribed Image Text:Temperature (°C)
1600
1400
1200
1000
800
600
400
1538°C
(Fe)
8
8 +2
912°C
-1493°C
1394°C
y, Austenite
0.76
0.022
a, Ferrite
1
5
Figure 10.28
© John Wiley & Sons, Inc. All rights reserved.
Y+L
Iron-Carbon phase diagram
2
2.14
Composition (at% C)
15
10
1147°C
a + Fe3C
L
4
3
Composition (wt% C)
4.30
y + Fe3C
727°C
20
Cementite (Fe3C)
5
6
25
2500
2000
1500
1000
6.70
Temperature (°F)
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