Question 3 A 10g ball bearing sphere is made of a steel containing 2.0 wt% C. Suppose the ball is austenitized and slowly cooled to 1200°C, then to 600°C. Refer Figure 1. a) i) What is the weight of austenite present? ii) What is the weight of liquid present? ii) What is the total weight of ferrite present? iv) What is the total weight of cementite present? Composition (at C) 10 15 20 25 1600 1538 C -1493C 1400 2500 1394°C 1200 1147°C 2.14 4.30 Y. Austenite 2000 1000 912'C + FeyG B00 1500 727°C 0.76 '0.022 600 a, Ferrite a+ Fegc Cementite (Fey) 1000 400 4 5 6.70 (Fe) Composition (wi% C) Temperature F)
Question 3 A 10g ball bearing sphere is made of a steel containing 2.0 wt% C. Suppose the ball is austenitized and slowly cooled to 1200°C, then to 600°C. Refer Figure 1. a) i) What is the weight of austenite present? ii) What is the weight of liquid present? ii) What is the total weight of ferrite present? iv) What is the total weight of cementite present? Composition (at C) 10 15 20 25 1600 1538 C -1493C 1400 2500 1394°C 1200 1147°C 2.14 4.30 Y. Austenite 2000 1000 912'C + FeyG B00 1500 727°C 0.76 '0.022 600 a, Ferrite a+ Fegc Cementite (Fey) 1000 400 4 5 6.70 (Fe) Composition (wi% C) Temperature F)
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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Transcribed Image Text:Question 3
a)
A 10g ball bearing sphere is made of a steel containing 2.0 wt% C. Suppose
the ball is austenitized and slowly cooled to 1200°C, then to 600°C. Refer
Figure 1.
i) What is the weight of austenite present?
i) What is the weight of liquid present?
i) What is the total weight of ferrite present?
iv) What is the total weight of cementite present?
Composition (at% C)
16000
1538°C
10
20
-1493°C
L.
1400
2500
1394°C
7+4
1200
1147°C
2.14
4.30
Y, Austenite
2000
1000-
912°C
+ Feyc
B00 H
1500
727°C
0.76
0.022
600 H
a, Ferrite
a+ FegC
Cementite (Feg)
1000
400
3
4
6.
6.70
(Fe)
Composition (wt% C)
Figure 1: Fe-C phase diagram
Temperature ("C)
(4) ainguaduaj
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