Answered: fill in the blanks The eutectic…

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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fill in the blanks

The eutectic point is the lowest melting point which can be seen on the iron-carbon equilibrium phase diagram at ___________ percent carbon.

The eutectoid point means the lowest transformation temperature in a solidified alloy. On the iron-carbon equilibrium phase diagram the eutectoid point is at _________percent carbon.

true or false

What happens to a quench-hardened tool or machine part that was not tempered when it is subjected to shock loads or bending stress? It is not supposed to be tempered because once it is tempered, it will be brittle.

True

False

Iron-Carbon Phase Diagram
Binary phase diagram for iron-carbon system, up to about 5% carbon
1,600
1,538 A
B
ferrite
H
(delta-
iron)
liquid
N 1,394
1,300
D
1,200
C
E
1,148
austenite
F
1,100
(gamma-iron)
2.11
4.3
1,000
G 912
900
austenite
and
S
727
ferrite
K
pearlite
and
ferrite
ferrite
pearlite and carbide
(alpha-
iron)
0.5 0.77
1.5
2
2.5
3.5
4
4.5
5
Steels
carbon content (8)
©1994 Encyclopaedia Britannica,
Cast Irons
temperature (°C)

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