Temperature Temperature C y Austenite a Ferrite 8=Delta iron CM Cementite Зо00 8+L 2802 2в00 2720 = 1539 1492 L 2600 8+ Y CM begins 2552 Primary to solidifty austenite begins to solidity 400 2400 Austenite in Y liquid 2200 L+FeyC 2066° F 2066 2000 Austenite solid solution of carbon in gamma iron и3о FeC Austentite ledeburite and cementite 1800 Magnetic (414 F) 1/point A Асм 670 1600 910 YFeC Az A Cementite and ledeburite Austenite to pearlite 760 1333F 400 1333 A,2,3 723 A 1200 Pearlite and Cementite Cementite, pearlite and transformed 0.025 Pearlite and ferrite a Fe-C ledeburite 000 Magnetic change of FeC Ao 410 210 o.008% 4.3 6,67 0.50 0.83% 1% 3% . 2% 4% 5% 6% 65% Hyper-eutectoid- Hypo-eutectoid- Steel Cast Iron

Question

A 609 g eutectoid steel ( about 0.8%C) is heated to 1,002 C and cooled slowly through the eutectorid temperature. This results in the formation of  cementite Fe3C (6.67%C) and ferrite (0.025%C). Calculate the number of grams of cementite that form in the steel.

Temperature
Temperature
C
y Austenite
a Ferrite
8=Delta iron
CM Cementite
Зо00
8+L
2802
2в00
2720
=
1539
1492
L
2600
8+ Y
CM begins
2552
Primary to solidifty
austenite
begins to
solidity
400
2400
Austenite in
Y
liquid
2200
L+FeyC
2066° F
2066
2000
Austenite solid solution
of carbon in gamma iron
и3о
FeC
Austentite
ledeburite
and
cementite
1800
Magnetic (414 F)
1/point A
Асм
670
1600
910
YFeC
Az A
Cementite
and
ledeburite
Austenite
to pearlite
760
1333F
400
1333
A,2,3
723
A
1200
Pearlite and Cementite
Cementite, pearlite
and transformed
0.025
Pearlite
and
ferrite
a Fe-C ledeburite
000
Magnetic change of FeC
Ao
410
210
o.008%
4.3
6,67
0.50
0.83% 1%
3% .
2%
4%
5%
6% 65%
Hyper-eutectoid-
Hypo-eutectoid-
Steel
Cast Iron

Image Transcription

Temperature Temperature C y Austenite a Ferrite 8=Delta iron CM Cementite Зо00 8+L 2802 2в00 2720 = 1539 1492 L 2600 8+ Y CM begins 2552 Primary to solidifty austenite begins to solidity 400 2400 Austenite in Y liquid 2200 L+FeyC 2066° F 2066 2000 Austenite solid solution of carbon in gamma iron и3о FeC Austentite ledeburite and cementite 1800 Magnetic (414 F) 1/point A Асм 670 1600 910 YFeC Az A Cementite and ledeburite Austenite to pearlite 760 1333F 400 1333 A,2,3 723 A 1200 Pearlite and Cementite Cementite, pearlite and transformed 0.025 Pearlite and ferrite a Fe-C ledeburite 000 Magnetic change of FeC Ao 410 210 o.008% 4.3 6,67 0.50 0.83% 1% 3% . 2% 4% 5% 6% 65% Hyper-eutectoid- Hypo-eutectoid- Steel Cast Iron

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