Describe the final microstructure obtained in a 1050 steel after heat at 8200C, cooled to 700oC and hold for 5 s, cooled to room temperature. 900H 800 A3 700 A, F, Pr a+ pearlite 9 600 23 y+ a+ pearlite 500- 30 Bf y+ bainite 400F B, Bainite 39 F=Ferrite M, 300 Y+ martensite 49 P=Pearlite 200 B=Bainite Martensite M=Martensite 100- 62 0.1 1 10 102 10 10 10 10 Time (s) TTT curve for carbon steel AISI 1050 Temperature (°C) Rockwell C hardness

Elements Of Electromagnetics
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Describe the final microstructure obtained in a 1050 steel after heat at 8200C, cooled to 7000C and hold for 5 s,
cooled to room temperature.
900-
a+y
800 A,
700
A1
F,
Pr
a+ pearlite
23
600
-y+a+pearlite
30
500
B1
y+ bainite
Bainite
39
F=Ferrite
B,
M,
400
49
P=Pearlite
300
Y+ martensite
B=Bainite
200
Martensite
M=Martensite
62
100-
102
10
10
10
10
0.1
1
10
Time (s)
TTT curve for carbon steel AISI 1050
Temperature (°C)
Rockwell C hardness
Transcribed Image Text:Describe the final microstructure obtained in a 1050 steel after heat at 8200C, cooled to 7000C and hold for 5 s, cooled to room temperature. 900- a+y 800 A, 700 A1 F, Pr a+ pearlite 23 600 -y+a+pearlite 30 500 B1 y+ bainite Bainite 39 F=Ferrite B, M, 400 49 P=Pearlite 300 Y+ martensite B=Bainite 200 Martensite M=Martensite 62 100- 102 10 10 10 10 0.1 1 10 Time (s) TTT curve for carbon steel AISI 1050 Temperature (°C) Rockwell C hardness
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