1. Given the time-temperature transformation diagram, what would be the phases present for a 1.13 wt. % C steel with no alloying elements. calculate the amount of pro eutectoid product, where applicable (at the bottom) A) quenched in cold water to 650 C in 0.1 seconds, then held at 650 C for 5 seconds, then quenched to 400 C, held at 400C for 60 seconds, and finally quenched to room temperatureB. Necessary Steel Phase Diagram Calculations to determine the amount of pro eutectoid product: FuLRE 10.28Isothermal9001600transformation diagramfor a 1.13 wt% Ciron-carbon alloy: A,austenite; B, bainite; C,proeutectoid cementite;M, martensite; P,pearlite. [Adapted fromH. Boyer (Editor),Atlas of IsothermalTransformation andCooling TransformationDiagrams, AmericanSociety for Metals,1977, p. 33.]800A +C14007001200A+P6001000A +B500800B40060050 %300E400M(start)200M(50%)200100_M19Q%L.102103104105106110Time (s)1600Fiquidliquid14001227+ liquid1200I148*2.144.31000y + carbide27 (1340°F)8000.770.02600« + carbideFe,C400100% FeYeight percent carbonTemperature, °CTemperature (*C)Temperature (°F)

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Answered: 1. Given the time-temperature…

Elements Of Electromagnetics

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Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

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1. Given the time-temperature transformation diagram, what would be the phases present for a 1.13 wt. % C steel with no alloying elements. calculate the amount of pro eutectoid product, where applicable (at the bottom)

A) quenched in cold water to 650 C in 0.1 seconds, then held at 650 C for 5 seconds, then quenched to 400 C, held at 400C for 60 seconds, and finally quenched to room temperature

B. Necessary Steel Phase Diagram Calculations to determine the amount of pro eutectoid product:

FuLRE 10.28
Isothermal
900
1600
transformation diagram
for a 1.13 wt% C
iron-carbon alloy: A,
austenite; B, bainite; C,
proeutectoid cementite;
M, martensite; P,
pearlite. [Adapted from
H. Boyer (Editor),
Atlas of Isothermal
Transformation and
Cooling Transformation
Diagrams, American
Society for Metals,
1977, p. 33.]
800
A +C
1400
700
1200
A+P
600
1000
A +B
500
800
B
400
600
50 %
300E
400
M(start)
200
M(50%)
200
100
_M19Q%L.
102
103
104
105
106
1
10
Time (s)
1600
Fiquid
liquid
1400
1227
+ liquid
1200
I148*
2.14
4.3
1000
y + carbide
27 (1340°F)
800
0.77
0.02
600
« + carbide
Fe,C
400
100% Fe
Yeight percent carbon
Temperature, °C
Temperature (*C)
Temperature (°F)

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