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At the given carbon content of 1.4 wt% at 600 degrees celcius,
point “M”, what is...
3. For hypo-eutectoid steel (say, carbon content equal to 0 .40 wt%)
3. For hypo-eutectoid steel (say, carbon content equal to 0 .40 wt%), if cool from austenite to below eutectoid temperature, calculate the relative amount of pro-eutectoid ferrite and Pearlite. What is the carbon content of the Pearlite microconstituent? What is the carbon content of the pro-eutectoid constituent? Calculate the relative amount of a and Fe3C phase in the perlite constituent. 4. For hyper-eutectoid steel (say, carbon content equal to 1.2 wt%), if cool from austenite to below eutectoid temperature, calculate the...
(12 Question 4: points: 4 pts each) Consider 3.0 kg of austenite containing 1.6 wt% C...
(12 Question 4: points: 4 pts each) Consider 3.0 kg of austenite containing 1.6 wt% C at 1100 °C, cooled to below 726 °C. (a) What is the proeutectoid phase? (b) How many kilograms of total ferrite and cementite form? (c) How many kilograms each of pearlite and the proeutectoid cementite form? Composition (at% C) 10 15 5 20 25 0 1600 1538°C 1493°C L 1400 S 1394°C 7+L 1200 1147°C 2.14 4.30 y, Austenite Temperature (°C) 1000 912°C y...
Consider the Fe-Fe3C phase diagram and answer the following questions: 21. At a temperature just below...
Consider the Fe-Fe3C phase diagram and answer the following questions: 21. At a temperature just below the eutectic (1147°C) for a sample with 4 wt% C please calculate the mass fraction of (a) primary Y (austenite), (b) eutectic y (austenite), and for a sample with 5 wt% C please calculate the mass fraction of (c) primary Fe,c (cementite), (d) eutectic Fe C (cementite). (8%) 22. At a temperature just up the eutectic (1147°C), at first for a sample with 4...
The microstructure of an iron-carbon alloy consists of proeutectoid cementite and pearlite; the mass fractions of...
The microstructure of an iron-carbon alloy consists of proeutectoid cementite and pearlite; the mass fractions of these microconstituents are 0.12 and 0.88, respectively. Determine the concentration of carbon in this alloy. The iron-iron carbide phase diagram is shown in the Animated Figure 9.24. wt%C Composition = 0 wt% C Composition = 0 at% C Temperature = 400 °C Temperature = 752 F 2025 Composition (at% C) 10 15 160025 1600 97538 9493 °C 1400 1400 2500 | 1394 °C y+L...
When the steel containing 3.0wt% carbon is quenched very quickly (over 5000°C /s) from 1000 °C to...
When the steel containing 3.0wt% carbon is quenched very quickly
(over 5000°C /s) from 1000 °C to room temperature, what are the
phases present at room temperature after
quenching? Please explain why in
detail.
1600 1538°C 1493°C 1400 1394°C 1200 1147°C 2.14 4.30 y, Austenite 1000 912°C y+Fe3C 800 a 727°C 0.76 0.022 a, Ferrite 600 a Fe3C Cementite (Fe3C) 400 0 (Fe) 2 3 4 6.7 Composition (wt% C) The above shows the iron-carbon phase diagram in weight %...
a) Give the common name for the following phases – Q, y, Fe3C b) For a...
a) Give the common name for the following phases – Q, y, Fe3C b) For a composition of 1 wt% C, calculate the amounts of proeutectoid cementite and pearlite Composition (at% C) 10 15 5 20 25 1600 1538°C 1493°C L 1400 2500 1394°C 7+L 1200 1147°C 2.14 4.30 y, Austenite 2000 Temperature (°C) 1000 Temperature (°F) 912°C y + Fezc 800 1500 Q + y 727°C 0.76 600 0.022 a, Ferrite a + Fezc Cementite (Fe3C) 1000 400 0...
1) what phases are present? 2) what is the carbon content of the liquid? 3) what...
1) what phases are present?
2) what is the carbon content of the liquid?
3) what is the percent liquid present?
4)what temperature is necessary for the entire sample to be
liquid?
*please include calculations if they are used to find the
answer, thanks!*
10 Composition (at%C) 15 20 25 1600 1538°C 1493°C 1400 2500 1394°C +L 1200 1147°C V, Austenite 2.14 Temperature (°C) 2000 Temperature (°F) 1000 912°C y + Fe, C 800 1500 727°C 0.76 0.022 600 a...
5. Three steels with a composition of Fe-0.2 wt.% C, Fe-0.76 wt.% C and Fe-1.1 wt.%...
5. Three steels with a composition of Fe-0.2 wt.% C, Fe-0.76 wt.% C and Fe-1.1 wt.% C are produced by melting and slowly cooling down to room temperature. By referring the phase diagram provided in figure 3, what would you expect in terms of phase changes (solidification sequence) in all three alloys as the temperature of the alloys reduces from melting temperature to room temperature? What will be the approximate weight fraction of each of those micro constituents at room...
67) In Fig. 3 composition is provided as mass % C (carbon) . a. Starting as a liquid at 2.5 m%C, with cooling, what...
67) In Fig. 3 composition is provided as mass % C (carbon) . a. Starting as a liquid at 2.5 m%C, with cooling, what is the composition of the last liquid drops at 1154C? Give your value here and mark with an "a" on Fig. 3. 1600- 1538 C 1500- 1495 C J Liquid 1400-1394c Liquid Cementite 1300- Austenite 1154 C Liquid Austenite (y-Fe) 1200- 1100- 2,08% 1000 Austenite + Cementite 900- 912'C A- o.680 800- 738 C (A,) 700...
Consider 1.1 kg of austenite containing 1.2 wt% C, cooled to below 727°C (1341°F). (a) How...
Consider 1.1 kg of austenite containing 1.2 wt% C, cooled to
below 727°C (1341°F). (a) How many kilograms of total ferrite form?
(b) How many kilograms of total cementite form? (c) How many
kilograms of pearlite form? (d) How many kilograms of the
proeutectoid phase form? The iron-iron carbide phase diagram is
shown in the Animated Figure 10.28
Composition = 0 wt% Composition = 0 at% emperature = 0 °C Temperature = 32 F Composition (at% C) 10 15 20...
(12 Question 4: points: 4 pts each) Consider 3.0 kg of austenite containing 1.6 wt% C at 1100 °C, cooled to below 726 °C. (a) What is the proeutectoid phase? (b) How many kilograms of total ferrite and cementite form? (c) How many kilograms each of pearlite and the proeutectoid cementite form? Composition (at% C) 10 15 5 20 25 0 1600 1538°C 1493°C L 1400 S 1394°C 7+L 1200 1147°C 2.14 4.30 y, Austenite Temperature (°C) 1000 912°C y...
Consider the Fe-Fe3C phase diagram and answer the following questions: 21. At a temperature just below the eutectic (1147°C) for a sample with 4 wt% C please calculate the mass fraction of (a) primary Y (austenite), (b) eutectic y (austenite), and for a sample with 5 wt% C please calculate the mass fraction of (c) primary Fe,c (cementite), (d) eutectic Fe C (cementite). (8%) 22. At a temperature just up the eutectic (1147°C), at first for a sample with 4...
The microstructure of an iron-carbon alloy consists of proeutectoid cementite and pearlite; the mass fractions of these microconstituents are 0.12 and 0.88, respectively. Determine the concentration of carbon in this alloy. The iron-iron carbide phase diagram is shown in the Animated Figure 9.24. wt%C Composition = 0 wt% C Composition = 0 at% C Temperature = 400 °C Temperature = 752 F 2025 Composition (at% C) 10 15 160025 1600 97538 9493 °C 1400 1400 2500 | 1394 °C y+L...
When the steel containing 3.0wt% carbon is quenched very quickly
(over 5000°C /s) from 1000 °C to room temperature, what are the
phases present at room temperature after
quenching? Please explain why in
detail.
1600 1538°C 1493°C 1400 1394°C 1200 1147°C 2.14 4.30 y, Austenite 1000 912°C y+Fe3C 800 a 727°C 0.76 0.022 a, Ferrite 600 a Fe3C Cementite (Fe3C) 400 0 (Fe) 2 3 4 6.7 Composition (wt% C) The above shows the iron-carbon phase diagram in weight %...
a) Give the common name for the following phases – Q, y, Fe3C b) For a composition of 1 wt% C, calculate the amounts of proeutectoid cementite and pearlite Composition (at% C) 10 15 5 20 25 1600 1538°C 1493°C L 1400 2500 1394°C 7+L 1200 1147°C 2.14 4.30 y, Austenite 2000 Temperature (°C) 1000 Temperature (°F) 912°C y + Fezc 800 1500 Q + y 727°C 0.76 600 0.022 a, Ferrite a + Fezc Cementite (Fe3C) 1000 400 0...
1) what phases are present?
2) what is the carbon content of the liquid?
3) what is the percent liquid present?
4)what temperature is necessary for the entire sample to be
liquid?
*please include calculations if they are used to find the
answer, thanks!*
10 Composition (at%C) 15 20 25 1600 1538°C 1493°C 1400 2500 1394°C +L 1200 1147°C V, Austenite 2.14 Temperature (°C) 2000 Temperature (°F) 1000 912°C y + Fe, C 800 1500 727°C 0.76 0.022 600 a...
5. Three steels with a composition of Fe-0.2 wt.% C, Fe-0.76 wt.% C and Fe-1.1 wt.% C are produced by melting and slowly cooling down to room temperature. By referring the phase diagram provided in figure 3, what would you expect in terms of phase changes (solidification sequence) in all three alloys as the temperature of the alloys reduces from melting temperature to room temperature? What will be the approximate weight fraction of each of those micro constituents at room...
67) In Fig. 3 composition is provided as mass % C (carbon) . a. Starting as a liquid at 2.5 m%C, with cooling, what is the composition of the last liquid drops at 1154C? Give your value here and mark with an "a" on Fig. 3. 1600- 1538 C 1500- 1495 C J Liquid 1400-1394c Liquid Cementite 1300- Austenite 1154 C Liquid Austenite (y-Fe) 1200- 1100- 2,08% 1000 Austenite + Cementite 900- 912'C A- o.680 800- 738 C (A,) 700...
Consider 1.1 kg of austenite containing 1.2 wt% C, cooled to
below 727°C (1341°F). (a) How many kilograms of total ferrite form?
(b) How many kilograms of total cementite form? (c) How many
kilograms of pearlite form? (d) How many kilograms of the
proeutectoid phase form? The iron-iron carbide phase diagram is
shown in the Animated Figure 10.28
Composition = 0 wt% Composition = 0 at% emperature = 0 °C Temperature = 32 F Composition (at% C) 10 15 20...
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