You have a 1.8 kg sample of austenite containing 0.13 wt% C and it is cooled to less than 727°C (1341°F). The proeutectoid phase is ??ferrite.
(a) How many kilograms each of total ferrite and cementite form?
___ kg of ferrite, ___ kg of Fe3C
(b) How many kilograms each of pearlite and the proeutectoid phase form?
___ kg of proeutectoid ferrite, ___ kg of pearlite
You have a 1.8 kg sample of austenite containing 0.13 wt% C and it is cooled...
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...
Q2 What are the phases present at room temperature for steel of 0.76% C? Determine the composition & amounts of ferrite (a) and cementite (Fe3C) at room temperature in pearlite of eutectoid composition (0.76%C). Use attached Fe-Fe3C phase diagram or Fig. 9.24 in your text book. Composition (at% C) 10 25 1538°C TT - 1493°C 14008 1394°C 1147°C 4.30 y Austenite Temperature (°C) 1000 912°C y + Fezc 800 727°C 0.76 brol 600 0.022 a, Ferrite a + Fea Cementite...
Problem 9.70 (GO Tutorial) Consider 2.6 kg of a 99.4 wt% Fe-0.6 wt% C alloy that is cooled to a temperature just below the eutectoid. The iron-iron carbide phase diagram is shown in the Animated Figure 9.24 (a) How many kilograms of proeutectoid ferrite form? kg [The tolerance is +/- 2.0%.] (b) How many kilograms of eutectoid ferrite form? kg [The tolerance is +/- 2.0%.] (c) How many kilograms of cementite form? kg [The tolerance is +/- 2.0%.] Composition =...
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...
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...
Consider 2.5 kg of austenite containing 0.65 wt% C, cooled to below 727°C (1000 K). (a) What is the proeutectoid phase? (b) How many kilograms each of total ferrite and cementite form? (c) How many kilograms each of pearlite and the proeutectoid phase form? (d) Schematically sketch and label the resulting microstructure
8. For the Fe-C diagram answer the following a) Give the common name for the following phases - a, Y, FeC b) Assume each of the given compositions has been slowly cooled under equilibrium conditions to 700°C. Draw the microstructure of each, taking care to annotate drawings fully, including identification of phases, microconstituents, and features. Also list each phase composition...... (6 points) 100.0% Fe 0.2%C, 99.8%Fe 0.6%C, 99.4%Fe 0.76%C, 99.24%Fe () () () c) For a composition of 1 wt%...
PROBLEM 11 (10 pts) Consider the phase diagram shown below. Be precise when you read the phase diagram. (a) (5 pts) Consider Fe - 1.9 wt% C steel at a temperature just below the eutectoid temperature. Determine the relative amount of the pearlite. Write the Lever rule expression used clearly. (b) (5 pts) Consider Fe - 0.6 wt% C steel at a temperature just below the eutectoid temperature. Determine the relative amount of the pearlite. Write the Lever rule expression...
3. For the Fe-C diagram answer the following ...(11 points) a) Give the common name for the following phases - a, y, FezC...(1 point) b) Assume each of the given compositions has been slowly cooled under equilibrium conditions to 700°C. Draw the microstructure of each, taking care to annotate drawings fully, including identification of phases, microconstituents, and features. Also list each phase composition............(6 points) 100.0% Fe 0.2%C, 99.8%Fe 0.6%C, 99.4%Fe 0.76%C, 99.24%Fe () (0) () (0) c) For a composition...