1 alpha iron is said to be ferrite
gamma iron is said to be Austenite
fe3c is said to be Cementite
2 fraction of pearlite = (6.7 – C1) / (6.7 – 0.76)
= 0.9595
fraction of proeutectoid cementite: = (C1 – 0.76) / (6.7 – 0.76)
= 0.4040
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
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...
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% Ag) 0 20 40 60 80 100 2200 1200 A 2000 -Liquidus 1000 Liquid 1800 F Solidus a + L 1600 a 800 779°C (TE) B+L B E G 1400 8.0 (C&E) Temperature (°C) 71.9 (CE) B 91.2 (CBE) Temperature (°F) 1200 600 1000 Solvus Q+B 800 400 с...
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%...
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...
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...
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 composition wt% C Composition at% C Temperature 400 °C 1 Temperature-752 Composition (at% 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...
Material Science QuestionFor a 0.84 wt% C steel just below the eutectoid temperature, calculate the following:The fractions of total ferrite and cementite phases, the fractions of the proeutectoid cementite and pearlite, and the fraction of eutectoid cementite
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...