6.70 (Fe) Composition (wt% C) Compute the composition of an iron-carbon alloy for which the mass fractions of total ferrite and total cementite are 0.87and 0.13, respectively. a. Co What is the proeutectoid phase for the alloy in problem 1? a. No proeutectoid phase b. Ferrite c. Cementite

6.70 (Fe) Composition (wt% C) Compute the composition of an iron-carbon alloy for which the mass fractions of total ferrite and total cementite are 0.87and 0.13, respectively. a. Co What is the proeutectoid phase for the alloy in problem 1? a. No proeutectoid phase b. Ferrite c. Cementite

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

Question 9 An Ag-Cu alloy contains 25% a and 75% B at 600"C. The composition of the overall alloy is approximately 1000 L+B 800 a /8.87. 28-12 9224 a +8 500 972 400 Ag 10 20 30 40 50 60 70 80 90 Cu Cu (by weight) O A. 73.5% Cu OB. 65.8% Cu OC. 89.6% Cu D 80.2% Cu
16) What is the Eutectiod Composition/Point in this system?
F THIN NTVERSITY 195 Problem Atomic percent silver 30 If 500 g of a 40 wt % Ag-60 wt % °F °C 1100 10 20 40 50 60 70 80 90 Cu alloy is slowly cooled from 1084.5° 1900 1000°C to just below 780°C 1000 L. 961.93 1700 (a) How many grams of liquid and 900 53 L+a 1600 proeutectic a are present at 850°C? 800 F a L+B B 1400 (b) How many grams of liquid and 780° 7.9 71.9 91.2 700- proeutectic a are present at 780°C + AT ? 1200 600 a + B (c) How many grams of a are present in 1000 the eutectic structure at 780°C - AT ? 500 850 400 Cu (d) How many grams of B are present in 10 20 30 40 50 60 70 80 90 Ag Weight percent silver the eutectic structure at 780°C - AT ?
Question 5 Composition (at% C) 10 15 20 25 1600 1538°C 1493°C L. 1400 2500 1394°C y+L 1200 1147°C 2.14 4.30 Y. Austenite 2000 1000 912°C y+ Fezc 800 -a 1500 727°C 0.76 0.022 600 a, Ferrite a+ FezC Cementite (Fe3C) 1000 400 5 6. 6.70 (Fe) Composition (wt% C) Figure 2: Iron- carbon phase diagram (a) State THREE (3) solubility categories of the phase diagram. (b) By referring to the Iron-Carbon phase diagram in Figure 2: (i) Determine the maximum solubility of carbon in a iron (ferrite) and in y-iron (austenite). (ii) Calculate the percentage of phases (a and y) present at 728°C for 0.5%wt carbon. (ii) Sketch the phase(microstructure) as your answer b(ii). Temperature ("C) Temperature (F)
Question 7: The illustration shows the iron-carbon phase diagram. 1600 1400 1200 1000 800 600 400 1538°C 0 (Fe) 1493°C 1394°C 912°C 7. Austenite 0.76 0.022 a, Ferrite Y+L 2.14 Composition (at%C) 15 10 1147 C a+FezC Y+FeyC 4 3 Composition (wt% C) 727 C Cementite (FeyC). 2500 2000 1500 1000 6.70 Temperature (°F) e) Describe the changes in phase compositions of a carbon steel with a carbon content of 1 % (weight-%) from 1500°C down to 727°C with the help of the attached phase diagram and appropriate equations/reactions.
Based on the 2.0 kg of austenite including 0.60 wt% C, cooled to below 727°C. How many kilograms each of total ferrite forms? Composition (at% C) 5. 10 1600 1538 C 15 20 25 1493°C L. 1400 2500 1394°C y+L 1200 1175°C 1145°C 1147°C 2.14 4.30 7. Austenite 2000 1000 912 C y+ FegC 1500 800 727°C 700°C 0.76 0.022 600 a+ Fe;C a, Ferrite Cementite (FegC). 1000 6. 6.70 400 0. 1. 2. 3 4 Composition (wt% C) (Fe) Temperature (°C) Temperature (°F)
Figure 1 show Eutectoid Plain Carbon Steel Phase Diagram. Please indicate the phases present and their corresponding weight fraction at points a, b, c and d. Show your tie-line and calculations based on Lever Rules. Temperature (°C) 1100 900 700 500 300 100 0 100% Fe 7 0.02 1.0 Fe,C 1.2 2.0 7 7 7 7 Fe, C Figure 1 Fe,C Pearlite 4.0 3.0 Weight percent carbon 7+ Fe, C 727°C a + Fe₂C 5.0 Fe, C 6.0 6.7
In this Sn-Pb alloy system, what is the relative percentage of proeutectic alpha phase after alloy 2 is cooled down from 300 °C to room temperature? Alloy 2 Alloy I 327 Solidus Liquidus 300 Liquid Liquidus 250 a + liquid Solidus 200 B+ liquid 183 Eutectic point 150 Solvus +B 100 Solvus 50 19.2 40.0 61.9 97.5 li 60 10 20 30 40 50 70 80 90 100% 100% Weight percent tin Sn Pb O1. 73% O II. 51% O II. 49% O IV. 27% Temperature (C),
ASAP
Q3: Analyze the following figure and answer the following question (Fe-C Diagram) ? 1639 Liquid 1400 +y 7+L L-Fec 1146 C Fe.C- 910 7- Fesc 727 C o.025 a- Fesc 6.67 of Hypo ectd- Hyper ectd 0810 Steel Cast Iron I- What are the % solubility and temperature of exist of a-ferrite? b- 0.025% and 273°c to 910 c. d- 0.05% and 910°c to 1124°c. a-0.05% and 273°c to 910°c. c- 2.1% and 910°c to 1394°c. 2- What are the % solubility and temperature of exist of Austenite (Y)? a- 0.05% and 273°c to 910°c. c- 2.1% and 910°c to 1394°c. b- 0.025% and 273°c to 910°c. d- 0.09% and 1394°c to 1539°c. 3- What are the % solubility and temperature of exist of 8-ferrite? a- 0.05% and 273°c to 910°c. b-0.025% and 273 e to 910°e. c- 2.1% and 910°c to 1394°c. d- 0.09% and 1394°c to 1539°c. 4- What is the % C content in Cementite Fe3C? AB a- 6.67%. b- 0.025%. c- 2.1%. d- 0.09%. (aradu
Composition lat% N 40 60 100 1600 2800 1500 1453 C 2600 Liquid 1400 Solidus line Liquidua line 2400 1300 1200 2200 1100 1085 C 2000 1000 20 40 100 Composition (wt N (NO What is the amount for each phase in 1kg of a 50% Ni-50% Cu alloy at temperatures of 1400, 1300, or 1200 degrees C for point A and point B? Temperature ('C) Temperature ("F)
Question 4 A segment of the Fe/C alloy phase diagram is shown below: Composition (at% C) 15 Temperature (°C) 0 1600 1400 1200 1000 800 600 400 1538°C 0 (Fe) 8 Y 912°C -1493 C 1394-C Y. Austenite 0.76 0.022 a, Ferrite 1 y+L 2 2.14 10 1147 C at Fe₂C L 4.30 Y+Fe3C 4 3 Composition (wt% C) 727°C 20 Cementite (Fe-C) 5 6 25 2500 2000 1500 1000 6.70 Temperature (°F) a) What are the equilibrium phases, compositions and relative fractions of the Fe-C alloy at an average composition Ccarbon of 2% and a temperature of 730 °C? b) What are the equilibrium phases, compositions and relative fractions of the Fe-C alloy at an average composition Ccarbon of 2% and a temperature of 725 °C? 7 c) Sketch the microstructure of the alloy obtained by quick cooling of the alloy from the conditions in part a) to the conditions in part b). Be sure to identify the phases in your sketch.