1. Given the Iron –Iron carbide phase diagram below answer the following questions: Temperature (°C)16001400120010008006001538°C4000912°C(Fe)+?1493°C1394°Cy, Austenite0.760.022a, Ferrite5y+/22.14101147°Ca + Fe3C15L4.30y+Fe3C43Composition (wt% C)727°C20Cementite (Fe3C)56a. The fractions of total ferrite and cementite phasesb. The fractions of the proeutectoid ferrite and pearlite25T25002000150010006.70For a 99.70 wt% Fe-0.30 wt% C alloy at a temperature of 600°C, determine thefollowing:Temperature (°F)

For a 99.70 wt% Fe-0.30 wt% C alloy at a temperature of 600°C, determine the following: a. The…

Answered: Temperature (°C) 1600 1400 1200 1000…

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

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A 200g hypoeutectoid plain carbon steel contains 5.1wt% eutectoid ferrite. 1) What is its average carbon content in weight? 2) What is the weight of total ferrite? 1600 8+7 Liquid 1400 L+ Fe;C L+y 1200 1148°C y austenite 1000 2.0 4.3 y + Fe,C 800 e 723°C 600 0.8 0.02 400 a + Fe,C Fe;C 200 0% C 100% Fe 6 6.67 Fe,C 3 4 Weight percent carbon Temperature ("C)
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
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)
These questions are based on a high carbon stell with a composition of 1.5%C and 98.5%Fe 1)Name the phases present and calculate the amounts of these phases just above the eutectoid temperature. 2)With equilibrium cooling just below the eutectoid temperature calculate the total ferrite.
(0.4 + () × (-1)**) wt% C alloy at a temperature just below the eutectoid, 100 For a determine the fraction of eutectoid ferrite x* = 10 Temperature (°C) 1600 1400 1200 1000 600 1538 C 800 a 400 S 0 (Fe) 912°C -1493 C 1394°C 7. Austenite 0.76 0.022 , Ferrite 2.14 Composition (at%C) 15 10 1147 C a+FeyC L 4.30 y+FejC 4 Composition (wt% C) 727°C 20 Cementite (FeyC) 6 2500 2000 1500 1000 6.70 Temperature (F
The following questions are based on a high carbon steel with a composition of 1,5% C and 98,5% Fe. 1) Give the amount of austenite present at 1100 degrees 2)Give the amount of pro-eutectoid ferrite just above the eutectoid temperature
For a Fe-C alloy with a eutectoid composition, an austenite was rapidly cooled down to 450°C, held for 10 sec, and quenched to room temperature. What is the final microstructure based on its TTT curve? Amount Temperature of Transformation, C 700 600 500 400 300 200 Ae₂! Ae₁ Austenite unstable Ms. 10 10² 103 104 105 seconds Austenite stable 50%- 100 MF TELEP P 100% completed F+B Coarse Pearlite - Fine Pearlite -Upper Bainite (Feathery) Lower Bainite → Martensite + Bainite Martensite 1 1sec 1 min 1hr Transformation Time (Log. Scale) O a. 50% bainite and 50% martensite O b. 50% austenite and 50% bainite O c. 100% bainite O d. 100% martensite Finer Lamellac Bainitic Pearlitic Austenite Fine more Acicular Rapid Etching Martensitic cicular, Slow Etching V.P.H. 210 320 450 700 750
For a 9 wt % Fe-l wt% C steel at a temperature 1600 1538°C Composition tat C) 10 15 20 25 just below the 1493 eutectoid, determine the 1400 'A 2500 following: 1394°C 1200- 1147°C a) The 2,14 7. Austenite 4.30 2000 compositions 1000- 912°C 1. FegC of Fe;C and ferrite (a). 800 1500 727°C O 76 D. 0.022 600 - a. Ferrite *• FezC Cementite (FezC) 1000 400 6. 6.70 3 (Fe) Camposition (w% C) b) The amount of cementite (in grams) that forms in 100 g of steel. c) Sketch the developed microstructure as it is cooled from liquid phase region to below the eutectoid temperature (at least 4-different regionsA, B,C,D), o.) anjeadua Termpar ature (F)
1
Solve correctly please.
1. What temperature does a Fe-C metal with less than 4 weight percent C melt at? 2. What temperature does a Fe-C metal with less than two weight percent C melt at? 3. What climate causes delta-Fe to change into gamma-Fe? 4. What percentage of proeutectoid Fe 3C is present in a steel with 1.15 wt% carbon at 727.1 o C?
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.

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