Please explain carefully γFigure 6 shows the eutectoid portion of Fe-Fe3C phase diagram. In particular for Fe-0.35%C alloy, determine(i) the temperature at which austenite first begins to transform on cooling.(ii) the primary microconstituent that form.(iii) the composition and amount of each phase present at 728 °C.(iv) the composition and amount of each phase present at 726°C.(v) the composition and amount of each microconstituent present at 726°C.γ1000γTemperature (γγ800α+YY+απ7+ FeC 727°CFe3C0.02180.77600Fe3Cγα + Fe3C400Fe3CНуроHyper200Fe0.40.81.2 6.67PearliteWeight percent carbonFigure 6: The eutectoid portion of the Fe-Fe3C phase diagram.A steel contains 18% cementite and 82% ferrite at room temperature. Evaluate thecarbon content of the steel. Is the steel hypoeutectoid or hypereutectoid?Pearlite

Approach to solving the question: Let's analyze the given phase diagram and address each question…

Answered: γ Figure 6 shows the eutectoid portion…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

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4b) Figure 6 shows the Fe-Fe3C phase diagram. Evaluate (i) the temperature at which austenite first begins to transform on cooling; (ii) the primary microconstituent that forms; (iii) the composition and amount of each phase present at 728°C; (iv) the composition and amount of each phase present at 726°C; (v) Sketch the evolution of the microstructures of hypereutectoid steels with 1.1 wt% of carbon during the cooling in relationship to Fe-Fe3C phase diagram shown at 900°C, 800°C and 500°C, respectively.
1-The microstructural design of Iron-Carbon(Fe-C) alloys has led to the development of vast range of steels for structural material applications. The phase diagram provide means for producing specific microstructures. Using the phase diagram below to answer the following questions A – If the liquid mixture of Fe-3%Wt C is slowly cooled from 1600 C to 1200C indicate the phase(S) that are present at 1200 C . Also calculate the composition of the of phases.(10) B-Describe the sequence of all phase transformation that accour from Fe-1.5%wt C is slowly cooled from 1600 C to 400 C. Use the diagram below to to describe the microstructures for each phase transformation (10)
Refer to Figure 1 showing the phase diagram for the Fe-Fe3C system. Consider 1.0 kg of austenite containing 1.15 wt% C, cooled to below 727 C (1341 F). What is the proeutectoid phase? How many kilograms each of total ferrite and cementite form? How many kilograms each of pearlite and the proeutectoid phase form? Schematically sketch and label the resulting microstructure.
A lead-tin (Pb-Sn) alloy of composition 30 wt % Sn and 70 wt % Pb is slowly heated from a temperature of 140 OC. Refer to the phase diagram provided in Figure 1 and answer the following. (i) At what temperature does the first liquid phase form? (ii) What is the composition of this liquid phase? (iii) At what temperature does complete melting of the alloy occur? (iv) What is the composition of the last solid remaining prior to complete melting?
Based on the copper-silver phase diagram, for the alloy with 25wt% Ag-75wr% Cu at 778°C (a) Determine the phase(s), % composition, and mass fraction of each phase, and sketch the microstructure; (b) Determine the mass fraction of primary a phase and eutectic a phase. Composition tatN A 100 2200 20 40 60 80 1200 2000 Liquidus 1000 Liquid 1800 Solidus 1600 9 800 779C (7) B 1400 91.2 (Cpg 8.0 71.9 1200 600 1000 Solvus 800 400 600 200 0 400 100 20 40 60 80 (Ag) (Cu) Composition (w% A Temperature (C) w aradua
A lead-tin (Pb-Sn) alloy of composition 50 wt % Sn and 50 wt % Pb is slowly heated from a temperature of 100 °C. Refer to the phase diagram provided in Figure 1 and answer the following. (i) At what temperature does the first liquid phase form? (ii) What is the composition of this liquid phase? (iii) At what temperature does complete melting of the alloy occur? (iv) What is the composition of the last solid remaining prior to complete melting? Composition (at% Sn) 20 40 60 80 100 327°C 600 300 Liquid 500 232°C a + L 200 B+L 1400 183°C 18.3 61.9 97.8 300 100 a + B 200 H100 20 40 60 80 100 (Pb) Composition (wt% Sn) (Sn) Figure 1. Lead (Pb) and Tin (Sn) Phase diagram Temperature (°C) Temperature (°F)
Q1 / Two metals Beryllium (Be) and Silicon (Si) have melting points 1282°C and 1414 °C respectively, are completely soluble as liquids but completely insoluble as solids . They form a eutectic at 1090°C containing 61 wt% Si -39wt% Be? Determine the following:- 1- Draw the thermal equilibrium phase diagram and identify all phases are present in diagram ,then sketches what happens in microstructure when the alloys containing , a- 10wt% Si, b-70wt%Si , solidify completely. 2- Determine the composition and the amount of each phase for the alloy which contain 15 wt% Si-85wt% Be at 1150°C If the alloy is hypoeutectic determine the amount of eutectic at 600 °C? or hypereutectic and
According to the following graph, two samples of 1080 steel are cooled from the eutectoid temperature, one at a cooling rate of 250°C/s and the other at a cooling rate of 7.27x10-8 °C/s. Specify the phases obtained and explain their formation from thermodynamic and kinetic perspectives. Also, briefly describe their formation. Draw the microstructure of the phases obtained. Sıcaklık (C) 800 700 600 500 400 300 200 100 0 10 1 T M(başlama) M(% 50) M(% 90) 10 M+O -Otektoid Sıcaklık 10² Zaman (s) % 50 10³ 104 105
Can you draw on the sketch and show all steps
. Using the isothermal transformation diagram for an iron-carbon alloy of eutectoid composition, specify the nature of the final composition in terms of microconstituents present and approximate percentages: a) Rapidly cool to 350 oC, hold for 104 s, and quench to room temperature. b) Rapidly cool to 250 oC, hold for 100 s, and quench to room temperature. c) Rapidly cool to 650 oC, hold for 20 s, rapidly cool to 400 oC, hold for 103 s, and quench to room temperature.
Copper-rich copper-beryllium alloys are precipitation hardenable. After consulting the portion of the phase diagram shown in Figure below, do the following: Composition (at% Be) 10 15 20 Liquid 1000 866°C 800 -620°C 600 a+ 400 2 3. (Cu) Composition (wt% Bo) (1) Indicate the range of compositions over which these alloys be precipitation hardened. (ii) Describe the heat-treatment procedures (in terms of temperatures) that would be used to precipitation harden an alloy having a composition of your choosing but lying within the range given for part (i). Temperature ("O
Figure below is a binary eutectic copper-silver phase diagram. Consider if 500 grams of an 88 wt% Ag–12 wt% Cu alloy is slowly cooled from 1000oC to 700oC. α-phase is copper-rich solid solution and β-phase is silver-rich solid solution. Density of copper and silver is 8.96 g/cm3 and 10.49 g/cm3 respectively. At 700oC, determine the: 1)composition of the phases present.

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