The following question refer to the phase diagram shown here.Composition (at% Sn)60TTemperature (°C)300200OC0100327°CO 98 wt% SnO 100 %O 61.9 wt% Sn0 0%O 73 wt% Sn20TO 50%O 90 wt% Sn18.340T20183°Ca + ß40TLiquid61.980B+L80232°C97.8100→600010060Composition (wt% Sn)(Pb)(Sn)Adapted from Binary Alloy Phase Diagrams, 2nd edition, Vol. 3, T. B. Massalski (Editor-in-Chief), 1990. Reprintedby permission of ASM International, Materials Park, OH.In the Pb-Sn phase diagram, what is the approximate composition of the 3 phase for an alloy with 90 wt% Sn and at 200°C?500400B300 a200Temperature (°F)100

Given 90%wt Sn at 200oC To find Approximate composition of Beta phase

a + L in 18.3 20 183°C 40 a + ß Liquid 61.9 80 B+L 232°C 97.8 al 600 500 400 300 60 100 Composition (wt% Sn) (Sn) Alloy Phase Diagrams, 2nd edition, Vol. 3, T. B. Massalski (Editor-in-Chief), 1990. Reprinted M International, Materials Park, OH. phase diagram, what is the approximate composition of the 3 phase for an alloy with 90 wt% Sn and at 200°C? 200 100 Temperature (°F)

a + L in 18.3 20 183°C 40 a + ß Liquid 61.9 80 B+L 232°C 97.8 al 600 500 400 300 60 100 Composition (wt% Sn) (Sn) Alloy Phase Diagrams, 2nd edition, Vol. 3, T. B. Massalski (Editor-in-Chief), 1990. Reprinted M International, Materials Park, OH. phase diagram, what is the approximate composition of the 3 phase for an alloy with 90 wt% Sn and at 200°C? 200 100 Temperature (°F)

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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3) You see Al-Cu phase diagram below and two microstructures (A and B) having the same nominal composition of 3 percent Cu. In these microstructures, matrix is a and spheres refer to CuAl₂ particles. In A and B, the size of big particles are the same. a) For the same volume constant, if we heat treat the both microstructures at T₁ for a long time, is there any changes in both microstructures? If so, what is that? And is the changes the same for both A and B? Is the rate of changes the same for A and B? Draw the final microstructures of A and B if any changes occur you think so. Temperature a AI 2 I 4 a +CuAl2 1 6 Copper,% CuAl2 α
In Figure 1 (phase diagram), an alloy composition of 95 wt% Mg and 5 wt% Al is cooled from 700 C to 475 C. An analysis of the resulting ε solid-phase composition reveals that it has a higher Mg content than is anticipated by the phase diagram.a) Explain why this might be the case and how your reasoning results in the higher-than-expected Mg content.b) Provide a sketch showing the likely distribution of Mg content within the volume of ε solid-phase.
Temperature (°C) 700 600 0 500 400 300 0 (AI) a 5 a+L 10 Composition (at% Cu) 10 20 a +0 L 30 Composition (wt% Cu) 20 0+ L 0 (CuAl₂) 40 30 50 1200 1000 800 600 Temperature (°F) a) For the alloy represented by the phase diagram above, what is the wt% content of eutectic if an alloy of 2.5 wt% Cu is cooled very slowly from the molten state to 300°C? b) What phases are present in 2.5 wt% Cu material if it is quenched from 550°C?
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.
For an alloy containing 20 wt % Ag, refer to the Cu-Ag phase diagram given in the Figure: What is the melting point of Cu in °C? What are the relative amounts(in %) of the existing phases at 900°C? Define the Eutectic point in terms of °C and the composition % of Ag.
Is it possible to have a copper-nickel alloy that, at equilibrium, consists of a liquid phase of composition 20 wt% Ni-80 wt% Cu and also an a phase of composition 37 wt% Ni-63 wt% Cu? If so, what will be the approximate temperature of the alloy? If this is not possible, explain why. Temperature (°C) 1600 1500 1400 1300 1200 1100 1000 0 1085°C (Cu) 20 Liquid Liquidus line L B 40 a+L a A 60 Composition (wt% Ni) (a) 1455°C Solidus line 80 2800 2600 2400 2200 2000 100 (Ni) Temperature (°F) Temperature (°C) 1300 1200 20 Liquid Tie line. a + Liquid a 1 KR I 1 1 B ↑ Co a + Liquid -S 30 CL Composition (wt% Ni) (b) 40 1 Ca a 50
5. [Phase Diagram] (1) Here is Cu-Ag phase diagram and two cases (composition and temperature) are given below. At each case, (i) cite the phase(s) present(s), (ii) estimate the phase composition(s), (iii) weight fraction of the phase(s) and (iv) sketch its microstructure for the following alloy. () a. 71.9 wt% Ag-28.1 wt% Cu at just above 779 °C b. 71.9 wt% Ag-28.1 wt% Cu at just below 779 °℃ Temperature (°C) 1200 A 1000 800 600 400 0 200 0 α C (Cu) B 8.0 (Ca E) -Solidus Solvus 20 20 a + L Composition (at% Ag) -Liquidus 779°C (TE) 40 40 a + B Liquid 60 Composition (wt% Ag) 60 E 71.9 (CE) 80 80 B+L 91.2 (CBE) G 100 B H 2200 2000 1800 F 1600 1400 1200 1000 800 600 400 100 (Ag) Temperature (°F)
Q.4) For 30 wt% Sn - 70 wr% Pb alloy at 125 °C, (a) what phases are present? (b) What are the compositions of the phases? (c) Calculate the relative mass fraction of each phase present. Composition (at% Br 100 80 60 40 20 A 3270 Temperature (C) 300 200 100 0 0. (Pb) Solvus Solidu a+L B 18.3 20 liquidus Liquid 183 C 61.9 40 60 Composition (wt% Sn) 80 L 232 C G 97.8 1 600 500 P 400 (3) angesadway 300 200 H 100 100 (Sn)
A hypothetical eutectic phase diagram for metals A and B shows that cooling a liquid melt with a concentration of 50 wt% A-50 wt% B to just below 625 °C (eutectic isotherm temperature) results in simultaneous formation of alpha and beta phases. The phase diagram also shows that alpha (A rich) and beta (B rich) phases exist at left and right extremes of the phase diagram, respectively. At the eutectic isotherm temperature, the maximum solubility of B in A and A in B is 10 wt% and 5 wt%, respectively. The phase diagram does not have any intermetallic compounds. A new solid alloy is made by melting together 86 gr of a 40 wt% A-60 wt% B alloy with 136 gr of 65 wt% A-35 wt% B alloy followed by cooling the melt to 400 °C. If the new alloy is heated up from 400 °C to just below 625 °C, answer the following questions: a. Calculate the overall alloy composition. b. Determine phases present and calculate their respective masses. Calculate the masses of the primary phase, eutectic phase, and…
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)
A 10 30 70 1) For an A-B alloy of composition 25 wt% B (i) Draw the microstructure at T (just above the eutectoid temperature) and calculate the fraction of each phase in the microstructure. (ii) Draw the microstructure at T (just below the eutectoid temperature) and determine the amount of each phase, i.e., fraction of proeutectoid alpha, eutectoid alpha and eutectoid beta. 2) Provide a brief summary of phase transformations which are often observed in the iron-carbon alloy system due to various heat treatment procedures carried out to tune the microstructure. Compare mechanical strength and ductility of the materials/microstructures that form as a result of such heat treatment processes.
1) Draw the iron-Fe;C phase diagram. Consider 0.25 and 1.1 wt% C steel alloy. It is cooled slowly from atemperature within austenite phase to room temperature. Show a) microstructure at 1000 °C b) microstructure at 730°C c) microstructure at 715°C and d) microstructure at room temperature e) What do you say about mechanical properties of these alloys, depending on their microstructure at room temperature?