Foundations of Materials Science and Engineering
6th Edition
ISBN: 9781259696558
Author: SMITH
Publisher: MCG
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Chapter 8.15, Problem 43AAP
What is the composition of point y in Figure EP8.9?
Figure EP8.9
Ternary phase diagram composition base for an ABC alloy.
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Chapter 8 Solutions
Foundations of Materials Science and Engineering
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- Cite the phases that are present and the phase compositions for the following alloys: 15 wt% Sn–85 wt% Pb at 100°Carrow_forwardCompare the Cu-Ni binary phase diagram with the Al2O3-Cr2O3 binary phase diagram. Why are they so similar? HINT: Review the Hume-Rothery rules.arrow_forwardFor a 76 wt% Pb–24 wt% Mg alloy, make schematic sketches of the microstructure that would be observed for conditions of very slow cooling at the following temperatures: 575°C, 500°C, 450°C, and 300°C. Label all phases and indicate their approximate compositions.arrow_forward
- Based on the phase diagrams, estimate the solubilities of Ni, Zn, Al, Sn, andBe in copper at room temperature. Are these solubilities expected in view ofHume-Rothery’s conditions for solid solubility? Explainarrow_forwardIn 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.arrow_forward4b) 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.arrow_forward
- For a steel with a 0.2 wt%C, what is the mass fraction and composition of phases at 600 (Please draw connections on the graph)arrow_forwardAccording to the binary eutectic Pb-Sn phase diagram for the alloy of having 25 wt% Sn at 200°C determine the phase weight fractions.arrow_forwardAnswer the following questions using the phase diagram of iron and iron carbide below:For a 99.70 wt% Fe–0.30 wt% C alloy at a temperature of 600oC, determine the following:a. The fractions of total ferrite and cementite phases b. The fractions of the pro eutectoid ferrite and pearlitearrow_forward
- You are assured that a Pb-98.5%Sn alloy is good for a treatment of Aging, if we take that information as correct, will it be possible that an alloy Is Pb-10%Sn also very good for that treatment? Justify your answer.arrow_forwardRefer 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.arrow_forwardFigure 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.arrow_forward
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