Foundations of Materials Science and Engineering
6th Edition
ISBN: 9781259696558
Author: SMITH
Publisher: MCG
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Chapter 8.15, Problem 36AAP
Determine the weight percent and composition in weight percent of each phase present in an Fe–4.2 wt% Ni alloy (Fig. 8.17) at 1517°C + ∆T.
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Is it possible to have a copper–zinc alloy that, at equilibrium, consists of an phase of composition 75 wt% Zn– 25 wt% Cu, and also a liquid phase of composition 90 wt% Zn and 10 wt% Cu? If so, what will be the approximate temperature of the alloy? If this is not possible, explain why.
For an Fe-0.35% C alloy, determine
the composition and amount of each phase present at 726 ° C; and
the composition and amount of each microconstituent present at 726 °C.
find the relative amounts (in terms of mass fractions) of the phases for the following alloys and temperature: 90 wt% Zn-10 wt% Cu at 400°C.
Chapter 8 Solutions
Foundations of Materials Science and Engineering
Ch. 8.15 - Define (a) a phase in a material and (b) a phase...Ch. 8.15 - In the pure water pressure-temperature equilibrium...Ch. 8.15 - How many triple points are there in the pure iron...Ch. 8.15 - Write the equation for the Gibbs phase rule and...Ch. 8.15 - Refer to the pressuretemperature equilibrium phase...Ch. 8.15 - (a) What is a cooling curve? (b) What type of...Ch. 8.15 - Prob. 7KCPCh. 8.15 - What is an alloy? What is the difference between...Ch. 8.15 - Prob. 9KCPCh. 8.15 - What is the significance of the liquidus curve?...
Ch. 8.15 - Prob. 11KCPCh. 8.15 - Prob. 12KCPCh. 8.15 - Prob. 13KCPCh. 8.15 - Describe the mechanism that produces the...Ch. 8.15 - Can coring and surrounding occur in a...Ch. 8.15 - What is a monotectic invariant reaction? How is...Ch. 8.15 - Write equations for the following invariant...Ch. 8.15 - How are eutectic and eutectoid reactions similar?...Ch. 8.15 - Distinguish between (a) a terminal phase and (b)...Ch. 8.15 - Distinguish between (a) an intermediate phase and...Ch. 8.15 - What is the difference between a congruently...Ch. 8.15 - Consider an alloy containing 70 wt% Ni and 30 wt%...Ch. 8.15 - Consider the binary eutectic coppersilver phase...Ch. 8.15 - If 500 g of a 40 wt% Ag60 wt% Cu alloy is slowly...Ch. 8.15 - A lead-tin (PbSn) alloy consists of 60 wt%...Ch. 8.15 - A PbSn alloy (Fig. 8.12) contains 40 wt% and 60...Ch. 8.15 - An alloy of 30 wt% Pb70 wt% Sn is slowly cooled...Ch. 8.15 - Consider the binary peritectic iridiumosmium phase...Ch. 8.15 - Consider the binary peritectic iridiumosmium phase...Ch. 8.15 - Consider the binary peritectic iridiumosmium phase...Ch. 8.15 - In the copperlead (CuPb) system (Fig. 8.24) for an...Ch. 8.15 - For an alloy of Cu70 wt% Pb (Fig. 8.24), determine...Ch. 8.15 - What is the average composition (weight percent)...Ch. 8.15 - Consider an Fe4.2 wt% Ni alloy (Fig. 8.17) that is...Ch. 8.15 - Consider an Fe5.0 wt% Ni alloy (Fig. 8.17) that is...Ch. 8.15 - Determine the weight percent and composition in...Ch. 8.15 - Determine the composition in weight percent of the...Ch. 8.15 - Draw, schematically, the liquidus and the solidus...Ch. 8.15 - Consider the CuZn phase diagram of Figure 8.26. a....Ch. 8.15 - Consider the nickelvanadium phase diagram of...Ch. 8.15 - Consider the titaniumaluminum phase diagram of...Ch. 8.15 - What is the composition of point y in Figure...Ch. 8.15 - In Figure 8.12, determine the degree of freedom,...Ch. 8.15 - The cooling curve of an unknown metal shows a...Ch. 8.15 - In the PbSn phase diagram (Fig. 8.12), answer the...Ch. 8.15 - Based on the CuAg phase diagram in Figure P8.23,...Ch. 8.15 - Based on the PdAg phase diagram in Figure EP 8.3,...Ch. 8.15 - Prob. 49SEPCh. 8.15 - Derive the lever rule for the amount in weight...Ch. 8.15 - Based on the AlNi phase diagram given in Figure...Ch. 8.15 - Prob. 52SEPCh. 8.15 - Based on the Al2O3SiO2 phase diagram in Figure...Ch. 8.15 - (a) Design a CuNi alloy that will be completely...Ch. 8.15 - Prob. 55SEPCh. 8.15 - Given that Pb and Sn have similar tensile...Ch. 8.15 - Consider the sugarwater phase diagram shown in...Ch. 8.15 - In Figure P8.57, if 60 g of water and 140 g of...Ch. 8.15 - In Figure P8.57, if 30 g of water and 170 g of...Ch. 8.15 - At 80C, if the wt% of sugar is 80%, (a) what...Ch. 8.15 - (a) Based on the phase diagram in Figure P8.61,...Ch. 8.15 - Referring to Figure P8.61. explain what happens as...Ch. 8.15 - Referring to Figure P8.61, (a) explain what...Ch. 8.15 - Using Figure P8.40, explain what the phase diagram...Ch. 8.15 - Using Figure P8.40. explain why, according to the...Ch. 8.15 - (a) In the TiAl phase diagram. Figure P8.42, what...Ch. 8.15 - Draw an approximate hypothetical phase diagram for...Ch. 8.15 - Draw the hypothetical phase diagram for a binary...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- List the phase(s) that are present, the phase composition(s) and the weight fractions of the phase(s) for each of the following alloys:(a) 70 wt% Zn-30 wt% Cu at 300 C (b) 90 wt% Pb-10 wt% Sn at 325 C (c) 2.5 kg Cu and 5.0 kg Ag at 900 C (d) 37 lbm Pb and 6.5 lbm Mg at 500 Carrow_forward1000 grams of steel containing 1.5 weight percent carbon is heated to complete melting. After equilibrium is achieved, we slowly cool the alloy. At 720C we keep the alloy to maintain equilibrium. Determine the amounts of the following, in grams. Pearlite Proeutectoid phase Total cementitearrow_forwardCalculate the amounts and compositions of phases at 726oC in a Fe-0.6% C alloy cooled under equilibrium conditions. Disregard the amounts of proeutectoid phases. A. 77.3% α, 22.7% Fe3C; C in α = 6.7% and C in Fe3C = 0.02% B. 91.3% α, 8.7% Fe3C; C in α = 0.02% and C in Fe3C = 6.7% C. 77.3% α, 22.7% Fe3C; C in α = 0.02% and C in Fe3C = 6.7% D. 91.3% α, 8.7% Fe3C; C in α = 0.05% and C in Fe3C = 8.4% E. None of the mentionedarrow_forward
- An alloy of 30 wt % Pb and 70 wt % Sn is slowly cooled from 250°C to 27°C: d) What is the amount and composition of each phase that is present at 183°C - ∆T ? e) What are the amounts of each phase present at room temperature? f) Draw the microstructure 183°C + ∆T and 183°C - ∆T in 2 cm diameter circle.arrow_forwardCite the phases that are present and the phase compositions for the following alloys: 15 wt% Sn–85 wt% Pb at 100°Carrow_forwardUse the copper silver phase diagram below. 100g of a 40 wt% Cu 60 wt% Ag alloy is made and cooled from liquid form. a. At what temperature does the solid phase start to appear? b. What phases exist at 780°C? c. What are the compositions (Cu and Ag%) of the phases in question b? d. What are the weights (in g) of Cu in the solid phase and liquid phase in question b?arrow_forward
- For a 50-50 Mg-Pb alloy, what would the percent of each phase be at 500°C, 300°C and 100°C?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_forwardFor a 70-30 Zn-Cu alloy, what would the percent of each phase be at 800°C and 500°C?arrow_forward
- Copper-Nickel alloy is widely applied in industry. (a) List at least three applications where Cu-Ni alloy is used; (b) How many components and phases are shown in the below phase diagram? (c) For a mixture of 40 wt% Cu and 60 wt% Ni at 1320 oC, what phases are present? Identify theamount of these phases by applying “lever rule”.arrow_forwardFrom the phase diagram of the Fe-0.25wt%C alloy below, determine the phase fraction and elemental composition of the resulting phase immediately after solidification across the eutectoid line (725 C). a.alpha_eutectoid = 96.6 wt% and cementite = 29.85 wt% b.alpha_eutectoid = 96.6 wt% and cementite = 3.4 wt% c.alpha_eutectoid = 1.05 wt% and cementite = 29.85 wt% d.alpha_eutectoid = 29.85 wt% and cementite = 1.05 wt%arrow_forwardA hypothetical A-B alloy of composition 54 wt% B-46 wt% A at some temperature is found to consist of mass fractions of 0.5 for both αand β phases. If the composition of the β phase is 89 wt% B-11 wt% A, what is the composition of the α phase? ________ wt% Barrow_forward
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