(c) in the Cu and Ag phase diagram shown in Figure 1.1, consider an alloy composition of 40 wt%Cu - 60 wt% Ag.Composton Ca RD201200우100220020001000pnbn-:00016008.01400912:200G00Sous:000400G00200 04001004060Composition rwts ADFigure 1.1: Cu - Ag Phase Diagrami.What Phases are present in the Alloy at 800° C?i.What are the compositions of present phases if the alloy is cooled by 20° C?iii.What are the mass fraction of phases?If the alloy was further cooled by 2° C, determine the volume fraction of the phases? Take thedensities of Cu and Ag as 8.96 and 10.49 g/cm' respectively.iv.

Answered: Image /qna-images/answer/5f1ab518-f063-4bbf-b415-717250d90d25.jpg

Answered: Figure 1.1: Cu - Ag Phase Diagram i.…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

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An alloy consisting of completely soluble cadmium (Cd) and zinc (Zn) in the liquid state, but neither of them dissolves in each other in the solid state. the table shown below shows the solidification temperatures for various alloys of cadmium and zinc. 1. Draw the equilibrium diagram according to the information given and data in the table and indicating all important temperature and phases. 2. Find the percentage of each phases and percentage of constituents of the alloy that contain 60 % Zn and at a temperature 300 °C. 3. Find the melting point for the following alloys 20 % Cd, 80% Cd 4. Draw the internal structure, noting the phases of the following alloys A) 30 % Cd at 290 °C b) 60 % Cd at room temperature. % of Zinc in alloy Start of solidification ("C) End of solidification ("C) 0 10 14 20 30 40 50 60 321 290 266 275 293 310 328 345 70 80 90 100 362 390 401 419 266 266 266 266 266 266 266 266 266 266 266 266
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
Material science Assuming this system forms a laminar type eutectic, determine the volume proportion of phases for an equilibrium solidified 50% Pb alloy. Sketch the expected microstructure.
PROBLEM 14-23
1200 50% Ag 71.9% Ag 1100 1000 900 100% Cu Temperature (°C) 800 8% Ag\ 20% Ag 700 Time 100% Ag 90% Ag Figure V Cooling curves for a series of Cu-Ag alloys. 11. Cooling curves are obtained for a series of Cu- Ag alloys. Use the data in Figure 4 to produce the Cu-Ag phase diagram. The maximum solubility of Ag in Cu is 7.9% and the maximum solubility of Cu in Ag is 8.8%. The solubilities at room temperature are near zero.
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…
*About the Pb/Sn binary system, find the percentages of phases at room temperature for each of the following alloys. Alloy Chemical composition Percentages of phases at room temperature no. 20%Sn,80% Pb 40% Sn,60% Pb 3 62% Sn,38% Pb 70%Sn,30% Pb 90% Sn, 10% Pb 4

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