3 From the following N-Cu alloy phase dagram, predict phases present, phase composition, and phaseamounts, for a 28% Ni and 72i6 Cu alloy al 1200 "C (2192 "F). (use orly integers numbers)1300LiquidTie line*• Liquid*• Liquid120020304050Composition we N)Figure 11- Cooper-nckel phase diagram (zoom in). Adapled of Callister, W.D, 2015Phases presentNI %Cu %1Concentration of liquid phaseConcentration of solid phaseC.W 1%)W. (%)Phase amountsTemperature CC)

Solution: Given Data: CL=32%Co=34%Cα=43%

From the following Ni-Cu alloy phase dagram, predict phases present, phase composition, and phase amounts, for a 20% Ni and 72% Cu aloy al 1200 *C (2192 "F). (use orly intogers numbers) 1300 Liquid Tie line Liquid Liquid 1200 30 40 Composition twt N) Figure 11- Coopernckol phase diagram (coom in). Adapled of Callister, W.D., 2015 Phases present Cu (%) Concentration of iquid phase Concentration of solid phase C W 161 W (%) Phase amounts Temperature CO

From the following Ni-Cu alloy phase dagram, predict phases present, phase composition, and phase amounts, for a 20% Ni and 72% Cu aloy al 1200 *C (2192 "F). (use orly intogers numbers) 1300 Liquid Tie line Liquid Liquid 1200 30 40 Composition twt N) Figure 11- Coopernckol phase diagram (coom in). Adapled of Callister, W.D., 2015 Phases present Cu (%) Concentration of iquid phase Concentration of solid phase C W 161 W (%) Phase amounts Temperature CO

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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(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 RD 20 1200 우 100 2200 2000 1000 pnbn- :000 1600 8.0 1400 912 :200 G00 Sous :000 400 G00 200 0 400 100 40 60 Composition rwts AD Figure 1.1: Cu - Ag Phase Diagram i. 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 the densities of Cu and Ag as 8.96 and 10.49 g/cm' respectively. iv.
KS) A binary alloy having 28 wt% Cu and balance Ag solidifies at 779°C. The solid consists of two phases a and B. Phase a has 9% Cu whereas phase ß has 8 % Ag at 779°C. At room temperature these are pure Ag and Cu respectively Sketch the phase diagram. Label all phases and temperatures. The melting points of copper and silver are 1083° and 96100 respectively us? Estimate the amount of a and B in the above alloy at 779°C and at room temperature.) b) Calculate the mass fraction of phases for 40% Cu alloy at 300 °C and TR c) What is the composition of the alloys in (b) following:
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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)
Consider Cu - Ag Phase diagram below: 1200 A -Liquidus 1000 Liquid -Solidus 779°C (TE) 800 Temperature (°C) 600 400 a C 200 0 B 8.0 (Cag) Solvus a +L a + ß E 71.9 (CE) B+L 91.2 (CBE) B H 1 1 1 1 1 { ( L 20 40 60 80 100 (Cu) Composition (wt% Ag) (Ag) Consider 71.9% Ag-28.1% Cu, which is cooled below 779°C. What is the composition of the phases present just below 779°C and give the amount of beta phase present
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)
A binary alloy having 28 wt% Cu and balance Ag solidifies at 779°C. The solid consists of two phases a and B. Phase a has 9% Cu whereas phase ß has 8 % Ag at 779°C. At room temperature these are pure Ag and Cu respectively Sketch the phase diagram. Label all phases and temperatures. The melting points of copper and silver are 1083 and 9610 respectively s Pà) Estimate the amount of a and B in the above alloy at 779°C and at room temperature.) b) Calculate the mass fraction of phases for 40% Cu alloy at 300 °C and TR c) What is the composition of the alloys in (b)
b) Figure 1 shows a Cu-Ag phase diagram. Calculate the phase analysis for 50% Ag-50% Cu at 800 °C. Temperature (°C) 1200 1000 800 600 400 200 ( C (Cu) B 8.0 (C₂g) -Solidus Solvus 20 20 a + L Composition (at% Ag) 40 -Liquidus 779°C (TE) a + B 40 Liquid 60 Composition (wt% Ag) 60 71.9 (CE) 80 80 B+L 91.2 (CBg) G to 100 2200 2000 1800 F 1600 1400 1200 1000 800 600 400 100 Temperature (°F)