The phase diagram of the alloy Copper - Silver is shown in the figure below. Composition (at% Ag) 1200 20 40 60 80 100 2200 2000 Liquidus 1000 Liquid 1800 -Solidus F a +L 779°C (Tg) 1600 B+L 9 800 B 1400 8.0 (C.) 71.9 91.2 (Cog (C) 1200 600 Solvus 1000 a +B 800 400 600 200 400 100 20 40 60 80 (Cu) Composition (wt% Ag) (Ag) (a) Cite the phases that are present and the phase compositions for the following alloys: 1) 5 wt% Cu-95 wt% Ag at 900 °C 2) 50 wt% Cu - 50 wt% Ag at 1000 °C 3) 30 wt% Cu - 70 wt% Ag at 900 °C 4) 20 wt% Cu - 80 wt% Ag at 600 °C 5) 40 wt% Cu - 60 wt% Ag at 600 °C (b) Determine the eutectic temperature and eutectic composition. (c) What is the maximum solubility of silver in copper and at which temperature? Temperature ("C) Temperature ("F)

The phase diagram of the alloy Copper - Silver is shown in the figure below. Composition (at% Ag) 1200 20 40 60 80 100 2200 2000 Liquidus 1000 Liquid 1800 -Solidus F a +L 779°C (Tg) 1600 B+L 9 800 B 1400 8.0 (C.) 71.9 91.2 (Cog (C) 1200 600 Solvus 1000 a +B 800 400 600 200 400 100 20 40 60 80 (Cu) Composition (wt% Ag) (Ag) (a) Cite the phases that are present and the phase compositions for the following alloys: 1) 5 wt% Cu-95 wt% Ag at 900 °C 2) 50 wt% Cu - 50 wt% Ag at 1000 °C 3) 30 wt% Cu - 70 wt% Ag at 900 °C 4) 20 wt% Cu - 80 wt% Ag at 600 °C 5) 40 wt% Cu - 60 wt% Ag at 600 °C (b) Determine the eutectic temperature and eutectic composition. (c) What is the maximum solubility of silver in copper and at which temperature? Temperature ("C) 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

See similar textbooks

Similar questions

QUESTION 3: Consider 2 kg of tin-bismuth alloy (Sn-Bi) containing 30 wt% Bi. The phase diagram of the alloy is shown in the figure below. The alloy is cooled to 138 °C (just below the eutectic temperature). 300 271°C 232°C L 9 200 Bi +L B +L 139°C 21 57 100 Bi B + Bi 13°C 20 40 60 80 100 (Sn) (Bi) Composition (wt% Bi) a) What is the proeutectic phase? b) How many kilograms of total phase B and Bi form? c) How many kilograms of the proeutectic phase form? d) How many kilograms of the eutectic phase B and eutectic phase Bi form? e) Schematically sketch and label the resulting microstructure. Temperature (°C)
Consider Al- Cu system below. When Al-40%Cu is heated above 600°C and cooled slowly to a temperature of 545°C . Answer the following. Use the values of composition given in the phase diagram , no estimation .Each has two marks. 700 1200 600 L a + L 6 +L 548 1000 500 (CUAL) a + 6 800 400 600 300 5.65 10 20 30 32.7 40 50 52.5 (AI) Composition (wt % Cu) a. Percentage of the pro-eutectic phase present (% no decimal places) b. Composition of the pro- eutectic phase present (in %Cu one decimal place) c. What is the percentage of larger eutectic component present (% no decimal places) Temperature (°C) Temperature (°F)
2) Answer the following questions according to the given Ag-Cu system. 1200 Liquid 1000 - 800- (Ag) (Cu) 2 600- 400- 200- 10 20 30 40 50 60 70 80 90 100 Ag Mass % Cu Cu e) For the 95Cu-5Ag alloy, determine the amount and the composition of the each phases and draw the microstructures schematically for the 1010°C, 850°C ve 25°C. f) For the Ag-20% Cu and Ag-80% Cu alloy; from 1100°C to room temperature, (a) For equilibrium solidification, (b) For nonequilibrium solidification (very rapid cooling) Show the change in the microstructures schematically for the given temperatures; i) 1100°C ii) Liquidus temperature iii) 20°C below of eutectic temperature iv) Room temperature
Consider 1 kg of tin-bismuth alloy (Sn-Bi) containing 40 wt% Bi. The phase diagram of the alloy is shown in the figure below. The alloy is cooled to 138 "C (just below the eutectic temperature). How many kilograms of phase B form? 300 271°C 232°C 200 Bi + L В +L 139 C 21 100 Bi - В + Bi 13°C vate Windows 100gs to activate Windows (Bi) 20 40 60 80 (Sn) 6:37 PM A 4) ENG 57 B. Temperature (°C)
An alloy system consists of two metals A&B which are soluble in each other in all proportions in the liquid state, but completely insoluble in the solid state. The melting point of metal A is 425°C and B is 375°C. The lowest melting point (Eutectic) is 230°C at 40%B. For a 30 wt% A alloy at 300°C, the phases weight are O 0.4 kg B and 0.6 kg Liquid O 0.21 kg A and 0.789 kg Liquid 0.35 kg B and 0.65 kg Liquid 0.82 kg A and 0.18 kg Liquid
An alloy system consists of two metals A&B which are soluble in each other in all proportions in the liquid state, but completely insoluble in the solid state. The melting point of metal A is 425°C and B is 375°C. The lowest melting point (Eutectic) is 230°C at 40%B. For a 40 wt% B alloy at 450°C, the phases weight are 0 kg A, 0 kg B and 1 kg Liquid 0 kg Liquid and 1 kg A 0.5 kg B& 0.5 kg A O 0.35 kg A and 0.65 kg B
Figure 1 shows the phase diagram of platinum-silver (Pt-Ag) at equilibrium. Determine the phases present, composition, and amount of each phase at 1100 °C and 60 wt.% Ag. Alloy 1 Alloy 2 1800 1600 Liquid O 1400 L+a a 1186°C 1200 L+B 1000 800 a + B B 600 42.4 10 20 30 40 50 60 70 80 90 100% 100% Weight percent silver Ag Pt Figure 1 Temperature (°C)
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
iii) For a 68 wt% Zn-32 wt% Cu alloy, make schematic sketches of the microstructure that would be observed for conditions of very slow cooling at the following temperatures: 1000°C, 760°C, 600°C and 400°C. Label all phases and indicate their approximate compositions. Comportion a In 20 40 60 100 1200 |2200 H2000 Liquid 1000 - 1800 デ+ダ H1600 J400 E 1200 600 400 『+キ 600 200 400 40 60 Conpositon tet% Zro
nochemistry and Equilibrur X Ô https://ezto.mheducation.com/hm.tpx Question 2 (of 10) Label the energy dlagrams and complete the statements about each. Label the energy diagrams below and complete the statements about each. Einitial reactants products Efinal Einitial Efinal increases products reactants Ennal Einitial decreases Egnal Ental Efinal Emitial stays the same decreases increases ΔΕ AE decreases increases released to Energy of system Energy of system Energy is released to surroundings. Energy is absorbed from surroundings. absorbed from Reset Zoom pe here to search ASUS VivoBook This is it but this is wrong it doesn't say what's wrong tho 19 home 80 D F K C V alt S' Energy, E B. Energy, E
Problem 3 Given here are the solidus and liquidus tem- peratures for the copper-gold system. Con- struct the phase diagram for this system and label each region. Composition (wt% Au) 0 20 40 60 80 90 95 100 Solidus Liquidus Temperature (°C) Temperature (°C) 1085 1019 972 934 911 928 974 1064 1085 1042 996 946 911 942 984 1064
An Ag-Cu alloy contains 25% a and 75% B at 600°C. The composition of the overall alloy is approximately 1000 L+B 800 8-87 28-12 922 a + B 500 972 400 Ag 10 20 30 40 50 60 70 80 90 Cu %Cu (by weight) A. 80.2% Cu B. 73.5% Cu C. 65.8% Cu D. 89.6% Cu