Q2: Consider a Cu-80wt% Ni-20% alloy, determine the following:(a) The liquidus and solidus temperature of alloy.(b) The composition of last liquid to solidify.(c) The composition of last solid to melt.(d) The composition of the solid and liquid phases at 1175 °C. (Draw the microstructure at this points)(e) The amount of the solid and liquid phases at 1175 °C.Composition (at% Ni)0204060801001600T1500140013001200110010001085°C0(Cu)20TLiquidLiquidus line+L4060Composition (wt% Ni)T1453 CSolidus line80رقم الصفحة 1/128002600-240022002000100(Ni)Temperature (F)

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Engineering

Mechanical Engineering

The liquidus and solidus temperatur The composition of last liquid to sol

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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Q2: Consider a Cu-80wt% Ni-20% alloy, determine the following: (a) The liquidus and solidus temperature of alloy. (b) The composition of last liquid to solidify. (c) The composition of last solid to melt. (d) The composition of the solid and liquid phases at 1175 °C. (Draw the microstructure at this points) (e) The amount of the solid and liquid phases at 1175 °C. Composition at No 1600 2800 1500 2600 1400 2400 1300 1200 2200 1100 2000 1000 0 1085 C 20 Liquid Liquidus line 40 60 Composition (wt% NO 1453 C Solidus line 80 100
2: Consider a Cu-80wt% Ni-20% alloy, determine the following: (a) The liquidus and solidus temperature of alloy. (b) The composition of last liquid to solidify. (c) The composition of last solid to melt. (d) The composition of the solid and liquid phases at 1175 °C. (Draw the microstructure at this points) (e) The amount of the solid and liquid phases at 1175 °C. Composition (at% Ni) 20 40 60 80 100 1600 2800 1500 Liquid 1453 C 2600 1400E Solidus line Liquidus line 2400 1300 1200 2200 1100 2000 1085 C 1000 20 40 60 80 100 (Cu) Composition (wt% Ni) (Ni) Temperature ("F)
For 40 wt% Sn – 60 wt% Pb alloy at 150 oC (at point B) as shown in Figure, i. State the name of phase(s) present. ii. Calculate the composition(s) of the phase(s) present. 600 300 Liquid 500 a+L 200 400 300 100 200 100 20 60 100 (Pb) (Sn) Composition (wt % Sn) Temperature ("C) Temperature ("F)
Temperature ("C) Temperature ($1 Consider 1 kg of Copper - Silver alloy (Cu - Ag) containing 75 wt% Ag. The phase diagram of the alloy is shown in the figure below. The alloy is cooled to 778 °C (just below the eutectic temperature). Calculate the mass in kg of the eutectic phase B (phase B that appears during the eutectic reaction) that forms? Composition (at% Ag 20 40 60 100 2200 80 1200 2000 Liquidus 1000 LIquid 1800 Solidus 1600 800 779°C (T 80 91.2 1400 IC. 1200 600 Solvus T000 400 800 200 20 40 80 100 (Cu) Composioon wt A
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)
1-The microstructural design of Iron-Carbon(Fe-C) alloys has led to the development of vast range of steels for structural material applications. The phase diagram provide means for producing specific microstructures. Using the phase diagram below to answer the following questions A – If the liquid mixture of Fe-3%Wt C is slowly cooled from 1600 C to 1200C indicate the phase(S) that are present at 1200 C . Also calculate the composition of the of phases.(10) B-Describe the sequence of all phase transformation that accour from Fe-1.5%wt C is slowly cooled from 1600 C to 400 C. Use the diagram below to to describe the microstructures for each phase transformation (10)
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
QI/ Draw a thermal equilibrium diagram for the binary alloy system (Si –Au), from the following data:- a- Si melts at 1414 °C, and Au melts at 1064 °C , and identify all phases are present in the diagram. b- Eutectic is formed at 360°C containing 20 Wt% Si -80 Wt% Au . c- Determine the amount of each phase for the alloy which consist 60 Wt% Si- 40Wt % Au at 1200 °C and 800 °C ,then determine the amount of eutectic at 200 °C?
In the binary phase diagram for the Cu-Ni system in the Figure provided: 1. Draw the microstructures for each point for the alloy upon cooling (A-E) and label ALL phases! 2. What are the compositions (C's) of EVERY phase and the relative phase amounts (W's) for each microstructure A-E? Show all work! T(°C) (liquid) L 20 (a, solid) 30 A BUD E 40 Co OOOOO w 10 50 wt% Ni CL= Ca= CL= Ca= CL= Ca= C₁= Cu= C₁= Ca= WL= Wa= WL= Wα= W₁= W= W₁= Wa= W₁= Wu= A B E
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)
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:
BI (a) Figure BI below shows the equilibrium phase diagram of hypothetical A - B alloy system. Answer the following questions. What are technical names of Line A and Line B? What do they signify? (i) (ii) With the aid sketches, portray the microstructures and phases that are present for the 20wt%A-80wt%B alloy (Alloy A) at the temperatures of 780 °C, 670 °C, 652 °C, and 500 °C, respectively. (iii) Assume an A - B alloy (Alloy B) has 60wt%a - 40wt%L, in terms of weight, at a temperature of 652 °C. Determine the overall composition of Alloy B. (o) emai 700 8 600 500 400 800 0 A 760 °C Line B W a /9.5 20 Line A a + L 650 °C 40 Liquid (L) wt%B Figure B1 52.5 a + ß 60 B+L 80 93.7 B 100 B