Homework Answers
Eutectic point is defined as the point where all three phases which are 2 liquid phases and that of melt exist simulatenously and at this point the melting point of mixture is lower than that of constituent metals .
It is the lowest temperature at which the two liquids are miscible with each but not chemically reactive and it is the lowest temperature at which melt freezes.
So option b is correct
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)In a eutectic, binary alloy, at the eutectic point, which of the following is true: 6...
Describe what happens if an alloy with the eutectic composition is cooled from just above to just...
Not sure about the questions please answer.
1A)
1b)
1C
Describe what happens if an alloy with the eutectic composition is cooled from just above to just below the eutectic temperature What is the solubility of tin in lead at 160 degrees C? Select one: 0 a. 1 2 at% b. 18.3 at% c, 20 at% O d. zero Which of the following is true for a mixture of elements in a solid? Select one: a. A mixture of elements...
For a 70 wt % You are given the binary eutectic copper-silver phase diagram shown in Figure 2. Cu...
For a 70 wt % You are given the binary eutectic copper-silver phase diagram shown in Figure 2. Cu-30 wt% Ag alloy at a temperature of 1600°F, determine the following: . The phases present at the provided state point The weight percent of these phases along the tie line. The amounts of each of these phases at the state point. The degree(s) of freedom at the provided state point Atomic percent silver 30 40 50 60 70 80 90 10...
What is the fraction of primary β in the X2 alloy that forms under equilibrium cooling at eutecti...
What is the fraction of primary β in the X2 alloy
that forms under equilibrium cooling at eutectic temperature?
What fractions of primary α and eutectic micro-constituent
composition are formed in the X1 alloy below the
eutectic isotherm?
What amounts of α and β form from liquid just below the eutectic
temperature in the X2 alloy?
What are the amounts of total α and the eutectic α in the
X1 alloy at a temperature just below the eutectic
temperature?
Consider...
The following is the phase diagram for the lead-tin alloy: Pb-Sn Phase Diagram Composition (at% Sn)...
The following is the phase diagram for the lead-tin alloy: Pb-Sn Phase Diagram Composition (at% Sn) 100 300 500 200 83 C 61.9 97.8 300 100 100 100 Consider a lead-tin alloy containing 30 wt% Sn slowly (equilibrium) cooled from the liquid phase starting at 300°C. During this cooling process, the temperature of this alloy reaches 183.1° C (just above the eutectic temperature) and is held at this point of interest until equilibrium conditions are met. 1. (4 points) Draw...
1. From the phase diagram for a binary mixture of titanium and nickel, find: a. label...
1. From the phase diagram for a binary mixture of titanium and nickel, find: a. label the two-phase regions with the phases present in each case. b. The phase or phases present in a mixture of 2g nickel with 48g titanium @ 1000C c. Amount of additional nickel in g required for the alloy to start to form a liquid at 1000C. d. Composition of the first liquid that starts to form as nickel is added to this alloy e....
(1) (b) concrete, (c) polyethylene, or (d) water? 1.14 Copper is generally considered easy to weld...
(1) (b) concrete, (c) polyethylene, or (d) water? 1.14 Copper is generally considered easy to weld because of its high thermal conductivity: (a) true or (b) false? (1) 1,15 Which of the following properties or characteristics do not apply to metals (two correct answers): (a) good thermal conductivity, (b) high strength, (c) high electrical resistivity, (d) high stiffness, and (e) ionic bonding? 1.16 An alloy is a metal composed of two or more elements, at least one of which is...
10. In the following phase diagram for Zn-Cu Alloy. Label one eutectic, eutectoid and peritectic point...
10. In the following phase diagram for Zn-Cu Alloy. Label one eutectic, eutectoid and peritectic point and write down the reactions and all other relevant details. Also explain the eutectoid reaction i.e. why does one solid phase convert to two solid phases as the alloy cools down.....(5 points) a)The figure needs to be part of your answer sheet Composition (at% Zn) 20 1200 40 60 100 12200 80 2000 a+L Liquid 1000 1800 B+L 1600 800 1400 3 B Temperature...
6. Consider the Ti-Ni system in the figure below. Atomic Percent Nickel 20 I800 1600 L...
6. Consider the Ti-Ni system in the figure below. Atomic Percent Nickel 20 I800 1600 L 1450C 1400 200 TIN (Ni) 1000 Un) re s00 Hati) s00 Ti Weight Percent Nickel N a. What are the melting temperatures of pure Ni and pure Ti? b. Label the liquidus and solidus lines in the figure. c. Label al field containing two phases in the figure. d. What is the maximum solubility of Ni in a-Ti and Ti in Ni? e. Write...
In the following phase diagram for Zn-Cu Alloy. Label one eutectic, eutectoid and peritectic point and...
In the following phase diagram for Zn-Cu Alloy. Label one eutectic, eutectoid and peritectic point and write down the reactions and all other relevant details. Also explain the eutectoid reaction i.e. why does one solid phase convert to two solid phases as the alloy cools down. a)The figure needs to be part of your answer sheet Composition (at% Zn) 0 20 40 60 80 1200 100 12200 2000 a + L Liquid 1000 1800 B+L 1600 800 + 1400 B...
10. In the following phase diagram for Zn-Cu Alloy. Label one eutectic, eutectoid and peritectic point...
10. In the following phase diagram for Zn-Cu Alloy. Label one eutectic, eutectoid and peritectic point and write down the reactions and all other relevant details. Also explain the eutectoid reaction i.e. why does one solid phase convert to two solid phases as the alloy cools down.....(5 points) a)The figure needs to be part of your answer sheet Composition (at% Zn) 20 40 60 80 1200 100 2200 2000 a + L Liquid 1000 1800 B+L 1600 800 1400 €...
Not sure about the questions please answer.
1A)
1b)
1C
Describe what happens if an alloy with the eutectic composition is cooled from just above to just below the eutectic temperature What is the solubility of tin in lead at 160 degrees C? Select one: 0 a. 1 2 at% b. 18.3 at% c, 20 at% O d. zero Which of the following is true for a mixture of elements in a solid? Select one: a. A mixture of elements...
For a 70 wt % You are given the binary eutectic copper-silver phase diagram shown in Figure 2. Cu-30 wt% Ag alloy at a temperature of 1600°F, determine the following: . The phases present at the provided state point The weight percent of these phases along the tie line. The amounts of each of these phases at the state point. The degree(s) of freedom at the provided state point Atomic percent silver 30 40 50 60 70 80 90 10...
What is the fraction of primary β in the X2 alloy
that forms under equilibrium cooling at eutectic temperature?
What fractions of primary α and eutectic micro-constituent
composition are formed in the X1 alloy below the
eutectic isotherm?
What amounts of α and β form from liquid just below the eutectic
temperature in the X2 alloy?
What are the amounts of total α and the eutectic α in the
X1 alloy at a temperature just below the eutectic
temperature?
Consider...
The following is the phase diagram for the lead-tin alloy: Pb-Sn Phase Diagram Composition (at% Sn) 100 300 500 200 83 C 61.9 97.8 300 100 100 100 Consider a lead-tin alloy containing 30 wt% Sn slowly (equilibrium) cooled from the liquid phase starting at 300°C. During this cooling process, the temperature of this alloy reaches 183.1° C (just above the eutectic temperature) and is held at this point of interest until equilibrium conditions are met. 1. (4 points) Draw...
(1) (b) concrete, (c) polyethylene, or (d) water? 1.14 Copper is generally considered easy to weld because of its high thermal conductivity: (a) true or (b) false? (1) 1,15 Which of the following properties or characteristics do not apply to metals (two correct answers): (a) good thermal conductivity, (b) high strength, (c) high electrical resistivity, (d) high stiffness, and (e) ionic bonding? 1.16 An alloy is a metal composed of two or more elements, at least one of which is...
10. In the following phase diagram for Zn-Cu Alloy. Label one eutectic, eutectoid and peritectic point and write down the reactions and all other relevant details. Also explain the eutectoid reaction i.e. why does one solid phase convert to two solid phases as the alloy cools down.....(5 points) a)The figure needs to be part of your answer sheet Composition (at% Zn) 20 1200 40 60 100 12200 80 2000 a+L Liquid 1000 1800 B+L 1600 800 1400 3 B Temperature...
6. Consider the Ti-Ni system in the figure below. Atomic Percent Nickel 20 I800 1600 L 1450C 1400 200 TIN (Ni) 1000 Un) re s00 Hati) s00 Ti Weight Percent Nickel N a. What are the melting temperatures of pure Ni and pure Ti? b. Label the liquidus and solidus lines in the figure. c. Label al field containing two phases in the figure. d. What is the maximum solubility of Ni in a-Ti and Ti in Ni? e. Write...
In the following phase diagram for Zn-Cu Alloy. Label one eutectic, eutectoid and peritectic point and write down the reactions and all other relevant details. Also explain the eutectoid reaction i.e. why does one solid phase convert to two solid phases as the alloy cools down. a)The figure needs to be part of your answer sheet Composition (at% Zn) 0 20 40 60 80 1200 100 12200 2000 a + L Liquid 1000 1800 B+L 1600 800 + 1400 B...
10. In the following phase diagram for Zn-Cu Alloy. Label one eutectic, eutectoid and peritectic point and write down the reactions and all other relevant details. Also explain the eutectoid reaction i.e. why does one solid phase convert to two solid phases as the alloy cools down.....(5 points) a)The figure needs to be part of your answer sheet Composition (at% Zn) 20 40 60 80 1200 100 2200 2000 a + L Liquid 1000 1800 B+L 1600 800 1400 €...
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