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1. (a) The Pb-Sn alloys are used as solders in electronics. Figure B shows the Pb-Sn...
Just part c please 2,) Using the Pb - Sn phase diagram, at the points indicated below, determine the followhg draw tie lines and indicate important values on diagram) I. The phases present II. The co...
Just part c please
2,) Using the Pb - Sn phase diagram, at the points indicated below, determine the followhg draw tie lines and indicate important values on diagram) I. The phases present II. The composition of each phase I. The relative amounts of each phase(expressed in weight percentages) 182°C eutectic. c= 85% Sn b) T= 200°C c- IL=
2,) Using the Pb - Sn phase diagram, at the points indicated below, determine the followhg draw tie lines and indicate...
For a lead-tin alloy of composition Pb-30 wt.% Sn are heated to 300°C and slowly cooling...
For a lead-tin alloy of composition Pb-30 wt.% Sn are heated to 300°C and slowly cooling down to room temperature. A Eutectic phase diagram of lead-tin alloy is shown in figure 3. What are the expected phases at 250°C, 150°C and at room temperature and estimate approximate phase fractions at these temperatures. Schematically draw the microstructures that would form at 250°C, 150°C and at room temperature. For a lead-tin alloy of composition Pb-30 wt.% Sn are heated to 300°C and...
Just part c please 2,) Using the Pb - Sn phase diagram, at the points indicated...
Just part c please
2,) Using the Pb - Sn phase diagram, at the points indicated below, determine the followhg draw tie lines and indicate important values on diagram) I. The phases present II. The composition of each phase I. The relative amounts of each phase(expressed in weight percentages) 182°C eutectic. c= 85% Sn b) T= 200°C c- IL=
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...
Pb-Sn Phase Diagram (Solder Alloys) Slowly cooling down 1 kg solder alloy with 50wt%,Sn from 300°...
Pb-Sn Phase Diagram (Solder Alloys) Slowly cooling down 1 kg solder alloy with 50wt%,Sn from 300°C to room! temperature (1) At 200°C, what are the phases and calculate the amount of each phase (2) At 100°C, what are the phases and calculate the amount of each phase Atomic percentage tin 10 20 30 40 50 60 70 80 90 400 327.502 300 231.9681 20 -Cu-Pb)- 19 183 61.9 97.5 (B-Sn) (a -Sn) 100 13° Pb 10 20 30 40 50...
Material Science!!! The Cu-Sn phase diagram has historical significance as this alloy is known as bronze....
Material Science!!!
The Cu-Sn phase diagram has historical significance as this alloy is known as bronze. The ability to make a bronze alloy changed civilization since bronze has a higher yield strength than pure copper. Cu-Sn alloys also have modern applications in electronics as a basis for the replacement of lead based solders. Answer the following questions, relative to this diagram What is the melting point of pure Cu? What is the melting point of pure Sn? What is the...
1. Below is the phase diagram of Pb-Sn alloy. (a) Describe what happens to a 20%-Pb 80%-Sn alloy as temperature decreas...
1. Below is the phase diagram of Pb-Sn alloy. (a) Describe what happens to a 20%-Pb 80%-Sn alloy as temperature decreases from 300 °C to 50 °C; use sketches as needed. (b) When temperature is kept constant at 200 °C, describe what happens as the Sn concentration is increased from 10 wt% to 90 wt%; use sketches as needed. 100% Liquid Procutectic α 24% Eutectic α Liquid 76% Eutectic β Alloy I Alloy 2 Liquid 49% 327 Liquidus 300 Liquid...
4) Below is the phase diagram for Pb-Sn alloy. a) At 200 C°, determine the phases...
4) Below is the phase diagram for Pb-Sn alloy. a) At 200 C°, determine the phases present at 10%Sn, 40%Sn and 80%Sn. (5 pts) b) At 200 C°, determine the composition of the phases for each weight percentage in (a). (5 pts) c) At 200 C°, determine the relative amount of each phase (weight fractions) for these points (5 pts) d) If you start cooling the system from 300 C° to 100 C°, what differences do you expect in the...
14. Use the lead-tin phase diagram (below). A Sn-Pb alloy is heated to a temperature within...
14. Use the lead-tin phase diagram (below). A Sn-Pb alloy is heated to a temperature within the a liquid phase region. If the composition of the a phase is 10 wt% Sn, determine: a. The temperature of the alloy b. The composition of the liquid phase c. What is the maximum solubility of Sn in a and Pb in B? d. What is the eutectic composition for the Pb-Sn system? Composition (at% Sn) 0 20 40 60 80 100 327°C...
structure and properties of materials Question 2: (12 points: 4 pts each) For a Lead-Tin (Pb-Sn)...
structure and properties of materials
Question 2: (12 points: 4 pts each) For a Lead-Tin (Pb-Sn) alloy of composition 20 wt% Sn - 80 wt% Pb and at 182 °C determine the followings: Show your calculation details in your answer and draw lines on the phase diagram to label the phases and compositions. a) Determine the mass fractions of a and B phases. b) Determine the mass fractions of primary a and eutectic microconstituents. c) Determine the mass fraction of...
Just part c please
2,) Using the Pb - Sn phase diagram, at the points indicated below, determine the followhg draw tie lines and indicate important values on diagram) I. The phases present II. The composition of each phase I. The relative amounts of each phase(expressed in weight percentages) 182°C eutectic. c= 85% Sn b) T= 200°C c- IL=
2,) Using the Pb - Sn phase diagram, at the points indicated below, determine the followhg draw tie lines and indicate...
For a lead-tin alloy of composition Pb-30 wt.% Sn are heated to 300°C and slowly cooling down to room temperature. A Eutectic phase diagram of lead-tin alloy is shown in figure 3. What are the expected phases at 250°C, 150°C and at room temperature and estimate approximate phase fractions at these temperatures. Schematically draw the microstructures that would form at 250°C, 150°C and at room temperature. For a lead-tin alloy of composition Pb-30 wt.% Sn are heated to 300°C and...
Just part c please
2,) Using the Pb - Sn phase diagram, at the points indicated below, determine the followhg draw tie lines and indicate important values on diagram) I. The phases present II. The composition of each phase I. The relative amounts of each phase(expressed in weight percentages) 182°C eutectic. c= 85% Sn b) T= 200°C c- IL=
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...
Pb-Sn Phase Diagram (Solder Alloys) Slowly cooling down 1 kg solder alloy with 50wt%,Sn from 300°C to room! temperature (1) At 200°C, what are the phases and calculate the amount of each phase (2) At 100°C, what are the phases and calculate the amount of each phase Atomic percentage tin 10 20 30 40 50 60 70 80 90 400 327.502 300 231.9681 20 -Cu-Pb)- 19 183 61.9 97.5 (B-Sn) (a -Sn) 100 13° Pb 10 20 30 40 50...
Material Science!!!
The Cu-Sn phase diagram has historical significance as this alloy is known as bronze. The ability to make a bronze alloy changed civilization since bronze has a higher yield strength than pure copper. Cu-Sn alloys also have modern applications in electronics as a basis for the replacement of lead based solders. Answer the following questions, relative to this diagram What is the melting point of pure Cu? What is the melting point of pure Sn? What is the...
1. Below is the phase diagram of Pb-Sn alloy. (a) Describe what happens to a 20%-Pb 80%-Sn alloy as temperature decreases from 300 °C to 50 °C; use sketches as needed. (b) When temperature is kept constant at 200 °C, describe what happens as the Sn concentration is increased from 10 wt% to 90 wt%; use sketches as needed. 100% Liquid Procutectic α 24% Eutectic α Liquid 76% Eutectic β Alloy I Alloy 2 Liquid 49% 327 Liquidus 300 Liquid...
4) Below is the phase diagram for Pb-Sn alloy. a) At 200 C°, determine the phases present at 10%Sn, 40%Sn and 80%Sn. (5 pts) b) At 200 C°, determine the composition of the phases for each weight percentage in (a). (5 pts) c) At 200 C°, determine the relative amount of each phase (weight fractions) for these points (5 pts) d) If you start cooling the system from 300 C° to 100 C°, what differences do you expect in the...
14. Use the lead-tin phase diagram (below). A Sn-Pb alloy is heated to a temperature within the a liquid phase region. If the composition of the a phase is 10 wt% Sn, determine: a. The temperature of the alloy b. The composition of the liquid phase c. What is the maximum solubility of Sn in a and Pb in B? d. What is the eutectic composition for the Pb-Sn system? Composition (at% Sn) 0 20 40 60 80 100 327°C...
structure and properties of materials
Question 2: (12 points: 4 pts each) For a Lead-Tin (Pb-Sn) alloy of composition 20 wt% Sn - 80 wt% Pb and at 182 °C determine the followings: Show your calculation details in your answer and draw lines on the phase diagram to label the phases and compositions. a) Determine the mass fractions of a and B phases. b) Determine the mass fractions of primary a and eutectic microconstituents. c) Determine the mass fraction of...
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