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= 2,) Using the Pb - Sn phase diagram, at the points indicated below, determine the followhg draw tie lines and indicate...
1. (a) The Pb-Sn alloys are used as solders in electronics. Figure B shows the Pb-Sn phase diagram. (i What is the melting point of Pb? (ii) What is the melting point of Sn? (il At what composition and temperature the eutectic reaction occurs? (iv) what is the composition of the ? and ? phases just below the eutectic temperature? Given an alloy with PbsotrSnsowt%. what is the composition of the ? and ? phases at 150 °C? At this...
(12 Question 2: points: 4 pts each) For a Lead-Tin (Pb-Sn) alloy of composition 85 wt% Sn - 15 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 B and eutectic microconstituents. c) Determine the mass fraction of eutectic B. Composition (at%...
For each of the following provide: i) The phases present ii) The composition of each phase iii) The relative wt% of each phase a) 15 wt% Sn-85 wt% Pb at 100°C b) 1.25 kg Sn and 1.4 kg Pb at 200oC c) 55 wt% Zn-45 wt% Cu at 600 °C d) 1.88 kg Cu and 2.12 kg Zn at 500°C e) 21.7 mol Mg and 35.4 mol Pb at 350°C For each of the following provide: i) The phases present...
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...
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...
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...
For an alloy composed of 15 wt% Sn-85 wt% Pb and at 100°C, determine what phases are present, the composition of the phases and the relative amounts (in terms of weight fractions) of the phases. T(°C) 300 L (liquid) L + a 200 183°C T + B / 100 α + β 0 20 80 100 40 60 wt% Sn
The Sn-Pb phase diagram is reproduced below. 10 20 30 40 50 Weight % lead 60 70 1 80 85 95 90 1 350 3270 300 250 232° 200 183° (Pb) Temperature, °C 1.45(2.5) 26.1(38.1) 71 (81) 150 | (Sn) 100 93 (96) 50 96.8 (98.1) 0 0 Sn 10 20 30 70 80 90 40 50 60 Atomic % lead 100 Pb Suppose you wish to prepare an alloy containing primarily Sn-rich grains separated by regions of eutectic microconstituent,...
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...