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 L 200 Bi + L В +L 139 C 21 57 100 Bi - B + Bi 13°C vate Windows 100 gs to acts (Bi) 40 60 80 Winde (Sn) 20 B. Temperature ("C)

1. four processes. 2. Fill out the blanks by labeling the phase regions. 3. Identify the Indicate an in- termediate compound, if any. 3. Temperature (°C) 1600 1400 1200 1000 800 600 400 1538°C 0 (Fe) -1493°C 1394°C 912°C y, Austenite 1 2 0.16 5 0,022 a, Ferrite A N 2.14 Composition (at% C) 15 10 3 1147°C L4 3 4 Composition (wt% C) 4.30 727°C Sketch the microstructure at A, label phases, figure out compositions. 20 Cementite (Fe3C). 5 6 25 6.70

A Pb-30% Sn alloy is cooled from 300°C to 50°C. a) What phases are present for this alloy at 50°C? b) How much of each phase is present at 50°C? c) What is the primary phase and its amount for this alloy at 50°C? Composition (at% Sn) 20 40 60 80 100 327°C 600 300 Liquid 500 232°C a + L 200 ß + L 400 183°C 18.3 61.9 97.8 300 100 a + B 200 100 40 60 80 100 (Pb) Composition (wt% Sn) (Sn) Temperature (°C) 20 Temperature (°F)

help pls A two-phase phase diagram is shown. Answer the following questions t -1300 1500+ Temperature 1100 0 34 54! 166 482 80 Composition of Ni % 20 What is the composition (in % Cu) of the solid phase corresponding to the red dot in between the solidus and liquidus lines in the phase diagram? Just write the number. Do not write the % symbol. Question 17 2.33 100 An alloy is being made with 66% Ni and 34% Cu. When it is cooled from 1500°C to the temperature corresponding to the red dot in the phase diagram, how many kg of liquid is present in the mixture?

Hi i keep getting these wrong

Determine the composition and fraction with 50% Ni and 1300 ° C

What is the composition, in wt% Cr2O3, of the liquid phase in an alloy containing 71 wt% Cr2O3 at 2200C?

XCu versus temperature, liquid-solid phase- equilibrium diagram of a system consisting of Ag and Cu is given. a) Identify each zone and point O b) Define the temperatures T1, T2 and T3 c) Find the degrees of freedom for the points R, T, U, V and Y (f).

Temperature (°C) 700 600 0 500 400 300 0 (AI) a 5 a+L 10 Composition (at% Cu) 10 20 a +0 L 30 Composition (wt% Cu) 20 0+ L 0 (CuAl₂) 40 30 50 1200 1000 800 600 Temperature (°F) a) For the alloy represented by the phase diagram above, what is the wt% content of eutectic if an alloy of 2.5 wt% Cu is cooled very slowly from the molten state to 300°C? b) What phases are present in 2.5 wt% Cu material if it is quenched from 550°C?

Question 4 A segment of the Fe/C alloy phase diagram is shown below: Composition (at% C) 15 Temperature (°C) 0 1600 1400 1200 1000 800 600 400 1538°C 0 (Fe) 8 Y 912°C -1493 C 1394-C Y. Austenite 0.76 0.022 a, Ferrite 1 y+L 2 2.14 10 1147 C at Fe₂C L 4.30 Y+Fe3C 4 3 Composition (wt% C) 727°C 20 Cementite (Fe-C) 5 6 25 2500 2000 1500 1000 6.70 Temperature (°F) a) What are the equilibrium phases, compositions and relative fractions of the Fe-C alloy at an average composition Ccarbon of 2% and a temperature of 730 °C? b) What are the equilibrium phases, compositions and relative fractions of the Fe-C alloy at an average composition Ccarbon of 2% and a temperature of 725 °C? 7 c) Sketch the microstructure of the alloy obtained by quick cooling of the alloy from the conditions in part a) to the conditions in part b). Be sure to identify the phases in your sketch.