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- Calculate the weight fraction for phases at point B? what are those phases? Is there any eutectic rection? How many phases are present in this diagram? Cu-Ni system T(°C) TA 1300 -L (liquid): A tie ļine liquidus L +a Тв EB solidus (solid) 1200 TD ID 20 3032 35: 4043 50 Ca wt% Nipart a) A carbon-Fe alloy containing 1.5 wt% C is cooled down to 800°C. Determine what phases are present, the fraction of each phase present, and the composition of each phase. part b) A carbon-Fe alloy containing 1.5 wt% C is cooled down to 400 Celsius. Same as above, determine what phases are present, the fraction of each phase present, and the composition of each phase. use the picture below Irn-Iron Carbide Phase Diagram 1600 8 (Ferrite)N538°C 1100 2000 1495°C Liquid 1000- 1400 1394°C 1200 Y (austenite) 2500 y +liquid 1148°C 2.11% 900 Y+ Fe,C 4.30% 2000 1500 800 1000 Y+ cementite Detail view 727°C a+y 700 912°C 727°C a+y 80에 0.77% 0.022% 1500 Ferrite 600 600 a + cementite -Fe,C 1000 α (errte) 1000 Cementite (FeC) - 500 400 a + Fe,C 1 Carbon (% by weight) 6 6.67 0.5 1.0 Carbon (% by weight) 1.5 2.0 2.5 (a) (b) FIGURE 5.4 (a) The iron-iron carbide phase diagram. (b) Detailed view of the microstructures above and below the eutectoid temperature of 727°C (1341°F). Because of the…What is the composition, in at. %, of an alloy that contains 35g of Cu and 42g of Zn Acu= 63.55g/molAzn=65.41g/mol
- 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) 0 20 40 60 80 100 1600 T 1500 1400 1300 1200 1100 1000 1085°C 0 (Cu) 20 T Liquid Liquidus line +L 40 60 Composition (wt% Ni) T 1453 C Solidus line 80 رقم الصفحة 1/1 2800 2600 -2400 2200 2000 100 (Ni) Temperature (F)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 100Composition 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)
- 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(c) in the Cu and Ag phase diagram shown in Figure 1.1, consider an alloy composition of 40 wt% Cu - 60 wt% Ag. Composton Ca RD 20 1200 우 100 2200 2000 1000 pnbn- :000 1600 8.0 1400 912 :200 G00 Sous :000 400 G00 200 0 400 100 40 60 Composition rwts AD Figure 1.1: Cu - Ag Phase Diagram i. What Phases are present in the Alloy at 800° C? i. What are the compositions of present phases if the alloy is cooled by 20° C? iii. What are the mass fraction of phases? If the alloy was further cooled by 2° C, determine the volume fraction of the phases? Take the densities of Cu and Ag as 8.96 and 10.49 g/cm' respectively. iv.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
- 2) Answer the following questions according to the given Ag-Cu system. 1200 Liquid 1000 - 800- (Ag) (Cu) 2 600- 400- 200- 10 20 30 40 50 60 70 80 90 100 Ag Mass % Cu Cu e) For the 95Cu-5Ag alloy, determine the amount and the composition of the each phases and draw the microstructures schematically for the 1010°C, 850°C ve 25°C. f) For the Ag-20% Cu and Ag-80% Cu alloy; from 1100°C to room temperature, (a) For equilibrium solidification, (b) For nonequilibrium solidification (very rapid cooling) Show the change in the microstructures schematically for the given temperatures; i) 1100°C ii) Liquidus temperature iii) 20°C below of eutectic temperature iv) Room temperature2. Determine the amount of liquid phase in the a Cu-50% Ni alloy at 1300°C, % L 1500 1400 L. C +L 58 1300 1200 1100 1000 Cu 20 40 60 80 Ni Weight percent nickel Temperature (°C)A copper-nickel alloy contains 38% by weight of Cu and 62% by weight of Ni and is at 1330 ° C. Using the figure, answer the following questions:a) What is the percentage by weight of copper in the solid and liquid phases at this temperature?b) What percentage by weight of the alloy is liquid and what percentage is solid?