Consider the tin (Sn)- bismuth (Bi) equilibrium diagram reproduced below. An allo containing 10wt% Bi is held at a temperature of 200°C 300 271 250 Liquid 232 200 B+ Liquid a+ Liquid 150 184 1385C 100 a+B 50 Sn 10 20 30 40 60 70 80 90 Bi 50 WeightS Bismuth b) What is the composition (wt% Bi) of each phase? Temperature, C B.
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- The maximum solid solubility of carbon in ferrite occurs at 0.022 wt% C and 727 ° C, the eutectoid composition is 0.76 wt% C, the maximum solid solubility of carbon in austenite occurs at 2.14 wt% C and 1147 ° C, and the cementite composition is 6.7 wt% C. For 2122 g of a 3.2134 wt% C steel at 726 ° C, what will be the mass of carbon present as part of a compound?(a) 67.9 g(b) 74.2 g(c) 58.7 g(d) 83.5 gRefer to the phase diagram below. A copper-nickel alloy of composition 70 wt% Ni-30 wt% Cu is slowly heated from a temperature of 1300°C. (a) At what temperature does the first liquid phase form? (b) What is the composition of this liquid phase? (c) At what temperature does complete melting of the alloy occur? (d) What is the composition of the last solid remaining prior to complete melting?In a given alloy of Nb-Vd: * in the given 24 wt % Nb - 76 wt % Vd alloy with the density of the pure Nb of 8.57 g/cm' and density of the pure Vd of 6.10 g/cm', what is the number of Nb atoms per cubic centimeter (cm') if the atomic mass of Nb is 92.90638 g/mol? a. 1.5728 x 10° Nb atoms b. 1.01945 x 1022 Nb atoms c. 2.81822 x 1014 Nb atoms d. 1.24626 x 1020 Nb atoms
- The assumptions about the virtual process state diagrams of metals A and B similar to the lead-tin system in Figure 9.8 are as follows. (1)The α phase and β phase exist at both ends of A and B. (2) The process composition is 36 wt% A to 64 wt% B. (3) The composition of β phase at the process temperature is 88 wt% A to 12 wt% B. Find the composition of an alloy in which the weight fraction of invitation β and total β is 0.367 and 0.768, respectively.A copper-nickel alloy of composition 45 wt% Ni - 55 wt% Cu is slowly heated from 1200 °C. What percentage of Ni is in the first liquid to form? Use the Cu-Ni equilibrium phase diagram shown below. 1500 Temperature (°C) 1455° 1400 Liquidus L 1300 1280° α + L Solidus 1200 1100 1085° 1240° α 1000 Cu 20 40 60 80 Ni Weight percent nickelIf you are given a fully labeled hypoeutectoid TTT diagram and the associated Fe-C phase diagram, is it possible to determine the average composition of the Fe-C alloy? If so, how?
- A copper-nickel alloy of composition 70 wt% Ni - 30 wt% Cu is slowly heated from 1250 °C. What is percentage of copper in the first liquid phase that forms? Use the Cu-Ni equilibrium phase diagram shown below. 1500 Temperature (°C) 1455° 1400 Liquidus L 1300 1280° α + L Solidus 1200 1100 1085° 1240° α 1000 Cu 20 40 60 80 Ni Weight percent nickel1. Which the alloying elements are stabilize austenite phase form Fe- Fe.C system.Topic: Equilibrium Phase Diagram QUESTION 1 A 50 wt% Pb-50 wt% Mg alloy is slowly cooled from 700C to 400C. (a) At what temperature does the first solid phase form? (b) What is the composition of this solid phase? (c) At what temperature does the liquid solidify? (d) What is the composition of this last remaining liquid phase? Composition (at% Pb) 10 30 40 70 100 700 1200 600 a +L Ma Pb M 1000 500 800 400 Mg Pb 600 300 400 200 a + MgPb 100 MgPb 200 MgPb 20 40 60 100 (Mg) Composition (wt% Pb) (Pb) 1 (5) aungeedue
- QUESTION 2: A part of the phase diagram of X and Y elements that can be mixed isomorphically is given above. 1300 SIVI Alloy at point A; It contains 35% X and 65% Y and is 1250 oC. a) Calculate the percentage of liquid and solid phases of the alloy at a+ SIVI point A. b) Calculate the ratio of X and Y in% of the liquid and solid phases of 1200 the alloy at point A. 20 30 40 50 31 35 42 (3-) wyeisQ2: A/ chose from list (B) a suitable answer for list (A) A В 1. тi ) Fe 2. Au 3. С12 ( -7 to +l 4. covalent Oa = 2RV2 5. allotropy () amu ) Ti B/ Within a cubic unit cell, sketch the following directions: i)101 ii) [212] iii) (3 30) C/1- Define material science; and why study structure ( bonding , crystal structure and defect ) of materials? 2-Why is the density of Metals is more than another materials?Determine if each statement is true or false: (a) Substitutionalalloys are solid solutions, but interstitial alloys areheterogenous alloys. (b) Substitutional alloys have “solute”atoms that replace “solvent” atoms in a lattice, but interstitialalloys have “solute” atoms that are in between the “solvent”atoms in a lattice. (c) The atomic radii of the atomsin a substitutional alloy are similar to each other, but in aninterstitial alloy, the interstitial atoms are a lot smaller thanthe host lattice atoms.