I’m having trouble answering these questions. à books.. mater als >< \D chapter 2, sector G. What is the comp ×) GThefigure below. × OBng x: loads/HWA-No5.pdf Problem 1(10 points) The figure below shows the phase diagram between silver (Ag) and mercury (Hg). A homogeneous mixture of these elements, with composition 60 wt% Ag-40 wt% Hg, is slowly cooled from 9000, down to room temperature. At what temperature do the first crystals form? 1. What is the composition of the...
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...
Question 4. (6 points) The figure below is a binary Sn-Pb binary phase diagram. Please answer the following questions. Assume you cooled down the molten metal mixture to room temperature along line A and B for each composition with a very slow cooling rate. (a) How many phases at Point A and Point B (b) What is the composition, the Line A and B indicates in w196 (c) Please draw the expected microstructures into the three boxes below. Line A...
2. [25 points] The following figure shows the phase diagram of Cu-Ag alloy system. A mixture of Ag and Cu with a eutectic composition (or concentration) is heated to a high temperature and keep for enough time to prepare the material into a uniform liquid state. The material is then cooled down to 800°c. Cu-Ag System 1200 Liquid 800 A 600 400 100 80 60 40 20 wt% Ag a) What is the Ag composition in the original material so...
A 1.5-kg specimen of a 88 wt% Pb-12 wt% Sn alloy (Animated Figure 9.8) is heated to 220°C; at this temperature it is entirely an α-phase solid solution. The alloy is to be melted to the extent that 50% of the specimen is liquid, the remainder being the α phase. This may be accomplished either by heating the alloy or changing its composition while holding the temperature constant. (a) To what temperature must the specimen be heated? °C [The tolerance...
2. [25 points] The following figure shows the phase diagram of Cu-Ag alloy syst em. A mixture of Ag and Cu with a eutectic composition (or concentration) is heated to a high temperature and keep for enough time to prepare the material into a uniform liquid state. The material is then cooled down to 800°C. Cu-Ag System 1200p Liquid 1000 800 A B. 600 400 200 100 80 60 40 20 wt% Ag (o) What is the Ag composition in...
6. A 2.0-kg specimen of an 85 wt% Pb-15 wt% Sn alloy is heated to 200°C (390°F); at this temperature it is entirely an α-phase solid solution, The alloy is to be melted to the extent that 50% of the specimen is liquid, the remainder being the phase. This may be accomplished by heating the alloy or changing its composition while holding the temperature constant. (a) To what temperature must the specimen be heated? (b) How much tin must be...
67) In Fig. 3 composition is provided as mass % C (carbon) . a. Starting as a liquid at 2.5 m%C, with cooling, what is the composition of the last liquid drops at 1154C? Give your value here and mark with an "a" on Fig. 3. 1600- 1538 C 1500- 1495 C J Liquid 1400-1394c Liquid Cementite 1300- Austenite 1154 C Liquid Austenite (y-Fe) 1200- 1100- 2,08% 1000 Austenite + Cementite 900- 912'C A- o.680 800- 738 C (A,) 700...
Liquid-Liquid Equilibrium (Miscibility Gap) Mixture of Ethanol and Dodecane BB Trg Miscibility Gap ONWA I 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 Pure Mole Fraction of Ethanol [mol/mol) Dodecane Ethanol Ethanol and dodecane are partially miscible in each other at certain temperatures. Using the phase diagram, answer these questions (show work on the diagram). a. At what temperature are they completely miscible? b. For a mole fraction of 0.50 at 2.0°C, state the composition of each...
2. For the Cu-Ag phase diagram, answer the following. Label the figure and add is part of your answer sheet....... .........(11 points) a) What is the eutectic temperature and composition? (1 point) b) In the context of this diagram, what does the symbol B represent? (1 point) c) Assume slow cooling and that equilibrium conditions exist for the alloy for 70 wt% Ag - 30 wt% Cu. If this is being cooled from 1000 °C, when will the first solid...