MSE hw 6

MSE hw 6 - for measurements at room temperature. (The data...

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Spring 2011 Homework #6 - Phase Diagrams (100 points) (10 pts) 1. Callister 5.6 (10 pts) 2. Callister 5.21 (10 pts) 3. Callister 9.11 (please put your answers in the box below – but show your work elsewhere!) 9.11 Answer Part (a) Part (b) Part (c) Part (d) (10pts) 4. Callister 9.32 (please put your answers in the box below – but show your work elsewhere!) 9.32 Answers Answers Part (a) w α = w β = Part (b) w p- β = w eutectic = Part (c) w eutectic- β = (10 pts) 5. Callister 9.37
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(20 pts) 6. Molybdenum and tungsten form a binary isomorphous system. (a) Using the information in the front of your book, construct on the provided axes a physically realistic phase diagram for the system. Label the phases present. You should have the temperature, composition end points of the diagram correspond to the pure materials. (b) On the accompanying graph, graph the lattice parameter as a function of composition across the diagram
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Unformatted text preview: for measurements at room temperature. (The data in the front of the book are for room temperature atomic radii.) The lattice parameter graph should be quantitative. (10 pts) 7. Copper and lead form a binary eutectic with no solid solubility. Draw a technically plausible binary eutectic phase diagram for this system on the axes provided. The information for the pure elements should be quantitative. (20 pts) 8. Using the silver-copper phase diagram at 650 C and the values for the atomic radii of silver and copper at 650 C , calculate and graph the lattice parameters of the phases you would observe as a function of composition for alloys from pure silver to pure copper. The radii at 650 C are 0.129 nm for copper and 0.146 nm for silver. Label the phases to which the lattice parameter curves correspond....
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MSE hw 6 - for measurements at room temperature. (The data...

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