ENG045_HW6

# ENG045_HW6 - boundary between two γ-Fe crystals tilted a...

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DATE: November 6, 2011 DUE: November 11 14 (before Noon), 2011 ENG45, homework set #6. 1. Look at Figure 4.18 in the book. a. From the top right 2in × 2in square, find the grain-size number G for the sample. b. Repeat 1a for the lower right 2in × 2in square. c. Find the grain size diameter d from the two diagonals in the micrograph. Give a value for each diagonal. 2. A mixed bag: a. What is the magnitude of the (smallest) Burgers vector in γ -Fe? b. What is the magnitude of the (smallest) Burgers vector in GaAs? c. How large radius of a sphere can fit into the center of cubic diamond Si? d. How large radius of a sphere can fit into the center of UO 2 ? e. Determine the repeat distance between edge dislocations for the simple grain
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Unformatted text preview: boundary between two γ-Fe crystals tilted a small angle θ relative to each other. f. Continuing 2e, give the repeat distance for the two angles θ = 1 ◦ and θ = 3 ◦ . g. Explain how one should calculate the distance between edge dislocations for large angle interfaces. h. Investigate the Hume-Rothery rules for solid solutions Mo-Cu, Ni-Ag, W-Mo, and Mg-Zr. i. Investigate the Hume-Rothery rules the best you can for a solid solution UO 2-PuO 2 . Niels Grønbech Jensen DEPARTMENT OF CHEMICAL ENGINEERING AND MATERIALS SCIENCE | UNIVERSITY OF CALIFORNIA | DAVIS, CALIFORNIA 95616 TEL: 530.752.5335...
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