MSE_2610_HW_2 - MSE 2610 Introduction to the Mechanical...

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MSE 2610 Introduction to the Mechanical Properties of Materials Fall 2008 Homework Assignment #2 DUE: 18 September 2008 1.) Sketch the planes and directions listed below. Be sure to label your axes. a.) Planes in a cubic crystal: (011), (111), (212) b.) Directions in a cubic crystal: [111] , [214], [103] c.) Planes in a hexagonal crystal: (1011), (1010) d.) Directions in a hexagonal crystal: [1001], [0112] 2.) a.) Sketch the simple, face-centered, and body-centered cubic unit cells b.) Calculate the atomic packing factor of the three cubic Bravais lattices c.) Are any cubic lattices close-packed? If so, which families of planes and directions are close-packed? d.) Calculate the theoretical density of aluminum based on the crystal structure, molar mass, and atomic radius. Use the table in Callister to find the necessary data. 3.) There is an unoccupied interstitial site in the unit cell structure of halite at locations with coordinates ¼ ¼ ¼ , measured as fractions of the cell edge. a)
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MSE_2610_HW_2 - MSE 2610 Introduction to the Mechanical...

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