e45_hw_3

e45_hw_3 - E45 HW03 Due References J.F Shackelford...

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E45 HW03 Due September 17, 2010 References: J.F. Shackelford, Introduction to Materials Science for Engineers, 6 th Edition, Prentice Hall, New Jersey (2005) “Crystallographic Planes and Directions.” Materials Research Group, School of Engineering Sciences, University of Southampton. <http://www.soton.ac.uk/~engmats/xtal/crystal/miller.html> Jacobsen, Loren A. “Physical Metallurgy.” May 2008. <http://infohost.nmt.edu/~ljacobso/crystalslides.pdf> Problem 1 3.2 What would be an equivalent two-dimensional point lattice for the area-centered hexagon? SOLUTION Area-centered hexagon Lattice shown without connecting lines Area-centered rhombus Area-centered rectangle Once the lines are ignored, then the lattice is equivalent to the spacing and orientation of the 2-dimensional lattice for area-centered rectangle or rhombus . Problem 2 3.10 Calculate the APF of 0.74 for hcp (hexagonal close-packed) metals (α-Ti, Be, Mg, Zn, Zr). SOLUTION
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e45_hw_3 - E45 HW03 Due References J.F Shackelford...

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