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Our research from the past year has been widely disseminated through: The Ph.D. thesis of M. Frary

Frequency. Number of boundaries in the cluster. Development of Percolation Theory for Interface Networks in Materials Christopher A. Schuh, Materials Science and Engineering, MIT, MET DMR-0346848.

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Our research from the past year has been widely disseminated through: The Ph.D. thesis of M. Frary

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  1. Frequency Number of boundaries in the cluster Development of Percolation Theory for Interface Networks in MaterialsChristopher A. Schuh, Materials Science and Engineering, MIT, MET DMR-0346848 Materials usually contain internal interfaces, some of which can be weak-links that compromise properties. We study the connectivity among the “weak-link” boundaries at short-, medium-, and long-range through polycrystalline structures Monte Carlo computer simulations are used to construct microstructures and impose crystallographic constraints on the grain boundary network. … and we have recently shown that these have a strong tendency to form preferred, or “magic”, cluster sizes. This result applies to all polycrystals, and will be especially important for micro-systems technologies • Our research from the past year has been widely disseminated through: • The Ph.D. thesis of M. Frary • The M.Eng. thesis of J. Zielinski • The B.S. thesis of C. Ng • High-profile papers in Phil.Mag. (v85 p1123), Acta Mater. (v53 p4323) and J. Materials Science (v40 p847) • 9 seminars and conference presentations (7 invited) Crystallography is used to understand the tendency for local clustering among “weak-link boundaries”…

  2. Development of Percolation Theory for Interface Networks in MaterialsChristopher A. Schuh, Materials Science and Engineering, MIT, MET DMR-0346848 Our research involves education at many levels: B.S. students Ph.D. students Christopher Ng successfully defended his B.S. thesis in 2005, on grain boundary connectivity at quadruple nodes. He was given the “Best Thesis Award” by the Department Megan Frary received her Ph.D. in 2005 for her work on grain boundary network science, and is now an Assistant Professor at Boise State University Vinay Rodrigues has been working on his B.S. thesis for 9 months and will defend it in 2006, on the development of a new crystallographic theory for triple junction statistics Ying Chen joined the group in 2004 and studies the structure- mechanical property relationships in grain boundary engineered materials Outreach: Visiting Students Soeren Mueller visited for 6 months from the Institut für Werkstoffwissenschaften und-technologien, Berlin, to study grain boundaries in magnesium Jeremy Mason joined the group in 2005 and is developing a polychromatic percolation theory for grain boundary networks Suzanne Nichols visited from University of Louisville for 3 months in 2004, and developed codes for grain boundary analysis M.Eng. student Jeff Zielinski was awarded an M.Eng. degree in 2005 for his thesis analyzing the business and technology of grain boundary engineering Aoife Kelly is visiting for a 4 month period from Trinity College, Dublin, to study grain boundary connectivity in three dimensions

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