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This project has made broader impacts with: Training and education of students

CAREER: Microstructure and Size Effects on Metal Plasticity at Limited Length Scale Frederic Sansoz, University of Vermont State Agricultural College, DMR 0747658.

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This project has made broader impacts with: Training and education of students

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  1. CAREER: Microstructure and Size Effects on Metal Plasticity at Limited Length ScaleFrederic Sansoz, University of Vermont State Agricultural College, DMR 0747658 • Objective: To study the processes of microstructure evolution and plastic flow during deformation of nanoscale metallic single-crystals containing a high density of pre-existing dislocations and defects. • Research Highlights: • Complex networks of dislocations were generated in Cu nanopillars by a new atomistic simulation technique. • We examined their evolution during compression as a function of diameter. • Sub-75nm Cu pillars showed same flow stress scaling than past compression experiments. • A deformation mechanism map was obtained as a function of pillar diameter. • The origin of the size-dependence of strength observed experimentally in Cu nanocrystals was clarified.

  2. CAREER: Microstructure and Size Effects on Metal Plasticity at Limited Length ScaleFrederic Sansoz, University of Vermont State Agricultural College, DMR 0747658 • This project has made broader impacts with: • Training and education of students • Co-organization of symposium “Mechanical Behavior of Low Dimensional Materials” at 2010 MS&T conference (with J. Lou, Z. Zhang, and others). • Dissemination of new knowledge: • -F. Sansoz, “Atomistic Processes Controlling Flow Stress Scaling during Compression of Nanoscale Face-Centered Cubic Crystals”, Acta Mater., 59, 3364-3372 (2011). • -F. Sansoz, “Nanoscale Crystal Plasticity: Rising to the Surface”, an online summary for Azonano.com's Nanotechnology Thought Leaders Series (2010). • -F. Sansoz and V. Dupont, “Nanoindentation and Plasticity in Nanocrystalline Ni Nano-wires: A Case Study in Size Effect Miti-gation”, Scripta Mater., 63, 1136 (2010).

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