Nanoscale gold pillars strengthened through dislocation starvation

Julia R. Greer and William D. Nix
Phys. Rev. B 73, 245410 – Published 12 June 2006
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Abstract

It has been known for more than half a century that crystals can be made stronger by introducing defects into them, i.e., by strain-hardening. As the number of defects increases, their movement and multiplication is impeded, thus strengthening the material. In the present work we show hardening by dislocation starvation, a fundamentally different strengthening mechanism based on the elimination of defects from the crystal. We demonstrate that submicrometer sized gold crystals can be 50 times stronger than their bulk counterparts due to the elimination of defects from the crystal in the course of deformation.

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  • Received 21 April 2006

DOI:https://doi.org/10.1103/PhysRevB.73.245410

©2006 American Physical Society

Authors & Affiliations

Julia R. Greer and William D. Nix

  • Department of Materials Science and Engineering, Stanford University, 416 Escondido Mall, Stanford, California 94305, USA

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Issue

Vol. 73, Iss. 24 — 15 June 2006

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