Unveiling the nature of nanoscale crystal plasticity using straws

Khraishi, T. A.; Shen, Y.-L.; Leseman, Z. C.

doi:doi:10.1116/1.3319259

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Journal of Vacuum Science & Technology B / Volume 28 / Issue 2 / Letters

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J. Vac. Sci. Technol. B 28, L13 (2010); http://dx.doi.org/10.1116/1.3319259 (4 pages)

Unveiling the nature of nanoscale crystal plasticity using straws

T. A. Khraishi, Y.-L. Shen, and Z. C. Leseman

Department of Mechanical Engineering, University of New Mexico, Albuquerque, New Mexico 87131

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(Published online 24 March 2010)

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The simulation and visualization of atomic scale behavior during plastic deformation in crystals have been of great interest. Here the authors report a new form of crystal models using stacked drinking straws. The straw model is subjected to indentation pressing while the load-displacement response is measured in situ. Detailed atomistic mechanisms observed during indentation loading are seen to correlate with the overall mechanical response, as well as with theory and previous experiments. Various microscopic features and atomic defects are also incorporated, illustrating the capability of this viable tool for studying nanoscale-mechanical phenomena.

ACKNOWLEDGMENTS

The assistance of Sean Murray, Siddharth Mukherjee, and Kevin Jameson during the course of this work is acknowledged.

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KEYWORDS and PACS

Keywords

indentation, nanostructured materials, plastic deformation, plasticity

PACS

62.25.-g

Mechanical properties of nanoscale systems
62.20.fq

Plasticity and superplasticity
61.46.-w

Structure of nanoscale materials

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History

Received 9 October 2009
Accepted 19 January 2010
Published online 24 March 2010

Digital Object Identifier

http://dx.doi.org/10.1116/1.3319259

PUBLICATION DATA

ISSN

1071-1023 (print)

1520-8567 (online)

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American Vacuum Society

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