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Journal Article

Correlation between critical temperature and strength of small-scale bcc pillars

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Schneider, A. S.
Former Dept. Micro/Nanomechanics of Thin Films and Biological Systems, Max Planck Institute for Intelligent Systems, Max Planck Society;

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Kaufmann, D.
Dept. New Materials and Biosystems, Max Planck Institute for Intelligent Systems, Max Planck Society;

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Clark, B. G.
Former Dept. Micro/Nanomechanics of Thin Films and Biological Systems, Max Planck Institute for Intelligent Systems, Max Planck Society;

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Frick, C. P.
Former Dept. Micro/Nanomechanics of Thin Films and Biological Systems, Max Planck Institute for Intelligent Systems, Max Planck Society;

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Gruber, P. A.
Former Dept. Micro/Nanomechanics of Thin Films and Biological Systems, Max Planck Institute for Intelligent Systems, Max Planck Society;

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Mönig, R.
Former Dept. Micro/Nanomechanics of Thin Films and Biological Systems, Max Planck Institute for Intelligent Systems, Max Planck Society;

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Kraft, O.
Former Dept. Micro/Nanomechanics of Thin Films and Biological Systems, Max Planck Institute for Intelligent Systems, Max Planck Society;

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Arzt, E.
Former Dept. Micro/Nanomechanics of Thin Films and Biological Systems, Max Planck Institute for Intelligent Systems, Max Planck Society;
Universität Stuttgart, Institut für Metallkunde;

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Citation

Schneider, A. S., Kaufmann, D., Clark, B. G., Frick, C. P., Gruber, P. A., Mönig, R., et al. (2009). Correlation between critical temperature and strength of small-scale bcc pillars. Physical Review Letters, 103(10): 105501, pp. 1-4. doi:doi/10.1103/PhysRevLett.103.105501.

Abstract

Microcompression tests were performed on focused-ion-beam-machined micropillars of several body-centered-cubic metals (W, Mo, Ta, and Nb) at room temperature. The relationship between yield strength and pillar diameter as well as the deformation morphologies were found to correlate with a parameter specific for bcc metals, i.e., the critical temperature Tc. This finding sheds new light on the phenomenon of small-scale plasticity in largely unexplored non-fcc metals.