Correlation between Critical Temperature and Strength of Small-Scale bcc Pillars

A. S. Schneider, D. Kaufmann, B. G. Clark, C. P. Frick, P. A. Gruber, R. Mönig, O. Kraft, and E. Arzt
Phys. Rev. Lett. 103, 105501 – Published 31 August 2009

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.

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  • Received 4 May 2009

DOI:https://doi.org/10.1103/PhysRevLett.103.105501

©2009 American Physical Society

Authors & Affiliations

A. S. Schneider1, D. Kaufmann2, B. G. Clark1,3,*, C. P. Frick4, P. A. Gruber5, R. Mönig2, O. Kraft2,5, and E. Arzt3,6,†

  • 1Max Planck Institute for Metals Research, Heisenbergstrasse 3, 70569 Stuttgart, Germany
  • 2Forschungszentrum Karlsruhe, Institut für Materialforschung II, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
  • 3INM-Leibniz Institute for New Materials, Campus Building D2 2, 66123 Saarbrücken, Germany
  • 4Mechanical Engineering Department, University of Wyoming, 1000 East University Avenue, Laramie, Wyoming 82071, USA
  • 5Institut für Zuverlässigkeit von Bauteilen und Systemen, Universität Karlsruhe, Kaiserstrasse 12, 76131 Karlsruhe, Germany
  • 6Saarland University, 66123 Saarbrücken, Germany

  • *Present address: Sandia National Laboratories, Albuquerque, NM 87185, USA.
  • Corresponding author. Eduard.Arzt@inm-gmbh.de

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Issue

Vol. 103, Iss. 10 — 4 September 2009

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