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Updated: Jun 19, 2026

Determining the Mechanical Strength of Ultra-Fine-Grained Metals
Published on: November 22, 2021
Correlation between critical temperature and strength of small-scale bcc pillars
A S Schneider1, D Kaufmann, B G Clark
1Max Planck Institute for Metals Research, Heisenbergstrasse 3, 70569 Stuttgart, Germany.
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 T(c). This finding sheds new light on the phenomenon of small-scale plasticity in largely unexplored non-fcc metals.
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