[HTML][HTML] Temperature-dependent size effects on the strength of Ta and W micropillars

OT Abad, JM Wheeler, J Michler, AS Schneider, E Arzt - Acta Materialia, 2016 - Elsevier
The strength of metals increases with decreasing sample size, a trend known as the size
effect. In particular, focused ion beam-milled body-centered cubic (BCC) micropillars exhibit …

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

AS Schneider, D Kaufmann, BG Clark, CP Frick… - Physical review …, 2009 - APS
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 …

Influence of test temperature on the size effect in molybdenum small-scale compression pillars

AS Schneider, CP Frick, E Arzt, WJ Clegg… - Philosophical …, 2013 - Taylor & Francis
Previous research has shown that body-centred cubic (bcc) metals exhibit a smaller size
dependence of strength than what is commonly observed in face-centred cubic (fcc) metals …

Influence of orientation on the size effect in bcc pillars with different critical temperatures

AS Schneider, CP Frick, BG Clark, PA Gruber… - Materials Science and …, 2011 - Elsevier
The size effect in body-centered cubic metals is comprehensively investigated through
micro/nano-compression tests performed on focused ion beam machined tungsten (W) …

Effect of orientation and loading rate on compression behavior of small-scale Mo pillars

AS Schneider, BG Clark, CP Frick, PA Gruber… - Materials Science and …, 2009 - Elsevier
Recently, much work has focused on the size effect in face centered cubic (fcc) structures,
however few pillar studies have focused on body centered cubic (bcc) metals. This paper …

Size dependence of the yield strength of fcc and bcc metallic micropillars with diameters of a few micrometers

SW Lee, WD Nix - Philosophical Magazine, 2012 - Taylor & Francis
Recent micropillar compression tests of fcc and bcc single crystals have shown that 'Smaller
is Stronger'even in the absence of significant strain gradients, an effect that is empirically …

Understanding size effects on the strength of single crystals through high-temperature micropillar compression

R Soler, JM Wheeler, HJ Chang, J Segurado, J Michler… - Acta materialia, 2014 - Elsevier
Abstract Compression tests of< 1 1 1>-oriented LiF single-crystal micropillars 1–5 μm in
diameter were carried out from 25° C to 250° C. While the flow stress at ambient temperature …

Effects of pre-straining and coating on plastic deformation of aluminum micropillars

R Gu, AHW Ngan - Acta materialia, 2012 - Elsevier
The plastic deformation of micropillars is known to be affected by whether dislocations can
escape easily from the material volume, and the extent to which the dislocations mutually …

Dislocation escape-related size effects in single-crystal micropillars under uniaxial compression

H Tang, KW Schwarz, HD Espinosa - Acta Materialia, 2007 - Elsevier
The size-dependence of the plastic response of single-crystal micropillars at
submicron/micron length scales under compression was investigated using three …

Surface effects and the size-dependent hardening and strengthening of nickel micropillars

DE Hurtado, M Ortiz - Journal of the Mechanics and Physics of Solids, 2012 - Elsevier
We evaluate the extent to which two mechanisms contribute to the observed size effect of the
ultimate yield strength of micropillars of diameters in the range of 1–30μm: dislocation pile …