The design of accurate micro-compression experiments

Zhang, Haitao; Schuster, Brian E.; Wei, Q.; Ramesh, K.T.

doi:10.1016/j.scriptamat.2005.06.043

Cited by 393 publications

(222 citation statements)

References 14 publications

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“…The FIB'ed pillars presented tapering angles of 2-3°, as expected from the annular milling process. These values are in agreement with the results published in the literature for micropiUars manufactured by FIB (Korte and Clegg, 2010;Zhang et al, 2006;Shim et al, 2009). …”

Section: Fig 1 (A)supporting

confidence: 92%

Micropillar compression of LiF [111] single crystals: Effect of size, ion irradiation and misorientation

Soler

Molina-Aldareguia

Segurado

et al. 2012

International Journal of Plasticity

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The mechanical response under compression of LiF single crystal micropillars oriented in the [111] direction was studied. Micropillars of different diameter (in the range 1-5 u.m) were obtained by etching the matrix in directionally-solidified NaCl-LiF and KCl-LiF eutectic compounds. Selected micropillars were exposed to high-energy Ga + ions to ascertain the effect of ion irradiation on the mechanical response. Ion irradiation led to an increase of approximately 30% in the yield strength and the maximum compressive strength but no effect of the micropillar diameter on flow stress was found in either the as-grown or the ion irradiated pillars. The dominant deformation micromechanisms were analyzed by means of crystal plasticity finite element simulations of the compression test, which explained the strong effect of micropillar misorientation on the mechanical response. Finally, the lack of size effect on the flow stress was discussed to the light of previous studies in LiF and other materials which show high lattice resistance to dislocation motion.

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Section: Fig 1 (A)supporting

confidence: 92%

Micropillar compression of LiF [111] single crystals: Effect of size, ion irradiation and misorientation

Soler

Molina-Aldareguia

Segurado

et al. 2012

International Journal of Plasticity

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“…Consequently, the raw displacement data obtained during testing leads to results with high variability in the elastic modulus, which is an unavoidable characteristic shortcoming of nanomechanical testing [3][4][5] . To obtain more accurate results, instead of using the raw data of the measured displacement signal, frames from the in-situ SEM videos were examined to determine the actual displacement.…”

Section: Tensile Testingmentioning

confidence: 99%

Effects of Helium Implantation on the Tensile Properties and Microstructure of Ni₇₃P₂₇ Metallic Glass Nanostructures

Liontas

et al. 2014

Nano Lett.

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We report fabrication and nanomechanical tension experiments on as-fabricated and helium-implanted ∼130 nm diameter Ni 73 P 27 metallic glass nanocylinders. The nanocylinders were fabricated by a templated electroplating process and implanted with He + at energies of 50, 100, 150, and 200 keV to create a uniform helium concentration of ∼3 atom % throughout the nanocylinders. Transmission electron microscopy imaging and through-focus analysis reveal that the specimens contained ∼2 nm helium bubbles distributed uniformly throughout the nanocylinder volume. In situ tensile experiments indicate that helium-implanted specimens exhibit enhanced ductility as evidenced by a 2-fold increase in plastic strain over as-fabricated specimens with no sacrifice in yield and ultimate tensile strengths. This improvement in mechanical properties suggests that metallic glasses may actually exhibit a favorable response to high levels of helium implantation.

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“…For instance, it is observed that an increase in for fixed elastic constants leads to a "sink-in" in the surface profile as the ratio (of elastic modulus to yield strength) varies from infinity representing rigid-plastic deformation to zero representing elastic deformation [36]. Consequently, an increase in for a fixed magnitude of leads to formation of "pile-up" as a smaller value of ( ) represents a lower hardening capability of the material under deformation [37][38][39]. Further details are available in [29].…”

Section: Relative Contributions Of Ssds Andmentioning

confidence: 99%

Indentation studies in b.c.c. crystals with enhanced model of strain-gradient crystal plasticity

Demiral

Roy

2013

Computational Materials Science

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• This is the author's version of a work that was accepted for publication in the Computational Materials Science. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published at:http://www.sciencedirect.com/science/article/pii/S0927025613004072

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The design of accurate micro-compression experiments

Cited by 393 publications

References 14 publications

Micropillar compression of LiF [111] single crystals: Effect of size, ion irradiation and misorientation

Micropillar compression of LiF [111] single crystals: Effect of size, ion irradiation and misorientation

Effects of Helium Implantation on the Tensile Properties and Microstructure of Ni₇₃P₂₇ Metallic Glass Nanostructures

Indentation studies in b.c.c. crystals with enhanced model of strain-gradient crystal plasticity

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The design of accurate micro-compression experiments

Cited by 393 publications

References 14 publications

Micropillar compression of LiF [111] single crystals: Effect of size, ion irradiation and misorientation

Micropillar compression of LiF [111] single crystals: Effect of size, ion irradiation and misorientation

Effects of Helium Implantation on the Tensile Properties and Microstructure of Ni73P27 Metallic Glass Nanostructures

Indentation studies in b.c.c. crystals with enhanced model of strain-gradient crystal plasticity

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Effects of Helium Implantation on the Tensile Properties and Microstructure of Ni₇₃P₂₇ Metallic Glass Nanostructures