The rate dependent response of a bistable chain at finite temperature

I Benichou, Y Zhang, OK Dudko, S Givli - … of the Mechanics and Physics of …, 2016 - Elsevier
We study the rate dependent response of a bistable chain subjected to thermal fluctuations.
The study is motivated by the fact that the behavior of this model system is prototypical to a …

[HTML][HTML] Interface dominated mechanical properties of ultra-fine grained and nanoporous Au at elevated temperatures

A Leitner, V Maier-Kiener, J Jeong, MD Abad… - Acta materialia, 2016 - Elsevier
Modern design and engineering of highly efficient devices and machines demand
innovative materials to satisfy requirements such as high strength at low density. The …

Emergence of external size effects in the bulk-scale polycrystal to small-scale single-crystal transition: A maximum in the strength and strain-rate sensitivity of …

JY Zhang, X Liang, P Zhang, K Wu, G Liu, J Sun - Acta materialia, 2014 - Elsevier
Using microcompression methodology, various plastic deformation characteristics, namely
the strength, strain-rate sensitivity (SRS) and activation volume, of< 1 0 0>-single-crystalline …

Understanding the strength softening of Zr/Mo and Zr/Ti nanostructured multilayers

SH Wu, ZQ Hou, JY Zhang, YQ Wang, K Wu, G Liu… - Scripta Materialia, 2019 - Elsevier
Abstract Zr/Mo and Zr/Ti nanostructured multilayers manifest a peak hardness at the critical
layer thickness of~ 10 and~ 20 nm, respectively. The non-monotonical thickness-dependent …

Size and rate dependent grain boundary motion mediated by disconnection nucleation

Y Deng, C Deng - Acta Materialia, 2017 - Elsevier
The synthetic driving force method is a widely-used technique in molecular dynamics
simulations to investigate the migration of grain boundaries. Its physical essence, however …

High-strength and tunable plasticity in sputtered Al–Cr alloys with multistage phase transformations

Q Li, Z Shang, X Sun, C Fan, R Su, NA Richter… - International Journal of …, 2021 - Elsevier
To raise mechanical strength of metallic materials, methods such as grain refinement and
amorphization are usually utilized but sacrifice plasticity. Strength and plasticity are largely …

[HTML][HTML] Size-dependent plastic deformation of twinned nanopillars in body-centered cubic tungsten

S Xu, JK Startt, TG Payne, CS Deo… - Journal of Applied …, 2017 - pubs.aip.org
Compared with face-centered cubic metals, twinned nanopillars in body-centered cubic
(BCC) systems are much less explored partly due to the more complicated plastic …

On the strain rate sensitivity of size-dependent plasticity in BCC iron at elevated temperatures: discrete dislocation dynamics investigation

P El Ters, MA Shehadeh - Mechanics of Materials, 2020 - Elsevier
Multiscale discrete dislocation plasticity (MDDP) simulations are carried out to investigate
the mechanical response and microstructure evolution of BCC iron micropillars under …

Influence of surface roughness on the deformation of gold nanoparticles under compression

H Iteney, TW Cornelius, O Thomas, J Amodeo - Acta Materialia, 2024 - Elsevier
The influence of surface roughness on the mechanics of Au-faceted nanoparticles under
compression is investigated using molecular dynamics simulations. Results show an …

Cracking and toughening mechanisms in nanoscale metallic multilayer films: a brief review

Q Zhou, Y Ren, Y Du, D Hua, W Han - Applied Sciences, 2018 - mdpi.com
Nanoscale metallic multilayer films (NMMFs) have captured scientific interests on their
mechanical responses. Compared with the properties of monolithic films, multilayers …