Micro-and nanolattices can achieve simultaneously both lightweight and ultra-high strength
due to a combination of resilient architecture and enhanced mechanical properties of small …

Multiscale dislocation dynamic simulations are systematically carried out to reveal the
dislocation mechanism controlling the confined plasticity in coated micropillar. It is found that …

The strength of aluminum alloy 2025 (duralumin) micro-pillars is known to be significantly
higher than that of pure Al micro-pillars of comparable sizes since the precipitates present …

The dislocation-induced shielding effect on the crack-tip depends on not only the number of
dislocations but also the distance of dislocations from the crack-tip. The former is closely …

In dislocation-mediated plasticity of crystalline materials, discrete dislocation dynamics
(DDD) methods have been widely used to predict the plastic deformation in a number of …

A recent letter from us has indicated that the tensile proof strength of polycrystalline Ag micro-
wires, with thicknesses in the range from 20 to 50μm, depends strongly on the specimen …

Background The size effect and deformation instability exhibited by materials at the micro-
and nano-scale constrain the development and application of miniaturized devices …

Present experiments and computational simulations furnish a fundamental background to
the understanding of plastic flow across sample sizes. It is shown that self-organized …

Both the homogeneous boundaries and the heterophase interfaces play important roles in
crystalline plasticity as they often serve as obstacles for dislocation motion, as well as …

To characterize the torsion stress relaxation in micro scale, the relation between the inelastic
strain rate and the geometrically necessary dislocations (GNDs) is proposed. Based on the …