Processing by twist extrusion was used to produce copper billets with a hexagonal cross-
section. A special feature of the billets is their gradient microstructure owing to a specific …

Grain size gradient materials exhibit superior strength and ductility due to their multiscale
microstructures. A dislocation-based multiscale model was applied to study the effect of …

Surface mechanical attrition treatment (SMAT) was used to generate a gradient
microstructure in commercial grade magnesium. Positron annihilation lifetime spectroscopy …

The surface treatment on AISI304 stainless steel plate was successfully carried out by
explosive impacting technique. We have obtained a high mechanical performance and …

Burnishing is a unique strengthening approach to improve the strength of surface layer and
remains the ductility of the interior of metallic materials. In this work, burnishing treatment …

Synergetic strengthening induced by plastic strain incompatibility at the interface, and the
resulting extra geometrically necessary dislocations (GNDs) generated during plastic …

A high ductility and extra strain hardening are achieved in the age-hardened Al alloy but
without strength improvement via the introduction of a gradient nanostructured layer. The …

Composite materials usually possess a severe deformation incompatibility between the soft
and hard phases. Here, we show how this incompatibility problem is overcome by a novel …

By means of the surface mechanical-attrition treatment (SMAT), a nano-crystalline surface
layer of about 25 µm was prepared on the iron plate. The grain size exhibits a gradient …

Processing heterogeneous microstructures, especially the so-called harmonic structures
consisting of soft core and hard shell regions, is an efficient way to achieve a strength …