The grain size, and therefore the grain boundary density, is known to play a major role in the
flow stress of metallic materials. A linear relationship to the inverse of the square root of the …

Multi-material components featuring high performance and design flexibility have attracted
considerable attention, providing solutions to meet the performance demands of high-end …

Conventional material processing approaches often achieve strengthening of materials at
the cost of reduced ductility. Here, we show that high-pressure and high-temperature …

The trade-off of strength and ductility of metals has long plagued materials scientists. To
resolve this issue, great efforts have been devoted over the past decades to develo** a …

Large lattice expansion/contraction with Li+ intercalation/deintercalation of electrode active
materials results in severe structural degradation to electrodes and can negatively impact …

The strength of nanocrystalline and nanotwinned metals stops increasing or even starts
decreasing when their grain size or twin thickness is below a critical size—a phenomenon …

Abstract The transition from Hall-Petch (HP) to inverse Hall-Petch (IHP) behaviors
associated with grain size reduction has been recognized for over two decades. However …

Auxetic metamaterials with programable negative Poisson's ratio (NPR) are of great
significance in engineering applications. These materials, however, are either mechanically …

Twins and 9R phase (a structure containing a high density of stacking faults) have played
important roles in simultaneously improving strength and strain hardening capacity of low-to …

The interfacial stress-affected zone (ISAZ), characterized by a stress gradient maximizing at
the interface, is considered a key factor in determining the mechanical properties of …