Research in the field of high-entropy alloys has been surging since the 2010s. As widely
acknowledged, research interests in this field are largely sparked by the enormous …

Nanostructured metallic materials having nanocrystalline and ultrafine-grained structures
show exceptional mechanical properties, eg superior strength, that are very attractive for …

Grain boundaries (GBs) play an important role in the mechanical behavior of polycrystalline
materials. Despite decades of investigation, the atomic-scale dynamic processes of GB …

Metals can be processed to reach ultra-high strength, but usually at a drastic loss of ductility.
Here, we review recent advances in overcoming this tradeoff, by purposely deploying …

Conventional metals become harder with decreasing grain sizes, following the classical Hall-
Petch relationship. However, this relationship fails and softening occurs at some grain sizes …

Abstract Bulk nanostructured (ns)/ultrafine-grained (UFG) metallic materials possess very
high strength, making them attractive for high strength, lightweight and energy efficient …

Damage tolerance can be an elusive characteristic of structural materials requiring both high
strength and ductility, properties that are often mutually exclusive. High-entropy alloys are of …

Nanocrystalline (nc) materials can be defined as solids with grain sizes in the range of 1–
100 nm. Contrary to coarse-grained metals, which become more difficult to twin with …

Being lightweight, energy-efficient and environmentally benign, magnesium alloys present
great potential for various industrial applications. However, they possess relatively low …

In conventional metals, there is plenty of space for dislocations—line defects whose motion
results in permanent material deformation—to multiply, so that the metal strengths are …