Heterostructured (HS) materials are a new class of materials that are composed of
heterogeneous zones with dramatically different (> 100%) mechanical or physical …

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 …

Thermal insulation under extreme conditions requires materials that can withstand complex
thermomechanical stress and retain excellent thermal insulation properties at temperatures …

Due to their unique microstructures and chemical compositions, high-entropy alloys (HEAs)
exhibit remarkable mechanical properties, such as high strength, excellent ductility and …

We review some of the factors that influence the hardness of polycrystalline materials with
grain sizes less than 1 µm. The fundamental physical mechanisms that govern the hardness …

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

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

For 35 years, ab initio molecular dynamics (AIMD) has been the method of choice for
modeling complex atomistic phenomena from first principles. However, most AIMD …

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 …

Grain refinement could effectively enhance yield strength of Mg alloys according to the well-
known Hall-Petch theory. For decades, many studies have been devoted to the factors …