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 …

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 …

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 …

The mechanical properties of nanocrystalline materials are reviewed, with emphasis on their
constitutive response and on the fundamental physical mechanisms. In a brief introduction …

Low absolute strength becomes one major obstacle for the wider applications of low/no rare-
earth (RE) containing Mg alloys. This review firstly demonstrates the importance of grain …

Classical Hall–Petch relation for large grained polycrystals is usually derived using the
model of dislocation pile-up first investigated mathematically by Nabarro and coworkers. In …

Friction stir processing was applied to a magnesium alloy to generate various grain sizes
with the same intense basal texture. Subsequent tensile deformation along two orthogonal …

In recent years, near-nano (submicron) and nanostructured materials have attracted
increasingly more attention from the materials community. Nanocrystalline materials are …

Internal Friction in Metallic Materials Page 1 materials science Internal Friction in Metallic
Materials A Handbook MS Blanter IS Golovin H. Neuhäuser H.-R. Sinning Page 2 Springer …

Severe plastic deformation (SPD) has established itself as a potent means of producing bulk
ultrafine grained and nanostructured materials. It has given rise to burgeoning research that …