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 …

Severe plastic deformation (SPD) is effective in producing bulk ultrafine-grained and
nanostructured materials with large densities of lattice defects. This field, also known as …

Ultrafine-grained materials display almost no strain hardening, an enhanced strain rate
sensitivity and grain boundary offsets during plastic deformation. It is expected that …

Mechanical strength and electrical conductivity are the most important properties of
conducting metallic materials used in electrical engineering. Today, there is a growing need …

The microstructure of grain boundaries (GBs) in the commercial NdFeB-based alloy for
permanent magnets has been studied. It is generally accepted that the unique hard …

Severe plastic deformation (SPD) can induce various phase transformations. After a certain
strain, the dynamic equilibrium establishes between defects production by an external force …

Ultrafine-grained (UFG) materials with grain sizes in the submicrometer or nanometer range
may be prepared through the application of severe plastic deformation (SPD) to bulk coarse …

The important benefits of ultrafine-grained (UFG) alloys for various applications stem from
their enhanced superplastic properties. However, decreasing the temperature of …

The important class of grain boundary (GB) complexions includes the few nanometer thick
layers having composition which strongly differs from that of the abutting grains. Such GB …

Severe plastic deformation through the high-pressure torsion (HPT) method was applied to
pure aluminum with a wide range of purity levels such as 99%(A1100), 99.5%(A1050) …