The influence of additional deformation heat treatments (DHTs), implemented by two regimes: (1) annealing and small high-pressure torsion (HPT) at room temperature (RT) (2) HPT elevated to 10 turns RT, has been studied on the microstructure, mechanical properties electrical conductivity ultrafine-grained (UFG) Al-0.53Mg-0.27Zr (wt.%) alloy structured RT. As is shown, both types DHT lead a subst...

The service life of technical components is often limited by the fatigue strength deployed materials. accumulative roll bonding (ARB) process, which has ability to produce ultrafine‐grained (UFG) laminated metal composites with tailored properties, offers a unique method significantly enhance materials that are cyclically loaded in three‐point bending. Detailed microstructural investigations re...

As a kind of cost-efficient hydrogen storage materials with high hydrogen capacity and light weight, Mg-based alloys have attracted much attention. This review introduces an effective technique in producing bulk ultrafine-grained (UFG) Mg alloys and promoting its hydrogen storage property, namely, equal-channel angular pressing (ECAP). This paper briefly describes the technical principle of ECA...

Dendritic microstructures are frequently observed in as-solidified refractory high-entropy alloys (RHEAs), and their homogenization typically requires a long-term heat treatment at extremely high temperatures. High-pressure torsion (HPT) has been shown to be capable of mixing immiscible systems room temperature, therefore represents promising technique for homogenizing dendritic RHEAs. In this ...

The Unitary Fermi Gas (UFG) is one of the most strongly interacting systems known to date, as it saturates the unitarity bound on the quantum mechanical scattering cross section. The UFG corresponds to a two-component Fermi gas in the limit of short interaction range and large scattering length, and is currently realized in ultracold-atom experiments via Feshbach resonances. While easy to defin...

In this work, we study the influence of surface properties ultrafine grained (UFG) and coarse (CG) titanium on morphology, viability, proliferation differentiation osteoblast-like MG-63 cells. Wet chemical etching in H2SO4/H2O2 NH4OH/H2O2 solutions was used for producing surfaces with varying topography, composition wettability. The topography morphology have been studied by scanning electron m...

Inconel 718 was successfully processed by multi-pass high-pressure sliding (MP-HPS) for production of ultrafine-grained structures in rods with upsized dimensions. An (UFG) structure an average grain size ~ 140 nm developed through rotation 45°. Tensile testing at 1073 K initial strain rate 2x10-2 s−1 led to superplastic elongations more than 400%. A relation is established between hardness and...

Parallel Tubular Channel Angular Pressing (PTCAP) process is a novel recently developed severe plastic deformation (SPD) method for producing ultrafine grained (UFG) and nanograined (NG) tubular specimens with excellent mechanical and physical properties. This process has several advantageous compared to its TCAP counterparts. In this paper, a fine grained AZ91 tube was fabricated via multi pas...

Two different types of shear bands generate in ultrafine-grained (UFG) CoCrFeMnNi high-entropy alloys deformed at 77 K, i.e. commonly-observed low angle grain boundary (LAGB) type and unusual twin-coupled type. Twin-coupled exhibit a misorientation 56–67° with the matrix, contrast to LAGB band 6–12°. Both annealing twins deformation can act as precursor for bands, where dislocation accumulation...

A 0.4C-2Si-1Cr-1Mo steel with an ultrafine elongated grain (UFEG) structure and an ultrafine equiaxed grain (UFG) structure was fabricated by multipass caliber rolling at 773 K and subsequent annealing at 973 K. A static three-point bending test was conducted at ambient temperature and at 77 K. The strength-toughness balance of the developed steels was markedly better than that of conventionall...