Abstract Al–Zn alloys having different Zn contents of 2, 5, 10 and 30 wt% were processed by high-pressure torsion (HPT) to produce ultrafine-grained (UFG) materials. Microstructural features these UFG investigated using depth-sensing indentations, focused ion beam (FIB), scanning electron microscopy (SEM) differential calorimetry (DSC). Emphasis was placed on the microstructure evolution with Z...

Tetrataenite (L10-FeNi) is a promising candidate for use as permanent magnet free of rare-earth elements because its favorable properties such high magnetic anisotropy and coercivity. We report on structural Fe49Ni49Ti2 alloy after severe plastic deformation (SPD) by pressure torsion (HPT) technique. The main characteristics bulk HPT materials were determined. As result deformation, all samples...

High-entropy alloys (HEAs), a novel type of materials with high configurational entropy, have aroused huge interest due to promising range functional properties including biocompatibility. In this study, the high-pressure torsion (HPT) method was implemented as mechanical alloying route synthesize biocompatible nanostructured HEAs bcc structure. An equiatomic quinary TiNbZrTaHf HEA successfully...

A CoCrFeNiMnTi0.1 high-entropy alloy (HEA) was subjected to high-pressure torsion (HPT) processing under 6.0 GPa pressure up to 10 turns. XRD results reveal that the initial and HPT-processed microstructures consist of a single fcc phase and there is no evidence for creating a new phase and the occurrence of a phase transformation during HPT processing. It is shown that there is a gradual evolu...

We investigated the effect of nano-structuring by high-pressure torsion (HPT) on irradiation performance Eurofer-97. Material was deformed to shear strains from 0 ∼230, and then exposed Fe3+ doses 0.01 0.1 displacements-per-atom (dpa). Nanoindentation hardness increases monotonically with deformation, for undeformed material. For both damage levels, less hardening is observed in severely This m...

A filamentary composite elaborated by cold drawing was processed by High Pressure Torsion (HPT). The nanostructure resulting from this severe plastic deformation (SPD) was investigated thanks to scanning electron microscopy, transmission electron microscopy, X-ray diffraction and 3D atom probe. Although the mutual solubility of Cu and Fe is extremely low at room temperature in equilibrium condi...

This report is aimed at giving an overview of the significance novel and innovative microstructural microscopic characterization techniques for bulk nanostructured metals processed by severe plastic deformation, specifically high-pressure torsion (HPT). In practice, relaxation behavior upon heating 316L stainless steel CoCrFeNi high-entropy alloy was characterized in-situ neutron diffraction me...

A thermodynamic analysis of an operational 315 MW supercritical steam power plant (SPP) using the actual data is performed to assess the plant performance and identify the sites of energy losses and exergy destructions in each component of the plant. Various performance parameters such as component energy and exergy efficiencies, energy loss rate, exergy destruction rate, improvement potential ...

A Pb-62% Sn two-phase eutectic alloy was processed by high-pressure torsion (HPT) and stored at room temperature (RT) to investigate the occurrence of self-annealing. The microstructural characteristics and mechanical properties were recorded during self-annealing using scanning electron microscopy, tensile testing and nanoindentation. Processing by HPT produces a weakening effect but storage a...

Co-Zr amorphous alloys exhibit soft magnetic properties, whereas the Co-rich crystalline phases in this alloy system displayed a hard behavior. In study, an initial two-phase composite with overall composition of 75 at.% Co and 25 Zr was processed by high-pressure torsion (HPT), effects severe plastic deformation subsequent thermal treatment on composite’s structural evolution its properties we...