Dmytro Orlov
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View article: Exploring the evolution of magnesium oxidation mechanisms by density functional theory
Exploring the evolution of magnesium oxidation mechanisms by density functional theory Open
Magnesium (Mg) is an abundant metal which has been used in aviation, medicine, hydrogen energy storage, etc. However, Mg can be rather reactive, and therefore an improved understanding of corrosion and oxidation mechanisms can enhance the …
View article: Local High Pressure Torsion: a process for creating targeted heterogeneities in metallic materials
Local High Pressure Torsion: a process for creating targeted heterogeneities in metallic materials Open
In the light of recent developments in the design of structural materials, micro-architected heterogenous-structure metals are considered among most structurally efficient. In this work, a new technique for Local High Pressure Torsion (L-H…
View article: Exploring the Evolution of Magnesium Oxidation Mechanisms by Density Functional Theory
Exploring the Evolution of Magnesium Oxidation Mechanisms by Density Functional Theory Open
View article: Tailored pseudopotentials for magnesium surface core level shift calculations
Tailored pseudopotentials for magnesium surface core level shift calculations Open
In x-ray photoelectron spectroscopy (XPS), identifying the origin of peaks in the spectrum can be guided by theory calculations. With density functional theory (DFT), using pseudopotentials, one can obtain the difference in photoelectron e…
View article: Geometry of plastic deformation in metals as piecewise isometric transformations
Geometry of plastic deformation in metals as piecewise isometric transformations Open
Deformation mechanisms of crystalline solids has been the subject of research for more than two centuries. The theory of dislocations dominates modern views but still has significant gaps demanding the introduction of additional concepts f…
View article: Initial oxidation of low index Mg surfaces investigated by SCLS and DFT
Initial oxidation of low index Mg surfaces investigated by SCLS and DFT Open
Magnesium (Mg) is a metal having a high structural efficiency and a very high chemical reactivity at the same time. Its potential areas of applications include the automotive industry, biomedicine, and energy storage and generation. Furthe…
View article: Surface sliding revealed by operando monitoring of high-pressure torsion by acoustic emission
Surface sliding revealed by operando monitoring of high-pressure torsion by acoustic emission Open
High-pressure torsion (HPT) is widely used as a key method for microstructure control through deformation processing across a broad range of materials. However, certain gaps in process control impact its efficacy. In this study, we investi…
View article: On the optimisation of phase fractions in harmonic structure materials
On the optimisation of phase fractions in harmonic structure materials Open
Materials with heterogeneous microstructures architected across several scales are becoming increasingly popular in structural applications due to unique strength–ductility balance. One of the most popular 3D-architected structure designs …
View article: Initial Oxidation of Low Index Mg Surfaces Investigated by Scls and Dft
Initial Oxidation of Low Index Mg Surfaces Investigated by Scls and Dft Open
View article: Surface Sliding Revealed by Acoustic Emission Operando Monitoring of High-Pressure Torsion
Surface Sliding Revealed by Acoustic Emission Operando Monitoring of High-Pressure Torsion Open
View article: Grain-level mechanism of plastic deformation in harmonic structure materials revealed by high resolution X-ray diffraction
Grain-level mechanism of plastic deformation in harmonic structure materials revealed by high resolution X-ray diffraction Open
Materials with heterogeneous microstructures have been reported to have an attractive combination of strength and ductility. This is attributed to synergistic strengthening effects from the difference in strength of fine- and coarse-graine…
View article: A Polycrystalline Pd Surface Studied by Two-Dimensional Surface Optical Reflectance during CO Oxidation: Bridging the Materials Gap
A Polycrystalline Pd Surface Studied by Two-Dimensional Surface Optical Reflectance during CO Oxidation: Bridging the Materials Gap Open
Industrial catalysts are complex materials systems operating in harsh environments. The active parts of the catalysts are nanoparticles that expose different facets with different surface orientations at which the catalytic reactions occur…
View article: Polarisation Development at the European Spallation Source
Polarisation Development at the European Spallation Source Open
To meet the ever-increasing user demand, eleven of the fifteen European Spallation Source (ESS) instruments under construction aim to offer polarised neutrons for user experiments. They include an imaging instrument, a SANS instruments, tw…
View article: Development and first results of a magnetic sample environment for polarized neutron imaging of thin metal sheets
Development and first results of a magnetic sample environment for polarized neutron imaging of thin metal sheets Open
Polarized neutron imaging brings the great advantage of analyzing bulk magnetic properties with good spatial resolution. The technique is based on the interaction of the neutron spin with magnetic samples or free magnetic fields and observ…
View article: Grain-Level Mechanism of Plastic Deformation in Harmonic Structure Materials Revealed by High-Resolution X-Ray Diffraction
Grain-Level Mechanism of Plastic Deformation in Harmonic Structure Materials Revealed by High-Resolution X-Ray Diffraction Open
View article: Stress partitioning in harmonic structure materials at the early stages of tensile loading studied in situ by synchrotron X-ray diffraction
Stress partitioning in harmonic structure materials at the early stages of tensile loading studied in situ by synchrotron X-ray diffraction Open
In situ X-ray diffraction was employed to gain insight into the tensile deformation behavior of harmonic structure (HS) nickel. HS consists of a continuous network of fine grains encompassing islands of coarse grains. With the aid of a new…
View article: Potential Links between Precipitation and Anthrax Outbreak at North-West Siberia
Potential Links between Precipitation and Anthrax Outbreak at North-West Siberia Open
West Siberia is a region subject to fast warming and unstable precipitation regime. In 2016, the most devastating anthrax outbreak in seventy years occurred in the northern part of the region. A working hypothesis suggests that permafrost …
View article: Oxygen-sensitive nanoparticles reveal the spatiotemporal dynamics of oxygen reduction during magnesium implant biodegradation
Oxygen-sensitive nanoparticles reveal the spatiotemporal dynamics of oxygen reduction during magnesium implant biodegradation Open
View article: Separation of XRD peak profiles in single-phase metals with bimodal grain structure to analyze stress partitioning
Separation of XRD peak profiles in single-phase metals with bimodal grain structure to analyze stress partitioning Open
Materials with bimodal grain size distributions have an attractive combination of strength and ductility. Harmonic structure materials are a category of bimodal-structure materials with a specific microstructure design. The deformation mec…
View article: Mechanics of accelerated strain hardening in harmonic-structure materials
Mechanics of accelerated strain hardening in harmonic-structure materials Open
Harmonic-structure (HS) design is one of the most efficient in the family of architected gradient-structure materials recently attracting increasing attention in global material science community due to leading structural performance chara…
View article: Harmonic structure, a promising microstructure design
Harmonic structure, a promising microstructure design Open
The harmonic structure is a recently introduced concept paving the way for engineering metallic materials to achieve excellent mechanical performance. They consist of soft coarse-grained regions (Core) that are three-dimensionally surround…
View article: Reversible Electroporation and Post-Electroporation Resting of Thai Basil Leaves Prior to Convective and Vacuum Drying
Reversible Electroporation and Post-Electroporation Resting of Thai Basil Leaves Prior to Convective and Vacuum Drying Open
Pretreatment by reversible electroporation followed by resting (storage under saturated moisture at 21 ± 2 °C) was evaluated for modification of the properties of dried and rehydrated Thai basil leaves. The treated leaves were dried by con…
View article: Enhancing the Mechanical Properties of Biodegradable Mg Alloys Processed by Warm HPT and Thermal Treatments
Enhancing the Mechanical Properties of Biodegradable Mg Alloys Processed by Warm HPT and Thermal Treatments Open
In this study, several biodegradable Mg alloys (Mg5Zn, Mg5Zn0.3Ca, Mg5Zn0.15Ca, and Mg5Zn0.15Ca0.15Zr, numbers in wt%) were investigated after thermomechanical processing via high-pressure torsion (HPT) at elevated temperature as well as a…
View article: Improving Texture and Microstructure Homogeneity in High-Purity Ta Sheets by Warm Cross Rolling and Annealing
Improving Texture and Microstructure Homogeneity in High-Purity Ta Sheets by Warm Cross Rolling and Annealing Open
The evolution of texture and microstructure uniformity in high-purity tantalum (Ta) sheets during 135° warm cross rolling (WCR) was analyzed in detail. X-ray diffraction suggested that relatively uniform ‘ideal’ deformation texture distrib…
View article: Multimodal ex vivo methods reveal that Gd-rich corrosion byproducts remain at the implant site of biodegradable Mg-Gd screws
Multimodal ex vivo methods reveal that Gd-rich corrosion byproducts remain at the implant site of biodegradable Mg-Gd screws Open
Extensive research is being conducted on magnesium (Mg) alloys for bone implant manufacturing, due to their biocompatibility, biodegradability and mechanical properties. Gadolinium (Gd) is among the most promising alloying elements for pro…
View article: Improvement of structural efficiency in metals by the control of topological arrangements in ultrafine and coarse grains
Improvement of structural efficiency in metals by the control of topological arrangements in ultrafine and coarse grains Open
View article: <i>Operando</i> Reflectance Microscopy on Polycrystalline Surfaces in Thermal Catalysis, Electrocatalysis, and Corrosion
<i>Operando</i> Reflectance Microscopy on Polycrystalline Surfaces in Thermal Catalysis, Electrocatalysis, and Corrosion Open
We have developed a microscope with a spatial resolution of 5 μm, which can be used to image the two-dimensional surface optical reflectance (2D-SOR) of polycrystalline samples in operando conditions. Within the field of surface sci…
View article: Peridynamic Modelling of Harmonic Structured Materials Under High Strain Rate Deformation
Peridynamic Modelling of Harmonic Structured Materials Under High Strain Rate Deformation Open
This paper applies the peridynamic continuum mechanics theory on a new type of material known as harmonic-structured materials. Using the Peridigm software, rapid uniaxial elongation is simulated on a peridynamic model of a thin bimodal ha…
View article: Nanotomographic evaluation of precipitate structure evolution in a Mg–Zn–Zr alloy during plastic deformation
Nanotomographic evaluation of precipitate structure evolution in a Mg–Zn–Zr alloy during plastic deformation Open
View article: Non-monotonic evolution of surface roughness in a stainless steel during cold deformation
Non-monotonic evolution of surface roughness in a stainless steel during cold deformation Open
In this study, polished and unpolished sheet samples of austenitic stainless steel 316L were tensile strained to investigate the evolution of surface roughness based on Sa- and Ra characteristics. In polished steel sheets, surface roughnes…