Vsevolod I. Razumovskiy
YOU?
Author Swipe
View article: The fingerprint method for analysis of thermal desorption spectra
The fingerprint method for analysis of thermal desorption spectra Open
The analysis of thermal desorption spectra (TDS) and the calculation of hydrogen detrapping activation energies rely on Gaussian peak deconvolution and Choo-Lee plot regression since 1982. However, this method imposes important assumptions…
View article: Hydrogen–Dislocation Interactions at Cryogenic Temperatures: Serrated Yielding and Embrittlement Resistance in High-Strength Austenitic Alloys
Hydrogen–Dislocation Interactions at Cryogenic Temperatures: Serrated Yielding and Embrittlement Resistance in High-Strength Austenitic Alloys Open
Comprehensive studies of hydrogen embrittlement in high-strength austenitic alloys under cryogenic conditions are scarce, leaving the combined effect of hydrogen charging and extreme temperatures largely unexplored. Given the demands of cr…
View article: The Fingerprint method for analysis of thermal desorption spectra
The Fingerprint method for analysis of thermal desorption spectra Open
The analysis of thermal desorption spectra (TDS) and the calculation of hydrogen detrapping activation energies rely on Gaussian peak deconvolution and Choo-Lee plot regression since 1982. However, this method imposes important assumptions…
View article: Hydrogen Trapping at Fe/Cu Interfaces
Hydrogen Trapping at Fe/Cu Interfaces Open
Copper (Cu) in steel production can be a residual element, causing challenges during steel processing, as well as an alloying element, improving corrosion resistance and providing hardenability by nanosized precipitates. For the transition…
View article: Grain boundary segregation for the Fe-P system: Insights from atomistic modeling and Bayesian inference
Grain boundary segregation for the Fe-P system: Insights from atomistic modeling and Bayesian inference Open
In this work we re-assess experimental data for grain boundary (GB) segregation of P in bcc Fe with thermodynamic and statistical methods. The data are based on Auger-Electron-Spectroscopy (AES) measurements which have provided P GB concen…
View article: High‐Throughput First‐Principles Calculations and Machine Learning of Grain Boundary Segregation in Metals
High‐Throughput First‐Principles Calculations and Machine Learning of Grain Boundary Segregation in Metals Open
The segregation of solute elements to defects in metals plays a fundamental role for microstructure evolution and the material performance. However, the available computational data are scattered and inconsistent due to the use of differen…
View article: Efficient descriptors and active learning for grain boundary segregation
Efficient descriptors and active learning for grain boundary segregation Open
Segregation of solutes to grain boundaries (GBs) is an important process having a large impact on mechanical properties of metallic alloys. In this work, we show how accurate density functional theory (DFT) calculations can be combined wit…
View article: Design of Laves phase-reinforced compositionally complex alloy
Design of Laves phase-reinforced compositionally complex alloy Open
Topologically close-packed (TCP) phases such as Laves phases are usually considered to harm the mechanical properties of classical superalloys for high-temperature applications. However, if an optimal fraction and size are designed, this s…
View article: Microstructure-Property Correlation and Its Evolution during Aging in an Al4.4Co26Cr19Fe18Ni27Ti5.6 High-Entropy Alloy
Microstructure-Property Correlation and Its Evolution during Aging in an Al4.4Co26Cr19Fe18Ni27Ti5.6 High-Entropy Alloy Open
The efficient energy use in multiple sectors of modern industry is partly based on the efficient use of high-strength, high-performance alloys that retain remarkable mechanical properties at elevated and high temperatures. High-entropy all…
View article: Hydrogen assisted intergranular cracking of alloy 725: The effect of boron and copper alloying
Hydrogen assisted intergranular cracking of alloy 725: The effect of boron and copper alloying Open
To overcome the Hydrogen embrittlement (HE) susceptibility of the standard Alloy 725 (Mod A), two alloys with minor alloying modifications with B (Mod B) and B+Cu (Mod C) were produced. Then, the intergranular cracking susceptibility was i…
View article: Thermodynamics of Vacancy Formation in the CoCrFeMnNi High Entropy Alloy from DFT Calculations
Thermodynamics of Vacancy Formation in the CoCrFeMnNi High Entropy Alloy from DFT Calculations Open
Aspects in Mining & Mineral Science Thermodynamics of Vacancy Formation in the CoCrFeMnNi High Entropy Alloy from DFT Calculations Vsevolod I Razumovskiy1*, Daniel Scheiber1, Oleg Peil1, Andreas Stark2, Michael Mayer1 and Gerald Ressel1 1M…
View article: Grain boundary segregation in Ni-base alloys: A combined atom probe tomography and first principles study
Grain boundary segregation in Ni-base alloys: A combined atom probe tomography and first principles study Open
Grain boundary engineering (GBE) plays an important role in the design of new polycrystalline materials with enhanced mechanical properties. This approach has been shown to be very effective in design of Ni-base alloys, where grain boundar…
View article: Modern Powder Metallurgy: Chemical Composition Design for Improved Heat Resistant Alloys
Modern Powder Metallurgy: Chemical Composition Design for Improved Heat Resistant Alloys Open
The modern approach to the design of heat-resistant metal alloys (HRAs) is analyzed, according to which the creep rupture characteristics of an alloy are mostly determined by the strength of interatomic bonding at grain boundaries (GBs) an…
View article: An In Situ Synchrotron Dilatometry and Atomistic Study of Martensite and Carbide Formation during Partitioning and Tempering
An In Situ Synchrotron Dilatometry and Atomistic Study of Martensite and Carbide Formation during Partitioning and Tempering Open
Precipitation hardened and tempered martensitic-ferritic steels (TMFSs) are used in many areas of our daily lives as tools, components in power generation industries, or in the oil and gas (O&G) industry for creep and corrosion resistance.…
View article: Hydrogen Trapping in bcc Iron
Hydrogen Trapping in bcc Iron Open
Fundamental understanding of H localization in steel is an important step towards theoretical descriptions of hydrogen embrittlement mechanisms at the atomic level. In this paper, we investigate the interaction between atomic H and defects…
View article: Ab Initio Study of Elastic and Mechanical Properties in FeCrMn Alloys
Ab Initio Study of Elastic and Mechanical Properties in FeCrMn Alloys Open
Mechanical properties of FeCrMn-based steels are of major importance for practical applications. In this work, we investigate mechanical properties of disordered paramagnetic fcc FeCr 10 – 16 Mn 12 – 32 alloys using density functional theo…
View article: New Cr-Ni-Base Alloy for High-Temperature Applications Designed on the Basis of First Principles Calculations
New Cr-Ni-Base Alloy for High-Temperature Applications Designed on the Basis of First Principles Calculations Open
We use ab initio calculations to analyze the influence of 4d and 5d transition metal alloying elements on cohesive properties of the bulk and a representative grain boundary in Cr within the framework of the Rice–Thomson–Wang approach. The…