Results 21 to 30 of about 417,880 (332)
Factors and mechanisms of nanomodification cement systems in the technological life cycle
The paper presents an analysis of the kinetics of heterogeneous processes and patterns of solid formation to substantiate factors and technological methods for nanomodifying the structure and properties of cement-based composites.
Artamonova Olga +2 more
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Nanoscale gold pillars strengthened through dislocation starvation [PDF]
It has been known for more than half a century that crystals can be made stronger by introducing defects into them, i.e., by strain-hardening. As the number of defects increases, their movement and multiplication is impeded, thus strengthening the ...
Greer, Julia R., Nix, William D.
core +1 more source
The paper presents the results of diffraction stress measurement in Al/SiC composite and in 2124T6 aluminum alloy during the in situ tensile test. The main aim of the work is to observe the stress values for different stages of tensile test for the ...
Gadalińska Elżbieta +4 more
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This paper assesses the effect of various values of detonation velocity on the quality of the bond zone, and thus the properties of bimetal zirconium (Zr 700) - steel (P355NL). The research was carried out for as-bonded welds, i.e.
Prażmowski M.
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FEATURES OF FORMATION OF FUNCTIONAL COVERINGS AT ELECTROSPARK MODIFYING OF METAL MATERIALS
Results of a research of influence of materials of the alloying electrodes at electrospark modifying of steel products on phase structure of the formed coverings and blankets are presented.
D. N. Korotaev, E. V. Ivanova
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Impact of Volume and Surface Heat Treatment on the Structure and Properties of Steel 30HGSA
The work presents the results of a comparative study of volumetric and surface heat treatment impact on the structural-phase states, hardness, and wear resistance of steel 30HGSA. Surface hardening was conducted by the electrolyte-plasma method.
Б.К. Рахадилов +6 more
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A review of x-ray spectral evolution in Crab pulsar [PDF]
Pravdo et al (1997) claimed that the phase resolved x-ray spectrum in Crab pulsar (PSR B0531+21) shows a spectral hardening at the leading edge of the first peak of its integrated profile; this was a new and unexpected result.
Lundgren +8 more
core +2 more sources
In order to predict correctly stress-strain curve for tensile tests at elevated and cooling temperatures, a modification of a Johnson–Cook (J-C) model and a new method to determine (J-C) material parameters are proposed.
Duc-Toan Nguyen +4 more
doaj +1 more source
Introduction. The total mass of some grey cast iron details in construction and road machines reaches 60%. Cylinder blocks, parts of braking systems, flywheels, etc. are made of cast-iron.
V. E. Ovsyannikov, V. I. Vasilyev
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The aim of this paper was to establish the causes of the heterogeneity of the chemical composition of the metal obtained by the LC technology. The powdered raw material was made from a monolithic alloy, which was fused by the SLM, the initial raw ...
Vadim I. ALEKSEEV +2 more
doaj +1 more source

