Results 21 to 30 of about 66,380 (265)

POLYMINERAL COMPOSITE BINDERS FOR FOAM CONCRETE: FEATURES OF HYDRATION AND HARDENING

open access: yesВестник СибАДИ, 2020
Introduction. The paper devotes to the features of hydration and hardening of polymineral composite binders. The authors carry out the complex research of the phase composition, hydration and structure formation processes of hardened composite binders ...
V. V. Voronov, E. S. Glagolev
doaj   +1 more source

Phase Stability and Microstructure Evolution of Solution-Hardened 316L Powder Feedstock for Thermal Spraying

open access: yesMetals, 2018
A solution-hardening of AISI 316L stainless-steel powder was conducted. The expansion of the crystal lattice and a strong increase in the nanoindentation hardness confirm the successful diffusion of carbon and nitrogen in the interstices.
Thomas Lindner   +2 more
doaj   +1 more source

Changes of Material Properties of Silumin During Age-Hardening

open access: yesCommunications, 2012
Simple phenomenological description of age-hardening kinetics of supersaturated solid solution is presented using the sum of exponential functions with negative arguments containing rate constants whose temperature dependence is described by the ...
Jan Kohout
doaj   +1 more source

Dynamics of Dislocations in Smectic A Liquid Crystals Doped with Nanoparticles

open access: yesCrystals, 2019
Edge dislocations are linear defects that locally break the positional order of the layers in smectic A liquid crystals. As in usual solids, these defects play a central role for explaining the plastic properties of the smectic A phase. This work focuses
Patrick Oswald
doaj   +1 more source

Factors and mechanisms of nanomodification cement systems in the technological life cycle

open access: yesMagazine of Civil Engineering, 2022
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
doaj   +1 more source

Possibilities of Reclamation Microwave-Hardened Molding Sands with Water Glass

open access: yesArchives of Metallurgy and Materials, 2014
W pracy przedstawiono wyniki badań nad określeniem możliwości prowadzenia skutecznej regeneracji zużytych mas formierskich ze szkłem wodnym utwardzanych w procesie nagrzewania mikrofalowego.
Stachowicz M., Granat K.
doaj   +1 more source

The Hardening in Alloys and Composites and Its Examination with a Diffraction and Self-Consistent Model

open access: yesFatigue of Aircraft Structures, 2018
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
doaj   +1 more source

Mechanical Properties of Zirconium/Steel Bimetal Fabricated by Means of Explosive Welding at Varied Detonation Velocities

open access: yesArchives of Metallurgy and Materials, 2014
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.
doaj   +1 more source

Impact of Volume and Surface Heat Treatment on the Structure and Properties of Steel 30HGSA

open access: yesҚарағанды университетінің хабаршысы. Физика сериясы, 2021
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
doaj   +1 more source

Chemical heterogeneity as a factor of improving the strength of steels manufactured by selective laser melting technology

open access: yesЗаписки Горного института, 2020
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

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