Results 31 to 40 of about 169,796 (260)

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

Descriptions of reversed yielding in bending [PDF]

open access: yes, 2007
Existence of Bauschinger effect in bending-unbending of copper beams has been shown from experiment. In modelling of the Bauschinger effect, it is shown that a significant second plastic penetration can occur with the release of the moment required for ...
Rees, DWA
core   +1 more source

The thermodynamics of and strengthening due to co-clusters: general theory and application to the case of Al-Cu-Mg alloys [PDF]

open access: yes, 2009
Co-clusters in ternary or higher order metallic alloys are metastable structures involving two or more distinct alloying atoms that retain the structure of the host lattice. A thermodynamic model based on a single interaction energy of dissimilar nearest
Starink, M.J., Wang, S.C.
core   +1 more source

THE INFLUENCE OF ELECTROLYTIC PLASMA HARDENING ON THE PERFORMANCE CHARACTERISTICS OF WORKING PARTS OF AGRICULTURAL MACHINERY

open access: yesШәкәрім университетінің хабаршысы: Техника ғылымдар
: In this paper, we investigate the improvement of the operational and mechanical properties of 45 steel used in agricultural machinery by electrolytic plasma quenching (EPH).
N. E. Kadyrbolat   +4 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 INFLUENCE OF ELECTRON BEAM IRRADIATION ON THE TRIBOLOGICAL AND MECHANICAL PROPERTIES OF POLYTETRAFLUOROETHYLENE (PTFE) FOR ENGINEERING APPLICATIONS

open access: yesШәкәрім университетінің хабаршысы: Техника ғылымдар
The study demonstrates the significant effects of electron beam irradiation on the tribological and mechanical properties of polytetrafluoroethylene (PTFE).
K. Ormanbekov   +4 more
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

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