Zobrazeno 1 - 10
of 230
pro vyhledávání: '"A V, Stetsenko"'
Publikováno v:
Litʹë i Metallurgiâ, Vol 0, Iss 3, Pp 41-44 (2024)
It has been shown that the effect of structural inheritance in casting eutectic cast irons can be explained from the standpoint of nanostructured crystallization of foundry alloys. Proposed is a mechanism of structural heredity when casting eutectic
Externí odkaz:
https://doaj.org/article/595b303840144bbaa45d2f9b4ae42a99
Publikováno v:
Litʹë i Metallurgiâ, Vol 0, Iss 3, Pp 57-60 (2024)
A nanostructural mechanism of secondary transformations in the structure of gray cast iron is proposed. First, structureforming nanocrystals of austenite, ferrite, cementite and graphite are formed from elementary nanocrystals of iron and graphite, f
Externí odkaz:
https://doaj.org/article/dacf0284738c4e8aad3f0106152b9a38
Publikováno v:
Litʹë i Metallurgiâ, Vol 0, Iss 2, Pp 36-39 (2024)
A nanostructural mechanism for recrystallization of binary aluminum and tin bronzes has been developed. First, structure-forming nanocrystals of α-phases, β-phases and γ-phases are formed from elementary nanocrystals of copper, aluminum, tin and t
Externí odkaz:
https://doaj.org/article/16bf940400bc47aea9729a8e5e7c14a9
Publikováno v:
Litʹë i Metallurgiâ, Vol 0, Iss 2, Pp 12-16 (2024)
Based on thermodynamic calculations, it is shown that heating and cooling of metals and alloys are reversible, equilibrium processes. Based on thermodynamic calculations, it is shown that melting and crystallization of metals and alloys are also reve
Externí odkaz:
https://doaj.org/article/b298062b11244308b3fe59d35576644a
Autor:
S. V. Stetsenko
Publikováno v:
Право і безпека, Vol 93, Iss 2, Pp 96-105 (2024)
An effective investigation of any criminal offence is not possible without forming a forensic profile, which includes information about the criminal’s identity. The article examines the scientific developments on the issues related to the forens
Externí odkaz:
https://doaj.org/article/90fc946796fb4f85bbfe4cb4b8d0550e
Publikováno v:
Litʹë i Metallurgiâ, Vol 0, Iss 1, Pp 32-35 (2024)
It is shown that the main modifying intermetallides of primary microcrystals of aluminum alloys do not satisfy the principle of structural and dimensional correspondence. Nonmetallic inclusions and intermetallides cannot be centers of crystallization
Externí odkaz:
https://doaj.org/article/f1df6741125346a9811a0076edc49055
Publikováno v:
Litʹë i Metallurgiâ, Vol 0, Iss 2, Pp 29-31 (2024)
A nanostructural mechanism of structural stability during remelting of foundry binary alloys has been developed. This mechanism is determined by the stability of the centers of crystallization of microcrystals of α‑phases and β‑phases. It is sh
Externí odkaz:
https://doaj.org/article/90224bae9eba434e99220c1234f0584b
Publikováno v:
Litʹë i Metallurgiâ, Vol 0, Iss 1, Pp 13-15 (2024)
A nanostructural mechanism for recrystallization of carbon steels has been developed. First, structure‑forming nanocrystals of austenite, ferrite and cementite are formed from elementary nanocrystals of iron and graphite, free iron and carbon atoms
Externí odkaz:
https://doaj.org/article/7aeed959057748ada33d54bb5fa12b55
Publikováno v:
Litʹë i Metallurgiâ, Vol 0, Iss 4, Pp 52-55 (2023)
It is shown that the open pores of the crystal lattices of iron, manganese, titanium, cobalt cannot contain hydrogen, oxygen, nitrogen and carbon atoms. In solid solutions of alloys, hydrogen and oxygen atoms are present in the adsorbed state. Nitrog
Externí odkaz:
https://doaj.org/article/2604aa375999400f916ea35f1c9c1cb8
Publikováno v:
Litʹë i Metallurgiâ, Vol 0, Iss 4, Pp 48-51 (2023)
It is shown that the main modifying phases cannot serve as centers of crystallization of α‑phase microcrystals during solidification of magnesium‑manganese alloys.The superheating modification of these alloys is an adsorption‑nanostructural pr
Externí odkaz:
https://doaj.org/article/ec0639adb30642abba5ac131c23c94d2