Issue №: 3(118)
The journal solves the problems of creation and improvement of machinery and technologies for agriculture: 131 - Applied Mechanics, 132 - Materials Science, 133 - Industrial Engineering, 141 - Power Engineering, Electrical Engineering and Electromechanics, 208 - Agricultural Engineering.
ANALYTICAL RESEARCH METHODS OF HOT DEFORMATION OF METALS
Ludmila Shvets – Ph.D., Associate Professor, Department of Agricultural Engineering and Technical Service Vinnytsia National Agrarian University (Sunny str., 3, Vinnytsia, Ukraine, 21008, e-mail: shlv0505@i.ua, https://orcid.org/0000-0002-4364-0126).
Kateryna Chmykh – is a first-year Postgraduate at the Vinnytsia National Agrarian University (3 Sonyachna St., Vinnytsia, 21008, Ukraine, e-mail: catherina099@gmail.com, https://orcid.org/0000-0001-8873-4436).
Hot processing of metals by pressure has a number of positive qualities: the constituent parts of the metal are distributed more evenly than before processing; grain sizes decrease, which leads to improved mechanical properties; the metal becomes denser. Pressure-treated metals have a fibrous structure.
The hot working process is one of the types of metal forming processes and it takes place at temperatures higher than the recrystallization temperature. During hot deformation, the metal is also strengthened (hot defamation), but it is completely removed in the process of recrystallization. With it, the plasticity of the metal is higher, and the resistance to deformation is approximately 10 times lower than during cold deformation.
Most metals have a recrystallization temperature that is half or one-third of the melting temperature of the metal. Therefore, we can say that when the metal is plastically deformed above the recrystallization temperature, but below the burning point, this is a hot process of metal deformation.
Elastic and then plastic deformation occur under the influence of external forces on the material. Pressure treatment of metals is possible due to their plasticity. A sign of elastic deformation is its reversibility, that is, its disappearance after removal of the load. The physical essence of elastic deformation is explained by the slight relative displacement of atoms in the crystal lattice, which return to their previous positions after the load is removed.
There are such methods of hot processing as: hot rolling, hot forging, hot stamping, hot drawing.
[1] Pulupec, M., Shvets, L. (2019). Characteristics and thermomechanical modes of aluminum alloys hot deformation. Current Problems of Transport: Proceedings of the 1st International Scientific Conference, Ternopil. Ternopil Ivan Puluj National Technical University and Scientific Publishing House «SciView». 195–204. [in English].
[2] Shvets, L, Trukhanska, O. (2022). Experimental studies of technological parameters of rolling of samples from aluminum alloys during isothermal deform. Norwegian Journal of development of the International Science, 80. 61–76. [in English].
[3] Shvets, L. (2021). Development of the device, restoration of places of landing bearings. Vibration in engineering and technology, 1 (100). 133–138. [in English].
[4] Shvets, L. (2020). Extension value, with hot rolled aluminum alloy specimens, round section in smooth rollers. Monography. Scientific foundations of modern engineering. Boston (USA). 234–240. [in English].
[5] Shvets, L. (2021). Restoration of body parts. Colloquium-journal, Poland, 8 (95). 44–53 DOI: 10.24412/2520-6990-2021-895-44-53. [in English].
[6] Shvets, L. (2020). The essence and possibility of the method of isothermal deformation. Slovak international scientific journal, 1 (42). 16–24. [in English].
[7] Aftandilyants, E.G., Zazymko, O.V., Pokhilenko, H.M. (2020). Tutorial. Technology of processing metals and alloys by pressure. NAU Publishing Center. [in Ukrainian].
[8] Budyak, R.V., Posvyatenko, E.K., Shvets, L.V., Zhuchenko, G.A. (2020). Construction materials and technologies. Tutorial. Vinnytsia National Agrarian University. [in Ukrainian].
[9] Popovych, V. (2010). Technology of structural materials and materials science. Book I. Lviv. [in Ukrainian].
[10] Popovych, V., Golubets, V. (2012). Technology of structural materials and materials science. Book II. Sumy. [in Ukrainian].
[11] Skryabin, S.A., Gunko, I.V., Shvets, L.V. (2012). Rolling of billets from aluminum alloys under conditions of isothermal and deformation close to it: monogaphy. Vinnytsia: PP "Edelweiss and K". [in Ukrainian].
About journal
The magazine "Engineering, Energy, Transport AIC" is included in the list of scientific professional editions of Ukraine on technical sciences
(Category "Б", Order of the Ministry of Education and Science of Ukraine dated 02.07.2020 №886)
According to the decision of National Council of Television and Radio Broadcasting of Ukraine from 25.04.2024 No. 1337 the scientific journal «Engineering, Energy, Transport AIC» has the ID of the Media R30-05173.
The journal "Engineering, Energy, Transport AIC" is indexed according to the following databases and catalogs:
Certificate of state registration of mass media: No. 21906-11806 P dated 03/12/2016.
Founder of the journal: Vinnytsia National Agrarian University
Type of publication: journal
Kind of publication: scientific
Publication status: domestic
Year of foundation: 1997
Periodicity: 4 times per year
Volume: 18-20 conv. print. sheet (А4)
ISSN: 2520-6168 (print version), (online version)
Language of publication: (mixed languages) Ukrainian, English
The sphere of distribution and category of readers: national, foreign, faculty, scientists, entrepreneurs.
The periodical edition is included to the List of scientific professional publications of Ukraine on technical sciences, approved by order of the Ministry of Education and Science of Ukraine in 05.16.2016, No. 515.
The journal "Engineering, Energy, Transport AIC" is included in the "Catalog of Ukrainian Publications".
Subscription to the journal can be issued in each post office. The subscription index is 99720.
Technology, energy, agriculture transport AIC is a scholarly professional journal with a long-standing history and stable academic tradition, reflecting the evolution of engineering and technical sciences within the agro-industrial sector of Ukraine.
The journal was founded in 1997 under the title Bulletin of Vinnytsia State Agricultural Institute. According to the Resolution of the Presidium of the Higher Attestation Commission of Ukraine dated September 11, 1997, the publication obtained the status of a professional scientific journal, which enabled the publication of the main results of doctoral and candidate dissertations in technical sciences. From its inception, the journal positioned itself as an academic platform for addressing current issues of mechanization, electrification, and technical support of agricultural production.
During 2001–2014, the journal was published under the title Proceedings of Vinnytsia National Agrarian University. Series: Technical Sciences (State Registration Certificate of Print Media KV No. 16644-5116 PR dated April 30, 2010). Throughout this period, a systematic approach to the selection and peer review of scientific manuscripts was established, the thematic scope of publications was expanded, and continuity of scientific directions as well as the development of sectoral engineering schools was ensured.
Since 2015, the journal has been published under its current title, Technology, energy, agriculture transport AIC (State Registration Certificate No. 21906-11806 R dated March 12, 2016). The change of title reflected the expansion of the journal’s thematic coverage and its orientation toward interdisciplinary research in mechanical engineering, energy systems, electrical engineering, transport technologies, automation, and digital solutions for the agro-industrial complex.
The journal consistently adheres to the principles of open science. All published materials are distributed under the Creative Commons Attribution 4.0 International License (CC BY 4.0), ensuring open access to research results provided proper attribution to the authors and the original publication is maintained.
At present, Technology, energy, agriculture transport AIC is an authoritative professional scientific journal (Category B), providing a platform for the publication of fundamental and applied research results, promoting the integration of education, science, and industry, and contributing to the advancement of engineering and technological support of the agro-industrial complex of Ukraine.
