Issue №: 4(119)
The journal deals with the problems of vibration technologies and machines, mathematical methods of vibration process studies, information on design and technological development, presents teaching and methodological aspects of teaching in the Higher School of Applied Sciences, where vibration machines and technologies are studied.
INFLUENCE OF HOT ROLLING PARAMETERS ON THE QUALITY AND MICRO- AND MACROSTRUCTURE OF COMPRESSOR BLADES BLANKS
Stadnik Mykola – Doctor of Technical Sciences, Associate Professor, Professor of the Department of Electric Power, Electrical Engineering and Electromechanics of Vinnytsia National Agrarian University (3, Sonyachna St., Vinnytsia, 21008, Ukraine. e-mail: stadnik_mykola@vsau.vin.ua ).
Trukhanska Olena – Candidate of Technical Sciences, Associate Professor of the Department of Agricultural Engineering and Technical Service of Vinnytsia National Agrarian University (St. Soniachna, 3, Vinnytsia, Ukraine, 21008, e-mail: yaropud77@gmail.com).
Bubnovska Iryna – Candidate of Technical Sciences, Senior Lecturer at the Department of Mathematics, Physics and Computer Technologies of Vinnytsia National Agrarian University (St. Soniachna, 3, Vinnytsia, Ukraine, 21008, e-mail: biana25100@gmail.com).
Kupchuk Ihor – Candidate of Technical Sciences, Associate professor, Associate Professor of the Department of Engineering Mechanics and Technological Processes in the Agricultural Industry, Faculty of Engineering and Technology, Vinnytsia National Agrarian University (3, Sonychna St., Vinnytsia, 21008, Ukraine, e-mail: kupchuk.igor@i.ua; http://orcid.org/0000-0002-2973-6914).
The paper investigates the influence of the main parameters of hot rolling—namely the initial deformation temperature, roll rotational speed, degree of deformation, and groove geometry—on the formation of quality, profile accuracy, and the micro- and macrostructure of billets intended for compressor blades of gas turbine engines. It is established that for heat-resistant steels and titanium alloys, the decisive factor is the rational combination of deformation temperature and rolling speed, as these parameters govern the intensity of recrystallization, grain refinement, accumulation of plastic deformation, and thermal gradients in the metal–roll contact zone.
Mathematical modeling of the stress–strain state was performed using the finite element method with a “round–oval” groove scheme, which made it possible to trace the evolution of strain intensity, energy density, and temperature fields at different stages of billet passage through the groove. Analytical and experimental studies demonstrated that an optimal range of temperature and deformation degree ensures a reduction in structural inhomogeneity by 20–35%, lowers the risk of central defect formation, and improves the macrostructure due to the intensification of dynamic recrystallization.
A comparative analysis of hot and cold rolling showed that hot deformation significantly reduces force loads, enables processing of heat-resistant and complex-alloyed materials, and promotes the formation of a uniform equiaxed grain structure. In contrast, cold rolling provides high profile accuracy but is accompanied by increased hardness and residual stresses, which may limit further plastic deformation. Based on the obtained results, recommendations are formulated for selecting hot rolling regimes aimed at increasing the service life and operational reliability of compressor blades.
1. Ghosh, S., & Chatterjee, A. (2018). Hot Working Behavior of Titanium Alloys. Springer, [in English].
2. Hosford, W. F., & Caddell, R. M. (2014). Metal Forming: Mechanics and Metallurgy. Cambridge University Press. [in English].
3. Zhou, J., & Lin, J. (2019). FE Modelling of Thermomechanical Rolling Processes for Aerospace Alloys. International Journal of Mechanical Sciences, 2019. [in English].
4. Semiatin, S. L. (2015). Metallic Materials: Thermomechanical Processing. ASM International. [in English].
5. Reed, R. C. (2008). The Superalloys: Fundamentals and Applications. Cambridge University Press. [in English].
6. Utsunomiya, H., & Yoshida. (2017). “Microstructural Evolution in Hot Rolling of Ti-6Al-4V Alloy.” Journal of Materials Processing Technology. [in English].
7. Matviychuk V.A., Bubnovska I.A. (2015). Modeling of temperature and deformation fields in hot deformation processes. DSMA. [in Ukrainian].
8. Kryshchuk N.G., Gunko I.V. (2019). Deformation processes in shaped gauges during hot rolling. Pressure processing of materials. [in Ukrainian].
9. Skryabin S.A., Kryshchuk N.G., Gunko I.V. (2011). Thermal processes and thermal deformations during rolling of blanks. Processing of materials by pressure. [in Ukrainian].
About the journal
The journal "Vibrations in Engineering and Technologies" is included in the list of technical scientific publications of Ukraine
(Category "B", Order of the Ministry of Education and Science of Ukraine dated July 2, 2020 No. 886)
Old version of the site: http://vibrojournal.vsau.edu.ua/
The journal "Vibrations in Engineering and Technology" is indexed by the following databases and catalogs:
The certificateof massmedia State registration:kv no 16643-5115 from 30.04.2010 .
Founder of the journal: Vinnytsia National Agrarian University
The journal is devoted to highlighting current issues in engineering, mechanical engineering, and technological processes, including the study of dynamic and oscillatory phenomena in technical systems, the application of mathematical methods for process modeling and analysis, as well as the presentation of results of design-engineering and technological developments. Particular attention is given to the study of vibration processes and their application in modern technologies.
The purpose of the scientific journal “Vibrations in Engineering and Technologies” is to disseminate the results of fundamental and applied research in the field of engineering sciences aimed at developing theoretical foundations and practical approaches to the design, analysis, and improvement of machines, materials, and technological processes, including the use of vibration and oscillatory effects in various sectors of production.
The publication is focused on the formation of a modern scientific and informational environment for the effective exchange of research results, support of innovative development, and implementation of advanced technical solutions in industry, agro-industrial production, and related fields.
The journal promotes the development of interdisciplinary research, the integration of modern engineering approaches, and the enhancement of the efficiency of technological processes and technical systems, including through the rational use of vibration phenomena.
Objectives of the Scientific Journal
To achieve its stated purpose, the journal addresses the following key objectives:
dissemination of results of fundamental and applied scientific research in the fields of mechanics, mechanical engineering, technological processes, machine dynamics, and equipment, as well as in areas related to the application of vibration phenomena in engineering and technologies;
promotion of research aimed at the creation and improvement of machines, mechanisms, and technological equipment based on oscillatory and vibration processes;
support for the implementation of modern technological solutions focused on improving productivity, energy efficiency, and reliability of technical systems;
обеспечение scientific exchange of research results among research institutions, higher education establishments, and industrial enterprises;
development of interdisciplinary cooperation among researchers in the fields of mechanics, materials science, material processing technologies, and automation of technological processes;
dissemination of modern scientific achievements and advanced technologies related to the application of vibration processes in production and technical systems.
Publisher Vinnytsia National Agrarian University
In June 1994 the 2nd International Scientific and Technical Conference "Application of vibrations for technological purposes" was organized on the basis of Vinnytsia State Agricultural Institute. Leading experts in this field, noting the significant contribution to the school of Vibration Engineering under the leadership of P. S. Bernyk, proposed to create a professional all-Ukrainian scientific and technical journal "Vibration in engineering and technology..The journal was foundedat Vinnytsia State Agricultural Institute and P.S. Bernyk was elected to be the chief editor .
For all these years (since 1994) theJournal "vibration in engineering and technology" published 119 issues wherestudy of vibration effects, the creation of progressive energy saving technologies and equipment for their implementation were highlighted.
Currently Ihor Kupchuk, Candidate of Technical Sciences, Associate professor, Associate Professor of the Department of Engineering Mechanics and Technological Processes in the Agricultural Industry Faculty of Engineering and Technology Vinnytsia National Agrarian University is the chief editor of the "Vibrations in engineering and Technology"
The journal "Vibration in Engineering and technology", which has no analogues on the territory of Ukraine, is well known abroad.
