AP19178097 "Improvement the technology of electrolytic-plasma carburizing based on numerical simulation of the interaction of metal with the vapor-gas shell"

Supervisor:

Relevance:

The idea of the project is based on improving the technology of electrolytic-plasma carburizing of low-carbon steels based on numerical simulation of the interaction of metal with a vapor-gas shell formed between a liquid anode and a metal cathode, as well as studying the features of diffusion saturation and structural-phase transformation in steels, depending on the processing method of electrolyte-plasma carburizing. It is proposed to study the mechanisms of accelerated diffusion of alloying elements in processed materials during electrolytic-plasma processing. A mathematical model and an algorithm for calculating the kinetics of diffusion saturation with carbon during cathodic electrolytic-plasma heating will be developed. The main regularities of diffusion saturation, structural-phase transformations during electrolytic-plasma carburizing of low-carbon steels will be established. Based on the obtained results, an effective method of electrolytic-plasma saturation to harden the surface of machine parts and mechanisms made of low-carbon steels will be developed.

Target:

Improving the technology of electrolytic-plasma carburizing of low-carbon steels based on numerical simulation of the interaction of metal with vapor-gas shell formed between a liquid anode and a metal cathode, and also studying the features of diffusion saturation and structural-phase transformation in steels depending on the electrolytic-plasma carburizing’s technological mode.

Expectation:

The features of the CVC and CTC of cathode heating will be studied and the regularities of heat exchange between the cathode and the vapor-gas shell will be established. The mechanism of formation of a vapor-gas shell between the liquid anode and the metal cathode during electrolytic-plasma treatment is determined. The mechanism of accelerated diffusion of alloying elements in processed materials during various types of electrolytic-plasma processing will be determined. The diffusion coefficient of carbon in low carbon steels will bedetermined, taking into account their individual and mutual influence. Structural transformations in low-carbon steels during electrolytic-plasma carburizing will be studied. Based on the results obtained, within the framework of this project, at least 2 (two) articles will be published in journals from the first three quartiles by impact factor in the Web of Science database or with a CiteScore percentile in the Scopus database of at least 50. It is also planned to apply for obtaining a patent of the Republic of Kazakhstan for an invention or utility model. The results of the research will be important from the point of view of scientific research in condensed matter physics and materials science, as well as practical use in the creation of materials for machine and aircraft building, nuclear energy, and the military-industrial complex. The use of resource-saving electrolytic-plasma technology, which will ensure an increase in the service life of machine parts and tools in machine-building production, will lead to a decrease in depreciation costs. Consequently, the results of the studies carried out under the project will make a significant contribution to the development of mechanical engineering in the Republic of Kazakhstan. The use of the proposed technology of electrolytic-plasma hardening of structural and tool steels will significantly improve the quality of steel products and reliability in operation, as well as significantly save on materials, since the main part of the products can be made from cheaper and more common steels produced in Kazakhstan. Due to the increase in the projected service life (operability) of products, a positive economic effect is also expected.

Result:

o Features of current-voltage and current-voltage characteristics of cathode heating will be studied
o The mechanism of formation of a vapor-gas shell between the liquid anode and the metal cathode during electrolytic-plasma treatment is determined
o The energy of ions formed in the vapor-gas shell and bombarding the active electrode surface depending on the mode of electrolytic-plasma carburizing will be calculated
o The optimal mode of electrolyte-plasma carburizing will be established
o The diffusion coefficient of carbon in low-carbon steels and its dependence on the mode of electrolytic-plasma carburizing will be determined
o A mathematical calculation by the finite element method of the process of saturation of austenite and ferrite with carbon during electrolytic plasma processing will be carried out
o Based on the obtained results, an effective method of electrolytic-plasma saturation will be developed to harden the surface of machine parts and mechanisms made of low-carbon steels

Study Team Members

Fullname: Мухаметов Елдос Мухтарович

Scopus Id: 56703359900

Researcher Id: GLS-2714-2022

ORCID: 0000-0001-7818-8160

Additionally:
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Fullname: Рахадилов Бауыржан Корабаевич

Scopus Id: 55539741700

Researcher Id: AAD-3744-2020

ORCID: 0000-0001-5990-7123

Additionally:
Director of LLP "PlasmaScience", a specialist with a scientific background in the field of condensed matter physics and physical materials science. General scientific and pedagogical experience - 13 years. The scientific activity of the scientific consultant of the project is related to research on surface-plasma interactions, obtaining protective coatings, modifying materials with concentrated energy flows. He successfully defended his doctoral dissertation in 2014 on the topic "Electrolytic-plasma nitriding of surface layers of high-speed steels". He is the owner of the Grant "The best teacher of the university - 2018". He is a holder of the State Scientific Scholarship for talented young scientists who have made an outstanding contribution to the development of science and technology for 2013-2014 and 2018-2019. He published 4 monographs, 5 textbooks and more than 150 scientific publications, including 40 articles in foreign publications included in the Web of Science and Scopus database, 20 copyright certificates for inventions. Hirsch index according to the Scopus scientometric database - 10, Web of Science – 7.