Projects

Vliv výrobních parametrů a podmínek provozování na mikrostrukturu a užitné vlastnosti kovových materiálů

SP2023/049

Within the project, partial research topics will be addressed to: 1. The influence of the technologies of forming processes and heat treatment on the microstructure of steels, 2. Microstructural stability of steels and welded joints during long-term exposure in power plants, 3. Surface and corrosion characteristics of selected alloys, which will be studied at the workplaces of the Department of Materials Engineering and Recycling, the Department of Metallurgical Technologies, the Department of Chemistry and Physico-Chemical Processes and CPIT. The investigation teams and the involvement of individual members are described in the appendix. A key link for all research areas is the study of the microstructure depending on previous production processes and operating conditions using optical and electron microscopy methods. Microstructural parameters will be linked to evaluation of mechanical and corrosion properties. Individual researchers from the ranks of academic staff and Ph.D. students will participate in several research areas and are currently actively collaborating. The study of the combined effect of the chemical composition of the material, the parameters of the previous plastic deformation and the cooling rate from the forming temperature on the type and kinetics of individual phase transformations allows, through the optimization of the parameters of the final cooling, to very effectively influence the resulting structural and mechanical properties of hot-formed products. In order to increase safety, reliability and extend the service life of operating energy equipment, a detailed study of the microstructural stability of steels and welded joints, which represent the most critical parts of energy equipment components, is necessary. The surface and corrosion characteristics of titanium alloy surface treatments prepared by 3D printing is a research area with applications in medicine. The evaluation of selected stainless steels against an environment simulating biological aspects is related to the issue of microbiological corrosion in systems for distribution and storage of hot water with a temperature below 60 °C. Companies such as Třinecké železárny a.s., ČEZ or Daikin have shown interest in the topics described above. As part of the project, it is assumed that the graduate and postgraduate students will be involved in the preparation of samples from various types of structural materials, in the collection of experimental data and the interpretation of the obtained results as part of the realization of their masters and dissertation thesis. The project envisages maximum use of the facilities of the Department of Materials Engineering and Recycling in the field of preparation of metallographic samples, light microscopy and digital image analysis. In the electron microscopy laboratories, scanning electron microscopes (SEM) and transmission electron microscopes (TEM) will be used, including EDX (energy dispersive spectroscopy), EBSD (backscattered electron diffraction) techniques and special equipment for the preparation of specimens. Deformation and heat treatment procedures will also be used to modify the microstructure of progressive technical materials. The experiments will be carried out on the non-contact dilatometric module of the Gleeble 3800-GTC heat deformation simulator, which is unique in the Czech Republic. Special CCT software from DSI and commercial program Origin (for numerical derivation of curves) will be used to evaluate the results. The equipment of the corrosion laboratory will be used to study the corrosion resistance of advanced technical materials, including resistance to hydrogen embrittlement. Corrosion resistance will be studied using electrochemical tests in an environment simulating biological corrosion, and the degree of sensitization of the material in the heat affected zones of the weld joints will also be evaluated using the EPR-DL method. Hydrogen embrittlement will be assessed by the SSRT (Slow Strain Rate Test) method, hydrogen diffusion characteristics will be determined by the permeation method. The project will include the evaluation of the mechanical properties of progressive technical materials. To characterize the properties of the materials, the technical equipment of the Department of Materials Engineering and Recycling and the CPIT workplace, which enables static and dynamic tests to be performed, will be used. The above-mentioned experimental evaluation methods are used for solving diploma theses within the study program Materials Engineering (specialization Progressive Technical Materials) and Metallurgical Engineering (specialization Forming Progressive Metal Materials) and dissertations within the study program Materials Science and Engineering, Metallurgical Engineering and related study programs structure and mechanical properties necessary. The investigative teams and the involvement of individual members are described in more detail in the appendix. The obtained results will make it possible to deepen the knowledge and skills of students and teachers in the field of studying the structure and properties of advanced materials, including the interpretation of the obtained results in high-impact journals and proceedings of international conferences. The results of the project solution will contribute to a further increase in the quality of the pedagogical process. The proposed project is partially based on proven procedures, results and knowledge gained during the SGS projects from previous years.

2023

2023

Ministerstvo školství, mládeže a tělovýchovy

SGS

Specifický výzkum VŠB-TUO

Váňová Petra doc. Ing., Ph.D.