Projects

Vliv výroby, parametrů zpracování a degradačních mechanismů na výsledné materiálové vlastnosti a životnost konstrukčních materiálů

SP2024/062

Within the project, partial research topics will be addressed: 1. The influence of production processes and subsequent processing on the resulting mechanical and technological properties of metallic and non-metallic materials; 2. Study of microstructural changes in technical materials; 3. Degradation mechanisms and their influence on the service life of metallic materials, which will be implemented at the workplaces of the Department of Materials Engineering and Recycling and the Department of Chemistry and Physico-Chemical Processes. The investigation teams and the involvement of individual members are described in the appendix. The key link for all research areas is the relationship between microstructure and useful properties depending on previous production processes and operating conditions when using optical and electron microscopy methods. The microstructural parameters will be supplemented by an evaluation of mainly mechanical, corrosion properties and technological properties. Individual researchers from the ranks of academic staff and doctoral students will participate in several research assets and are currently actively collaborating. However, the key to the successful solution of the project is also the involvement of the students of the subsequent master's studies, who will thus gain unique experience with research activities. In order to increase safety, reliability and extend the service life of operating parts of energy equipment, it is necessary to actively link microstructural characteristics with the results of destructive and non-destructive testing so that it is possible to predict the occurrence and development of defects in materials for structural elements of energy equipment in a timely manner. In the last decade, materials produced by additive methods are increasingly finding their place in key industrial applications. The project will therefore evaluate the utility and technological properties of the M300 alloy produced by the SLM method. For reasons of reducing the energy, economic and ecological burden, so-called recycled powders will also be used. The aim of this part is to determine the influence of the repeated use of the input raw material on the final product quality in terms of material characteristics. As part of the degrading action of gaseous atmospheres rich in chlorine, there is a risk of corrosion damage to structures that work in this environment. Therefore, as part of the project, one of the research activities will also aim to reveal the relationship between the concentration of chlorine in the air environment and the lifetime of structures that are exposed to these atmospheres. As a follow-up to the energy policy, topics related to the influence and degradation effect of hydrogen on selected types of materials will also be actively addressed, mainly processes leading to the failure of metallic materials due to the action of atomic hydrogen will be evaluated. The individual conditions of the thermomechanical processing of steels lead to significant microstructural changes, manifested also by changes in mechanical properties. Therefore, within the framework of the presented project, relationships between production procedures, thermomechanical processing, microstructural parameters and the resulting mechanical properties of selected steel qualities will be evaluated. However, as a result of the involvement of a number of students from the follow-up master's degree, the expansion of the above-mentioned topics from the areas of "Progressive metallic and other inorganic materials" and "Advanced materials for energy applications" is also expected in directions such as "Study of degradation processes in materials for applications in extreme conditions" , "Waste processing technology". All topics addressed, as well as the topics of diploma theses, which are closely related to the solution of the project, are in accordance with the Strategic Plan of FMT VŠB-TUO for the period 2021-2027. Companies, such as Třinecké železárny a.s., ČEZ or Štec SVT s.r.o., Vitesco, etc., showed interest in the topics described above. As part of the project, it is assumed that the students of the follow-up and doctoral studies will be involved in the preparation of samples from various types of technical materials, in the collection of experimental data and the interpretation of the obtained results as part of the realization of their final, or dissertations. The project envisages maximum use of the facilities of the Department of Materials Engineering and Recycling in the field of preparation of metallographic cuttings, 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. 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 pitting corrosion, and the degree of sensitization of the material in the thermally affected area 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 materials, the technical equipment of the Department of Materials Engineering and Recycling will be used, which enables static and dynamic tests to be carried out. For the solution of theses within the study programs Materials Engineering, Methods of Analysis for Chemical and Environmental Engineering and Biomechanical Engineering and dissertations within the study program Materials Science and Engineering, the above-mentioned experimental methods for the evaluation of structure and mechanical properties are necessarily. 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. Since the active involvement of master's degree students in the solution of the project is planned, the allocation of support will also have a positive effect on the quality of these students' final theses and thus contribute to the good name of the faculty. At the same time, it is assumed that the involvement of master's degree students in the SGS project will motivate them to further study in the doctoral study program. The proposed project is partially based on proven procedures, results and knowledge gained during the SGS projects from previous years.

2024

2024

Ministerstvo školství, mládeže a tělovýchovy

SGS

Specifický výzkum VŠB-TUO

Hlinka Josef Ing., PhD.