Institute of Materials and Machine Mechanics
Influence of hydrogen on deformation behavior and fracture of complex concentrated alloys
Advanced materials and material design
Name of the supervisor
Ing. Juraj Lapin, DrSc.
Materiálovotechnologická fakulta STU
Hydrogen is a key priority of the European strategy for clean energy and metallic materials are a key pillar of expected technical solutions and innovations in its production, storage, distribution and end-use. PhD thesis will be focused on investigating the influence of hydrogen on the deformation behaviour and fracture of Co-Cr-Fe-Ni type complex concentrated alloys (CCA). The PhD student will participate in the metallurgical preparation of alloys with the required chemical composition, characterization of their microstructure and investigation of the effect of hydrogen on their deformation behaviour at room and low temperatures. He/she will investigate the deformation behaviour of CCA during tensile, compressive, fracture toughness and impact fracture toughness tests. Using the finite element method and the ANSYS program, he/she will simulate the deformation behaviour of the investigated CCAs, determine the critical local stresses and critical local deformations needed for crack initiation and propagation. Numerical calculations will be verified experimentally. The candidate is required to have experimental skills, knowledge of applied mechanics, basic knowledge of materials science, knowledge of mechanical testing of materials, knowledge of numerical calculation methods as well as a good knowledge of English.