Research leader name
Prof. Dr. George (György) Kaptay
The ME Materials Science Research Group has worked within the Department of Metallurgy of the University of Miskolc since 1994. Initially, the group was involved in laser surface treatment (surface alloying, metal/ceramic composites and monotectic surface layers). Laser experiments were carried out at BAYATI and Fraunhofer Institute (Aachen, Germany). The technology developed for the monotectic surface coating was patented by the group.
Downloads
The research team then turned its attention to amorphous metals. The processes and the phases formed in the FeSiBNi amorphous alloy prepared by rapid cooling at the MTA-MFA were investigated by DSC, XRD, SEM+EDS and TEM. A method was developed to correctly evaluate the DSC curves for continuous heating (the evaluation software supplied with the equipment was inadequate). It was shown that nanoscale phases were formed during the heat treatment.
In the next period, the research group focused on producing and developing Cu-based bulk amorphous alloys. Various techniques were used to produce bulk amorphous alloys: the first method involved centrifugal casting to produce wedge-based specimens and determine the maximum thickness of the amorphous material. The second method uses continuous and pulsed mode Nd-YAG laser deposition to create an amorphous surface layer. For the third method, a Cu-based amorphous powder was prepared by ball milling.
In 2000, the Materials Science Research Group joined the MICAST (Microstructure Formation in Casting of Technical Alloys under Diffusive and Magnetically Controlled Convective Conditions) program funded by the European Space Agency (ESA) and, from 2010, the CETSOL (Columnar-to-Equiaxed Transition in SOLidification Processing) program. Both programs are carried out in a broad international collaboration with research groups and companies from Germany, France, the UK, the USA, Ireland, Canada, Romania, Sweden, Austria and other countries. Both programs are currently running with ESA funding until the end of 2027.
Members of the HUN-REN-ME Materials Science Research Group are currently carrying out fundamental research on “Science and technology of certain metallic nanomaterials” in the following main thematic areas:
- Modelling of nano-materials,
- Development of metallic amorphous nano-composites,
- Development of nanostructured steels.
