|KREJČÍ Lucie||VŠB - TU Ostrava|
|Spoluautoři HLAVATÝ Ivo|
The production of electric energy and heat belongs to the important branch of industry production in Czech Republic and worldwide as well. As important sources we can still nowadays consider coal power plants even if there exist nuclear plants and further alternative sources. Different temperatures of single plants components need use of different types of heat-resisting materials, which need to be welded. During the welding there are generated heterogeneous weld connections, which need much more attention than the connection of two identical materials. Within these connections from various structural phases, which are caused by properties of one or another basic material. One of suggested connection types, used with new thermal power plants, is heterogeneous weld connection of steel P92 (X10CrWMoVNb9-2) with steel 1.4918 (X6CrNiMo17-13-2), this means weld connection of austenitic steel and martensitic steel.