Vliv tepelného zpracování na vlastnosti svarového spoje oceli P92, svařeného metodou 111

Abstract

Bachelor thesis consists of two parts. The first part describes creep resistant steels, mostly steel P92. These martensitic steels are used to production the most tired components in the power plants with ultra super critical steam parameters. There are described mechanical, chemical and physical properties, microstructure and welding parameters of the martensitic steels. Welding method 111, which is used in the experiment, is described here. There are described welding and post weld heat treatment (PWHT) of the experimental steel plates in the experimental part. Experimental welded joints were subjected to the destructive and non-destructive tests. The evaluations of results of destructive and non-destructive tests after different PWHT are described in the end of the thesis.