INFLUENCE OF FATIGUE LOAD TO BEHAVIOUR OF WELDED JOINT ON ALLOYED STEEL FOR HIGH TEMPERATURE

The results of experimental investigations performed for the analysis of high-cycle fatigue properties in welded joint of steel for elevated temperatures and high pressure application are presented. Alloyed steel A-387 Gr. 11 Class 1 (SRPS C.7400) and its welded joint for high-temperature and under high-pressure application, had been tested. The analysis is performed by testing standard specimens in order to establish the effect of at it is necessary to determine and evaluate the effect of heterogeneity of microstructure and mechanical properties of welded joints on high-cycle fatigue properties .