Background. Improvement of the methodology for computational analysis residual stresses in structural elements reactor is an integral part work when extending service life NPP power units.
 Objective. Determine value technological stress arising baffle a VVER-1000 during welding and postweld heat treatment according to austenitizing mode. To evaluate effect considering dependence transfer ...

Impact testing methodology is findings the applications for determining the impact strength of the different materials. Oneof the most important characteristics of structural steels, toughness is assessed by the Charpy V-notch impact test. The objective of the research was to maximize the impact toughness by selecting various combinations of Charpy Impact test parameters. In this paper, experim...

the effects of steel wire patenting process parameters on very fine interlamellar spacing in the pearlitic steel wire were investigated and the optimized condition of the process was achieved. in this work, the initial nanopearlitic structure was obtained in a 0.72 wt% carbon steel wire before the wire drawing process. the results were the minimum interlamellar spacing of 35 nm and maximum ulti...

The interrelationship between chemical composition, heat treatment parameters, and phase transformation, microstructural evolution the mechanical properties of austempered steel was studied. Two samples with different percentage composition carbon 0.56 0.76 were used for study. They austentized at respective temperatures 8000C, 8400C, 9000C 9600C 30 minutes. thereafter quenched using bitumen-pa...

Novel oxide particles composed of Ti, rare-earth metal and Zr was found by the present authors to promote formation acicular ferrite (AF), but their effect on toughness has not yet been clarified. Therefore, influence AF low carbon steel investigated using Ti-Rare earth metal-Zr-killed (TRZ) Al-killed (AL) steels in this study. Dominant microstructure AL is bainite forming block/packet structur...

Microstructures and mechanical properties after spheroidizing annealing (SA) of GCr15 bearing steel with without an alternating magnetic field (AMF) were investigated. It was found that the application AMF at austenitizing stage promoted dissolution carbides, accelerated process increased hardness quenched sample. After isothermal annealing, carbides in sample more uniformly distributed became ...

Although extensive aging and strain (bake hardening, BH) studies have been carried out on dual-phase steels, the behavior of dual matrix structure (DMS) ductile iron (DI), as a potential way to improve its mechanical properties, has not addressed until now. This research was designed study DI with ferrite-martensite structure. DMS-DI martensite volume fraction 30% produced by intercritical aust...