Celem prowadzonych badań była ocena jakościowa złączy spawanych ze spoinami pachwinowymi w konfiguracji rura kompozytowa-płaskownik oraz określenie wpływu energii liniowej spawania podczas spawania złączy. Złącze spawane złożone z rury kompozytowej 3R12/4L7 oraz płaskownika ze stali X6CrNi18-10 zostało poddane badaniom makroskopowym i mikroskopowym, następnie wykonano pomiar twardości metodą Vickersa, a także przeprowadzono technologiczną próbę rozciągania. Uzyskane wyniki świadczą o wysokiej jakości połączenia spawanego oraz wpływie zastosowanej energii liniowej spawania na poszczególne obszary złącza spawanego.
The assessment of susceptibility to hot cracking under forced deformation conditions in welded joints of Inconel 617 alloy Mgr inż. Natalia Konieczna; dr hab. inż. Janusz Adamiec, prof. PŚl-Politechnika Śląska.
Nickel alloys, despite their good strength properties at high temperature, are characterized by limited weldability due to their susceptibility to hot cracking. So far, theories describing the causes of hot cracking have focused on the presence of impurities in the form of sulphur and phosphorus. These elements form low-melting eutectic mixtures that cause discontinuities, most frequently along solid solution grain boundaries, under the influence of welding deformations. Progress in metallurgy has effectively reduced the presence of sulphur and phosphorus compounds in the material, however, the phenomenon of hot cracking continues to be the main problem during the welding of nickel-based alloys. It was determined that nickel-based alloys, including Inconel 617, show a tendency towards hot cracking within the high-temperature brittleness range (HTBR). There is no information on any structural changes occurring in the HTBR. Moreover, the literature indicates no correlations between material-related factors connected with structural changes and the amount of energy delivered into the material during welding.This article presents identification of correlations between these factors contributes to the exploration of the mechanism of hot cracking in solid-solution strengthened alloys with an addition of cobalt (e.g. Inconel 617). The article was ended with development of hot cracking model for Ni-Cr-Mo-Co alloys.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.