229 KB28 KB200020242014Pouranvari, Majidštevilka:1letnik:48str. 113-118COBISSID:1032618ISSN:1580-2949URN:URN:NBN:SI:doc-T4SIGCENenInštitut za kovinske materiale in tehnologijeMateriali in tehnologijebondingisothermal solidificationizotermno strjevanjenickel superalloysnikljeve superzlitinespajanjesuperalloyssuperzlitineIsothermal solidification during transient liquid-phase bonding of GTD-111/Ni-Si-B/GTD-111| Izotermno strjevanje med spajanjem GTD-111/Ni-Si-B/GTD-111 s prehodno tekočo fazo|A prediction of the required time to ensure the completion of isothermal solidification (tIS) can serve as a first step toward the optimization of a transient-liquid-phase (TLP) process to achieve a eutectic-free joint. The objective of this study is to estimate the required bonding time to obtain an intermetallic-free joint centerline during the TLP bonding of a cast GTD-111 nickel-based superalloy using a Ni-4.5Si-3.2B (mass fractions, w/%) amorphous interlayer. Considering the solidification behaviour of the residual liquid, tIS could be predicted by a mathematical solution of the time-dependent diffusion equation based on Fick's second law. A prediction of the required time to ensure the completion of isothermal solidification (tIS) can serve as a first step toward the optimization of a transient-liquid-phase (TLP) process to achieve a eutectic-free joint. The objective of this study is to estimate the required bonding time to obtain an intermetallic-free joint centerline during the TLP bonding of a cast GTD-111 nickel-based superalloy using a Ni-4.5Si-3.2B (mass fractions, w/%) amorphous interlayer. Considering the solidification behaviour of the residual liquid, tIS could be predicted bya mathematical solution of the time-dependent diffusion equation based on Fick's second lawNapovedovanje potrebnega časa za zagotavljanje poteka izotermnega strjevanja (tIS) se lahko uporablja kot prvi približek za optimizacijo postopka spajanja s prehodno tekočo fazo (TLP) za doseganje spojev brez evtektika. Namen te študije je ugotoviti potreben čas spajanja za doseganje srednje linije spoja brez intermetalnih faz med TLP-spajanjem nikljeve GTD-111 superzlitine s strjevalno strukturo z uporabo Ni-4,5Si-3,2B (masni deleži, w/%) amorfne vmesne plasti. Z upoštevanjem vedenja preostale taline pri strjevanju je mogoče tIS napovedati z matematično rešitvijo časovne odvisnosti difuzijske enačbe, ki temelji na drugem Fickovem zakonuTEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaInštitut za kovinske materiale in tehnologije