Home > Publications database > Interfacial Reactions in the Bonding Zones of Explosively Welded Tantalum to Stainless Steel Sheets |
Journal Article | PUBDB-2021-01981 |
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2021
Deutsche Gesellschaft für Materialkunde
Frankfurt, M.
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Please use a persistent id in citations: doi:10.1002/adem.202001521
Abstract: The microstructure of the interfacial layers of explosively welded Ta/stainlesssteel (SS) and Ta/Cu/SS composites is investigated by X-ray synchrotron radiation,scanning (SEM), and transmission (TEM) electron microscopies. SEManalyses show that all interfaces between joined sheets undergo wave-shapeddeformation with the solidified melt regions situated preferentially in the wavevortexes and at the wave crests. These reaction regions show a nonuniformdistribution of phases in terms of chemical composition with elements belongingto both neighboring sheets. According to TEM analyses and synchrotron X-raymeasurements, the solidified melt regions between Ta and SS predominantlyconsist of brittle, amorphous, or nanocrystalline phases that are not observed inequilibrium phase diagrams. The microstructure of the solidified melt near theTa/Cu interface is dominated by Cu and Ta nanoparticles and small dendrites,typically less than 100 nm in diameter, whereas nanosized crystalline phases withcomplex chemical compositions are identified near the Cu/SS interface.
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