Abstract
Phases present in a series of model ruthenium containing Ni-base single crystal superalloys were investigated in both as-solidified and heat-treated crystals. Three unusual Ru-rich phases have been identified including a L2 1 Heusler phase with a composition of Ru2AlTa, a B2 RuAl phase and a hep Re(Ru)-rich phase. These phases have been characterized in terms of the microstructure, composition, crystallography, three-dimensional morphology and distribution within the dendritic microstructure via X-ray, SEM and TEM analyses.
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Feng, Q., Nandy, T. K., Rowland, L. J., Tryon, B., Banerjee, D., & Pollock, T. M. (2004). New phases in ruthenium-containing single-crystal superalloys. In Proceedings of the International Symposium on Superalloys (pp. 769–778). https://doi.org/10.7449/2004/superalloys_2004_769_778
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