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Partitioning of Ti and Kinetic Growth Predictions on the Thermally Grown Chromia Scale of a Polycrystalline Nickel-Based Superalloy
Ist Teil von
Metallurgical and materials transactions. A, Physical metallurgy and materials science, 2019-07, Vol.50 (7), p.3024-3029
Ort / Verlag
New York: Springer US
Erscheinungsjahr
2019
Quelle
Springer Journals
Beschreibungen/Notizen
Titanium is commonly added to nickel superalloys but has a well-documented detrimental effect on oxidation resistance. The present work constitutes the first atomistic-scale quantitative measurements of grain boundary and bulk compositions in the oxide scale of a current generation polycrystalline nickel superalloy performed through atom probe tomography. Titanium was found to be particularly detrimental to oxide scale growth through grain boundary diffusion.