On the effect of Ti on Oxidation Behaviour of a Polycrystalline Nickel-based Superalloy

24 Oct 2018 · Pedrazzini S., Rowlands B. S., Turk A., Parr I. M. D., Hardy M. C., Bagot P. A. J., Moody M. P, Galindo-Nava E., Stone H. J. ·

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.

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On the effect of Ti on Oxidation Behaviour of a Polycrystalline Nickel-based Superalloy

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