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arXiv · 1810.10444

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

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

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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S. Pedrazzini, B. S. Rowlands, A. Turk, I. M. D. Parr, M. C. Hardy, P. A. J. Bagot, M. P Moody, E. Galindo-Nava, H. J. Stone. 2018-10-24. On the effect of Ti on Oxidation Behaviour of a Polycrystalline Nickel-based Superalloy. https://arxiv.org/abs/1810.10444

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