Partitioning of Ti and Kinetic Growth Predictions on the Thermally Grown Chromia Scale of a Polycrystalline Nickel-Based Superalloy
Published version
Peer-reviewed
Repository URI
Repository DOI
Change log
Authors
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.
Description
Keywords
40 Engineering, 4016 Materials Engineering
Journal Title
Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Conference Name
Journal ISSN
1073-5623
1543-1940
1543-1940
Volume Title
50
Publisher
Springer
Publisher DOI
Sponsorship
Royal Academy of Engineering (RAEng) (RF1516\15\20)
Engineering and Physical Sciences Research Council (EP/M005607/1)
Engineering and Physical Sciences Research Council (EP/M005607/1)
The authors would like to thank Rolls-Royce plc for the materials provision. The Oxford Atom Probe facility is funded by EPSRC (EP/M022803/1). This work was sponsored by the Rolls-Royce—EPSRC strategic partnership grant EP/M005607/1. Dr Galindo-Nava thanks the RAEng for their support by means of a research fellowship.