@inproceedings{cc565f0554d8429da6f729eff49abdf0,
title = "Microstructural characterisation of high temperature oxidation of nickel base superalloy RR1000 and the effect of shot-peening",
abstract = "High temperature oxidation resistance is becoming increasingly important to component life as operating temperatures increase. Additionally, shot-peening is used to help extend the service life of high-duty components through inducing compressive stresses in the surface. The effect of shot-peening on oxidation resistance has not been examined in detail, at least on recent high-strength turbine disc alloys such as RR1000. In this study, oxidation of a coarse-grained variant of RR 1000, with and without shot peening, has been characterised over a range of temperatures (700-800°C) for periods of time extending to 2000 hours. Microstructural characterisation of the oxide and underlying material was performed using a number of techniques. A duplex surface oxide, comprised largely of Cr2O3 covered by a thin top layer of TiO 2 was recorded in both surface conditions. Beneath this surface oxide was an alumina internal oxide, with the shot-peened condition exhibiting more numerous penetrations. The oxide growth kinetics in both alloy conditions were similar.",
keywords = "Ni-based superalloy, Oxidation, RR1000, Shot-peening",
author = "S. Cruchley and Taylor, {M. P.} and Evans, {H. E.} and P. Bowen and Hardy, {M. C.} and S. Stekovic",
year = "2012",
language = "English",
isbn = "9780470943205",
series = "Proceedings of the International Symposium on Superalloys",
pages = "751--758",
booktitle = "Superalloys 2012 - Proceedings of the 12th International Symposium on Superalloys",
note = "12th International Symposium on Superalloys, Superalloys 2012 ; Conference date: 09-09-2012 Through 13-09-2012",
}