@inproceedings{c59c6e0e1b08488085ac88262331f054,
title = "Determination of orientation and alloying effects on creep response and deformation mechanisms in single crystals of Ni-base disk superalloys",
abstract = "In this study, the effects of varying crystal orientation and composition on active deformation modes are explored for two different Ni-base disk alloys. Understanding these effects will allow for improved predictive modeling and consequently faster advancements in Ni-base alloy development. In order to investigate these effects, compression creep tests were conducted on [001] and [110] oriented single crystal specimens of the disk alloys ME3 and ME501, at different stress/temperature regimes. At 760 °C and below, a prominent creep anisotropy exists between the two orientations, with the [110] oriented samples exhibiting superior creep strength. At 815 °C, the creep anisotropy disappeared between the two orientations. Through bright field scanning transmission electron microscopy, it was determined that the existence of creep anisotropy is a result of differences in deformation modes between the different orientations and alloy compositions. Results of phase field modeling in which the interaction of dislocations with realistic precipitate structures is also conducted to further advance predictive creep deformation models.",
keywords = "Compression creep, Deformation mechanisms, Dislocation activity diagram, Ni-based Superalloy, STEM",
author = "Smith, {T. M.} and Duchao, {L. V.} and T. Hanlon and A. Wessman and Y. Wang and Mills, {M. J.}",
note = "Funding Information: MJM and YW acknowledge the support of NSF and the DMREF program under grant # 1534826. TMS and DL acknowledge the support of GE Aviation for their support of this work through the GE University Strategic Alliance (USA) program. TMS acknowledges Lee Casalena for helping create and format figures.; 13th International Symposium on Superalloys, SUPERALLOYS 2016 ; Conference date: 11-09-2016 Through 15-09-2016",
year = "2016",
doi = "10.1002/9781119075646.ch62",
language = "English (US)",
series = "Proceedings of the International Symposium on Superalloys",
publisher = "Minerals, Metals and Materials Society",
pages = "579--588",
editor = "Mark Hardy and Eric Huron and Uwe Glatzel and Brian Griffin and Beth Lewis and Cathie Rae and Venkat Seetharaman and Sammy Tin",
booktitle = "SUPERALLOYS 2016 - Proceedings of the 13th International Symposium on Superalloys",
}