Characterization of crystallographic evolution during creep deformation of a single crystal superalloy

Journal Article · Sun Jun 15 00:00:00 EDT 1997 · Scripta Materialia

DOI:https://doi.org/10.1016/S1359-6462(97)00035-3· OSTI ID:509217

Shollock, B A; Buffiere, J Y; Henderson, M B; McLean, M ^[1]; Curtis, R V ^[2]

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1. Imperial Coll of Science, Technology and Medicine, London (United Kingdom). Dept. of Materials
2. Guy`s and St. Thomas`s Hospital, London (United Kingdom). United Medical and Dental School

In the present study, the electron back scattering diffraction (EBSD) technique has been used to monitor the changes in microcrystallinity that occurs in specimens of SRR99 with complex crystal orientation when deformed to various creep strains and to failure at a range of stresses and temperatures. The current version of the anisotropic model has been used to simulate these deformations and predict the crystal rotations that will occur as a function of creep strain. The investigation compared the experimental and predicted extents and nature of crystal rotation. It also examined the wider issues of sources in variation of experimental measurements and the influence of the microstructural heterogeneities on the uniformity and consistency of crystal rotation determinations.

• OSTI ID: 509217
• Journal Information: Scripta Materialia, Vol. 36, Issue 12; Other Information: PBD: 15 Jun 1997
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CRYSTALLIZATION
CREEP
NICKEL BASE ALLOYS
MONOCRYSTALS
DEFORMATION
ORIENTATION
STRAINS
STRESSES
MATHEMATICAL MODELS
VALIDATION