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Studies of precipitation using small‐angle neutron scattering (SANS)
Author(s) -
Messoloras S.,
Stewart R. J.
Publication year - 1988
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s0021889888004418
Subject(s) - nimonic , materials science , small angle neutron scattering , superalloy , neutron scattering , precipitation , crystallography , small angle scattering , phase (matter) , neutron diffraction , grain boundary , neutron , microstructure , scattering , crystal structure , metallurgy , chemistry , optics , nuclear physics , physics , organic chemistry , meteorology
Some earlier results are summarized which demonstrate the range of applications of SANS in the study of inhomogeneities. The size, number density, chemical composition (Ni 3 Al 0.6 Ti 0.4 ) and kinetics of the γ ′ precipitates in a Nimonic superalloy have been determined by SANS. The formation and growth of voids on the grain boundaries of a Nimonic superalloy have been followed by in situ SANS. The crystallographically aligned θ ′ precipitates in an Al–Cu crystal exhibit anisotropic SANS from which the edge lengths of the θ ′ platelets have been determined. Finally, SANS was used to study a very dilute concentration (20 p.p.m.) of the second phase particles in a silicon crystal.