Abstract
The evolution of γ’-precipitate morphology in the creep-exposed, single-crystal, Ni-base superalloy SC16 was studied by small-angle neutron scattering (SANS). The scattering curves observed show that the originally cuboidal precipitates become more rounded in the initial period. On further deformation, the increase in the proportion of the rafted (elongated shape) γ’-phase is observed at the expense of cuboidal precipitates, so that all the precipitates are rafted at a strain of 1.4%.
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