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Rafting, the directional coarsening of γ′ precipitates in a γ/γ′ microstructure, can affect the mechanical performance and lifetime of Ni-based superalloys. While rafting has been commonly observed in many systems, a criterion for the onset and completion of rafting has not been fully established. In this work, we employ 2D and 3D moment invariants (MIs) to track the evolution of a synthetic γ/γ′...
The strain glass transition has been found in many ferroelastic systems, but the microstructural nature of strain glass is still unclear. Here, two-dimensional second and fourth order moment invariants as well as image entropy are used to evaluate the presence of a strain-glass state in simulated microstructure images of a doped ferroelastic system. Four different microstructural states are identified,...
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