Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1571969 | Materials Characterization | 2010 | 5 Pages |
Abstract
Dendritic coarsening of γ′ was investigated in a directionally solidified Ni-base superalloy during exposure at 1173 K for 24,000 h. Chemical homogeneity along different directions and residual internal strain in the experimental superalloy were measured by electronic probe microanalysis (EPMA) and electron back-scattered diffraction (EBSD) technique. It was indicated that the gradient of element distribution was anisotropic and the inner strain between dendrite core and interdendritic regions was different even after 24,000 h of exposure at 1173 K, which influenced the kinetics for the dendrite coarsening of γ′ phase.
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Authors
H. Li, L. Wang, L.H. Lou,