Interfaces in a modified inconel 718 with compact precipitates

摘要

Interfaces in a modified Inconel 718 containing compact precipitates were investigated using high resolution transmission electron microscopy. Morphology configuration and crystallography of the compact precipitate were confirmed as cube-shaped γ' precipitate and all six faces were coated with a thin shell, these shells could be classified as three variants of disc-shapedγ" precipitate on {001} planes of the matrix, and the [001] orientations (c-axis) of the three variants ofγ" precipitate shells were paral- lel to [001], [010] and [100] orientations of the matrix.