ICAMS / Interdisciplinary Centre for Advanced Materials Simulation


Gamma-channel stabilization mechanism in Ni-base superalloys

J. V. Görler, S. Brinckmann, O. Shchyglo, I. Steinbach.

Philosophical Magazine Letters, 95, 519-525, (2015)


A mechanism is presented which opposes coalescence of -precipitates in Ni-base superalloys. The mechanism is based on the non-linear behaviour of the elastic energy in -channels, caused by the misfit strain between matrix and precipitate, as a function of the channel width. Variation of the channel width causes a disjoining pressure dependent on the density of misfit dislocations.

DOI: 10.1080/09500839.2015.1109716
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