Abstract
The creep behaviour at 1050 °C of oriented MC2 single crystals is analysed by means of SEM and TEM observations. The γ–γ′ rafting process occurs rapidly and appears to be correlated with the establishment of a pseudo-stationary creep stage. The regular and stable networks are seen in the (001) interfaces. A detailed analysis of dislocation networks in these (001) interfaces shows that they are constituted by an association of hexagonal and square cells of a/2 dislocations. The square part is unstable and gives rise to the systematic creation of a dislocations included in the misfit dislocation network.
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