Modelling the creep anisotropy of nickel-base superalloys with a composite model
نویسنده
چکیده
The creep anisotropy of nickel-base superalloys with a cubic y' morphology is studied with a composite model. Creep curves and the internal stress distribution in the microstructure under [Oll] load are calculated with a Finite Element Procedure. Analytical considerations are made for arbitrary loading directions. y' cubes (with their interfaces aligned parallel to (001) planes) under [OOl] load have a significant larger creep strength than under [O 111 or [ I l l ] load. Under [Ol 11 load the matrix deformation is mainly concentrated in the roof matrix channels.
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