Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1563039 | Computational Materials Science | 2009 | 7 Pages |
Abstract
The constitutive behaviour at room temperature of a single-crystal nickel-base superalloy is presented in a new model. This model is based on crystal plasticity and takes Schmid- as well as non-Schmid stresses, elastic anisotropy and tension/compression asymmetry into account. By comparison with uniaxial tensile and compressive tests, the model is shown to reproduce the real behaviour well, including the tension/compression asymmetry. The model also shows that typically encountered deviations in orientations of castings have a non-negligible influence on stiffness and yield limit, which must be taken into account for industrial applications.
Related Topics
Physical Sciences and Engineering
Engineering
Computational Mechanics
Authors
D. Leidermark, J.J. Moverare, K. Simonsson, S. Sjöström, S. Johansson,