Room temperature yield behaviour of a single-crystal nickel-base superalloy with tension/compression asymmetry
2009 (English)In: Computational materials science, ISSN 0927-0256, Vol. 47, no 2, 366-372 p.Article in journal (Refereed) Published
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 ofcastings have a non-negligible influence on stiffness and yield limit, which must be taken into account for industrial applications.
Place, publisher, year, edition, pages
2009. Vol. 47, no 2, 366-372 p.
Tension/compression asymmetry, Single-crystal superalloy, Crystal plasticity, Yield surface
Engineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-50547DOI: 10.1016/j.commatsci.2009.08.012OAI: oai:DiVA.org:liu-50547DiVA: diva2:271541