Mesoscopic modelling of additively manufactured Inconel 718

Conference contribution


Publication Details

Author(s): Kergaßner A, Mergheim J, Steinmann P
Editor(s): Igor Drstvenšek, Dietmar Drummer, Michael Schmidt
Publisher: Interesansa - zavod
Publishing place: Ljubljana
Publication year: 2016
Conference Proceedings Title: Proceedings 6th International Conference on Additive Technologies - iCAT2016
Pages range: 222-226
Language: English


Abstract


In additive manufacturing complex parts are built from thin layers of powder material. In selective electron beam melting (SEBM), the powder is fused by the energy of an electron beam. The electron beam is guided by electromagnetic fields allowing a very fast deflection, and thus various scan strategies. By using these scan strategies, it is possible to influence the resulting mesostructure in the material, which may range from a columnar to an equiaxed grain structure.

Different macroscopic mechanical properties are expected for altered grain structures. Long and oriented grains cause highly anisotropic behaviour and a uniform grain structure results in isotropic mechanical behaviour.

In this contribution the macroscopic material behaviour is simulated by means of mesoscopic Finite Element simulations. A Voronoi tessellation method is used to model the grain structure of equiaxed Inconel 718. The thermo-mechanical behaviour is modelled using a thermo gradient crystal plasticity model on the mesoscale. Computational homogenization is used to identify temperature-dependent macroscopic mechanical parameters which are compared with experimental results.


FAU Authors / FAU Editors

Kergaßner, Andreas
Lehrstuhl für Technische Mechanik
Mergheim, Julia PD Dr.
Lehrstuhl für Technische Mechanik
Steinmann, Paul Prof. Dr.-Ing.
Lehrstuhl für Technische Mechanik


How to cite

APA:
Kergaßner, A., Mergheim, J., & Steinmann, P. (2016). Mesoscopic modelling of additively manufactured Inconel 718. In Igor Drstvenšek, Dietmar Drummer, Michael Schmidt (Eds.), Proceedings 6th International Conference on Additive Technologies - iCAT2016 (pp. 222-226). Nürnberg: Ljubljana: Interesansa - zavod.

MLA:
Kergaßner, Andreas, Julia Mergheim, and Paul Steinmann. "Mesoscopic modelling of additively manufactured Inconel 718." Proceedings of the 5th International Conference on Additive Technologies - iCAT2016, Nürnberg Ed. Igor Drstvenšek, Dietmar Drummer, Michael Schmidt, Ljubljana: Interesansa - zavod, 2016. 222-226.

BibTeX: 

Last updated on 2019-04-02 at 14:38