Tailoring the grain structure of IN718 during selective electron beam melting

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Details zur Publikation

Autor(en): Körner C, Helmer HE, Bauereiß A, Singer R
Verlag: EDP Sciences
Jahr der Veröffentlichung: 2014
Band: 14


Abstract


Selective electron beam melting (SEBM) is an additive manufacturing method where complex parts are built from metal powders in layers of about 50 μm. SEBM works under vacuum conditions which results in a perfect protection of the metal alloy. The electron beam is used for heating (about 900 °C building temperature) and selective melting. The high beam velocities allow innovative scanning strategies in order to adapt the local solidification conditions which determine the epitaxial solidification process of IN718. We show how scanning strategies can be used either to produce a columnar grain structure with a high texture in building direction or a complete texture-free fine grained structure. Numerical simulations of the selective melting process are applied to reveal the fundamental mechanisms responsible for the completely different grain structures. In addition the influence of the different grain structures on the mechanical properties of IN718 is briefly discussed. © 2014 Owned by the authors, published by EDP Sciences.



FAU-Autoren / FAU-Herausgeber

Bauereiß, Andreas
Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle)
Helmer, Harald Ernst
Technische Fakultät
Körner, Carolin Prof. Dr.-Ing.
Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle)
Singer, Robert Prof. Dr.-Ing.
Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle)


Zitierweisen

APA:
Körner, C., Helmer, H.E., Bauereiß, A., & Singer, R. (2014). Tailoring the grain structure of IN718 during selective electron beam melting. Giens: EDP Sciences.

MLA:
Körner, Carolin, et al. "Tailoring the grain structure of IN718 during selective electron beam melting." Proceedings of the 2nd European Symposium on Superalloys and Their Applications, EUROSUPERALLOYS 2014, Giens EDP Sciences, 2014.

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Zuletzt aktualisiert 2018-02-12 um 20:50