Effect of process conditions on mechanical behavior of aluminium wrought alloy EN AW-2618 additively manufactured by Laser Beam Melting in powder bed

Conference contribution


Publication Details

Author(s): Karg M, Ahuja B, Schaub A, Schmidt J, Sachs M, Mahr A, Wiesenmayer S, Wigner L, Wirth KE, Peukert W, Merklein M, Schmidt M
Publication year: 2015
Conference Proceedings Title: Proceedings of Laser in Manfacturing Conference 2015
Pages range: 1-9
Language: English


Abstract


Additive Manufacturing offers geometric freedom excellently suited for topology optimized light weight designs. Ideally these should be built from materials of high strength to weight ratio and high plastic formability- such as aluminium-copper wrought alloys. Al-Cu wrought alloys are considered much less suitable for welding without cracks, so processing them in Laser Beam Melting of Metals in powder bed (LBM) can be considered challenging. Today, the only class of aluminium alloys widely processed by LBM is that of aluminium-silicon cast alloys which are easily weldable. In this contribution, mechanical characteristics of LBM samples are presented and discussed. Tensile tests were conducted under variation of load direction relative to build-up direction and heat treatment. Pronounced anisotropy was observed. Remarkably, elongation at break of T6 heat treated samples pulled in build-up direction exceeds values from literature for conventionally manufactured EN AW-2618A. The chemical constitutions of both the powder and the LBM samples were analyzed and shown to be similar to the expected EN AW-2618A. For further interpretation, boundary conditions of sample production, metallographic microsections and fracture surfaces were considered.



FAU Authors / FAU Editors

Ahuja, Bhrigu
Lehrstuhl für Photonische Technologien
Karg, Michael
Lehrstuhl für Photonische Technologien
Merklein, Marion Prof. Dr.-Ing.
Lehrstuhl für Fertigungstechnologie
Peukert, Wolfgang Prof. Dr.-Ing.
Lehrstuhl für Feststoff- und Grenzflächenverfahrenstechnik
Sachs, Marius
Professur für Partikeltechnik
Schaub, Adam
Lehrstuhl für Fertigungstechnologie
Schmidt, Jochen Dr.
Lehrstuhl für Feststoff- und Grenzflächenverfahrenstechnik
Schmidt, Michael Prof. Dr.-Ing.
Lehrstuhl für Photonische Technologien
Wirth, Karl-Ernst Prof. Dr.-Ing.
Professur für Partikeltechnik


Additional Organisation
Sonderforschungsbereich 814 Additive Fertigung
Erlangen Graduate School in Advanced Optical Technologies
Zentralinstitut für Neue Materialien und Prozesstechnik


How to cite

APA:
Karg, M., Ahuja, B., Schaub, A., Schmidt, J., Sachs, M., Mahr, A.,... Schmidt, M. (2015). Effect of process conditions on mechanical behavior of aluminium wrought alloy EN AW-2618 additively manufactured by Laser Beam Melting in powder bed. In Proceedings of Laser in Manfacturing Conference 2015 (pp. 1-9). Messe München, DE.

MLA:
Karg, Michael, et al. "Effect of process conditions on mechanical behavior of aluminium wrought alloy EN AW-2618 additively manufactured by Laser Beam Melting in powder bed." Proceedings of the Lasers in Manufacturing Conference 2015, Messe München 2015. 1-9.

BibTeX: 

Last updated on 2018-19-04 at 03:17