Laser Beam Melting in Powder Bed of nonspherical aluminium microparticles dry coated with metal nanoparticles

Conference contribution


Publication Details

Author(s): Karg M, Ahuja B, Schmidt J, Winzer B, Wirth KE, Peukert W, Schmidt M
Editor(s): Igor Drstvenšek, Dietmar Drummer, Michael Schmidt
Publisher: Interesansa - zavod
Publishing place: Ljubljana
Publication year: 2016
Conference Proceedings Title: Proceedings [Elektronski vir] / 6th International Conference on Additive Technologies iCAT2016
Pages range: 67-79
ISBN: 978-961-285-537-6
Language: English


Abstract


Out of all Al alloys, Laser Beam Melting in Powder

Bed (LBM) is almost exclusively used to process Al-Si cast

alloys today. Feasibility of LBM of high-performance Al-Cu

wrought alloys was published previously by the authors.

Prealloyed powders are used for LBM. Small amounts or less

common application-specific alloys must be atomized on

request which is expensive, time consuming and of varying

quality. Instead, during LBM alloys might form from mixtures

of few basic powders. If density differs strongly as e. g. with Al

and Cu, powders de-mix uncontrollably due to gravity. In

LBM, spherical inert gas atomized powders are used. Cheaper

non-spherical air atomized Al powders deposit insufficiently

homogeneous in thin powder layers. LBM of Metal Matrix

Composites (MMC) was shown using mechanical alloying that

was time-consuming, affected particle size and shape.

The goal of this contribution is to investigate the feasibility of

an approach towards larger freedom of choice in LBM

regarding all aforementioned dimensions of alloy composition,

MMC creation and non-spherical base powders. Metal

nanoparticles (np) were dry coated onto air atomized Al alloy

micro particles. Powders with adhering np and LBM products

were analyzed and compared to previous results.



FAU Authors / FAU Editors

Ahuja, Bhrigu
Lehrstuhl für Photonische Technologien
Karg, Michael
Lehrstuhl für Photonische Technologien
Peukert, Wolfgang Prof. Dr.-Ing.
Lehrstuhl für Feststoff- und Grenzflächenverfahrenstechnik
Schmidt, Jochen Dr.
Sonderforschungsbereich 814 Additive Fertigung
Schmidt, Michael Prof. Dr.-Ing.
Lehrstuhl für Photonische Technologien
Winzer, Bettina
Lehrstuhl für Feststoff- und Grenzflächenverfahrenstechnik
Wirth, Karl-Ernst Prof. Dr.-Ing.
Professur für Partikeltechnik


Additional Organisation
Erlangen Graduate School in Advanced Optical Technologies
Zentralinstitut für Neue Materialien und Prozesstechnik


How to cite

APA:
Karg, M., Ahuja, B., Schmidt, J., Winzer, B., Wirth, K.-E., Peukert, W., & Schmidt, M. (2016). Laser Beam Melting in Powder Bed of nonspherical aluminium microparticles dry coated with metal nanoparticles. In Igor Drstvenšek, Dietmar Drummer, Michael Schmidt (Eds.), Proceedings [Elektronski vir] / 6th International Conference on Additive Technologies iCAT2016 (pp. 67-79). Nürnberg, DE: Ljubljana: Interesansa - zavod.

MLA:
Karg, Michael, et al. "Laser Beam Melting in Powder Bed of nonspherical aluminium microparticles dry coated with metal nanoparticles." Proceedings of the 6th International Conference on Additive Technologies, Nürnberg Ed. Igor Drstvenšek, Dietmar Drummer, Michael Schmidt, Ljubljana: Interesansa - zavod, 2016. 67-79.

BibTeX: 

Last updated on 2018-19-04 at 03:40