Laser Beam Melting of Amorphous Metals

Karg M, Ahuja B, Kuryntsev S, Schmidt M (2014)

Publication Language: English

Publication Type: Conference contribution

Publication year: 2014

Pages Range: 148-152

Conference Proceedings Title: Proceedings of 5th International Conference on Additive Technologies

Event location: Hotel Vienna Mercure Westbahnhof Wien AT

ISBN: 978-961-281-579-0

URI: http://icat.rapiman.net

Abstract

Amorphous metals which are synonymously called metallic glasses form a rather young group of engineering materials. Compared to crystalline metals they offer unique combinations of properties: tensile strength, hardness, elastic strain, resistance against corrosion and abrasive wear are rather high. In order to minimize crystal growth, rapid solidification from the liquid phase is required. High cooling rates are a characteristic of the additive manufacturing technology Laser Beam Melting in Powder Bed (LBM). This paper shows first results of processing Ti50Cu32Ni15Sn3 by LBM. Unlike many other alloys with high glass forming ability, it does not contain costly rare earth elements. No literature is known to the authors about LBM of this material. Because relative density close to 100 % is a prerequisite for producing parts with high mechanical performance, a parameter study was conducted varying scan speed, hatch distance and laser power in wide ranges. The obtained samples are characterized by metallographic sections, hardness measurements and X-ray diffraction. Apart from reaching high relative densities, a wide variation in Vickers hardness over the length of samples was found. It corresponds to the locally different thermodynamic conditions. Apart from introducing a new material with promising properties to the manufacturing technology of LBM, this might open up a new approach to modify mechanical material properties in a single work piece made from uniform powder by adapting LBM process parameters. Both the range of applications for LBM as well as the range of geometries producible from amorphous metals might be expanded.

Authors with CRIS profile

Michael Karg Lehrstuhl für Photonische Technologien (LPT) Bhrigu Ahuja Lehrstuhl für Photonische Technologien (LPT) Michael Schmidt Lehrstuhl für Photonische Technologien (LPT)

Additional Organisation(s)

Sonderforschungsbereich 814/3 Additive Fertigung Erlangen Graduate School in Advanced Optical Technologies (SAOT) Zentralinstitut für Neue Materialien und Prozesstechnik

How to cite

APA:

Karg, M., Ahuja, B., Kuryntsev, S., & Schmidt, M. (2014). Laser Beam Melting of Amorphous Metals. In Igor Drstvensek (Eds.), Proceedings of 5th International Conference on Additive Technologies (pp. 148-152). Hotel Vienna Mercure Westbahnhof Wien, AT.

MLA:

Karg, Michael, et al. "Laser Beam Melting of Amorphous Metals." Proceedings of the International Conference on Additive Technologies iCAT, Hotel Vienna Mercure Westbahnhof Wien Ed. Igor Drstvensek, 2014. 148-152.

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