Carbon Particle In-Situ Alloying of the Case-Hardening Steel 16MnCr5 in Laser Powder Bed Fusion
- The carbon content of steel affects many of its essential properties, e.g., hardness and mechanical strength. In the powder bed fusion process of metals using a laser beam (PBF-LB/M), usually, pre-alloyed metal powder is solidified layer-by-layer using a laser beam to create parts. A reduction of the carbon content in steels is observed during this process. This study examines adding carbon particles to the metal powder and in situ alloying in the PBF-LB/M process as a countermeasure. Suitable carbon particles are selected and their effect on the particle size distribution and homogeneity of the mixtures is analysed. The workability in PBF-LB is then shown. This is followed by an evaluation of the resulting mechanical properties (hardness and mechanical strength) and microstructure in the as-built state and the state after heat treatment. Furthermore, potential use cases like multi-material or functionally graded parts are discussed.
Author: | Matthias SchmittORCiD, Albin GottwaltORCiD, Jakob Winkler, Thomas Tobie, Georg Schlick, Karsten Stahl, Ulrich TetzlaffORCiD, Johannes Schlip, Gunther Reinhart |
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Language: | English |
Document Type: | Article |
Year of first Publication: | 2021 |
published in (English): | Metals |
Publisher: | MDPI |
Place of publication: | Basel |
ISSN: | 2075-4701 |
Volume: | 11 |
Issue: | 6 |
Pages: | 15 |
Article Number: | 11060896 |
Review: | peer-review |
Open Access: | ja |
Version: | published |
Tag: | 16MnCr5; PBF-LB/M; additive manufacturing; case-hardening steel; gears; in situ alloying; multi-material |
URN: | urn:nbn:de:bvb:573-10976 |
Related Identifier: | https://doi.org/10.3390/met11060896 |
Faculties / Institutes / Organizations: | Fakultät Maschinenbau |
Licence (German): | Creative Commons BY 4.0 |
Note: | This article belongs to the Special Issue Advances in Additive Manufacturing of Metals |
Release Date: | 2022/01/04 |