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Title:

Experimental and numerical investigations of the hot cracking susceptibility during the powder bed fusion of AA 7075 using a laser beam

Document type:
Zeitschriftenaufsatz
Author(s):
Wimmer, Andreas; Panzer, Hannes; Zoeller, Christopher; Adami, Stefan; Adams, Nikolaus A.; Zaeh, Michael F.
Abstract:
The variety of processable materials for the powder bed fusion of metals using a laser beam (PBF-LB/M) is still limited. In particular, high-strength aluminum alloys are difficult to process with PBF-LB/M without the occurrence of hot cracks. In situ alloying is a promising method to modify the physical properties of an alloy to reduce its hot cracking susceptibility. In this work, the aluminum alloy 7075 and blends with 2 wt.%, 4 wt.%, and 6 wt.% of Si were processed via PBF-LB/M. The Rappaz–Dr...     »
Keywords:
Additive manufacturing (AM); Hot cracking; In situ alloying; Powder bed fusion; Simulation; Smoothed-particle hydrodynamics (SPH)
Dewey Decimal Classification:
620 Ingenieurwissenschaften
Journal title:
Progress in Additive Manufacturing
Year:
2023
Covered by:
Scopus
Language:
en
Fulltext / DOI:
doi:10.1007/s40964-023-00523-7
WWW:
https://link.springer.com/article/10.1007/s40964-023-00523-7
Publisher:
Springer Science and Business Media LLC
E-ISSN:
2363-95122363-9520
Notes:
Funding text This research was supported by the Deutsche Forschungsgemeinschaft, DFG, project number 387081806. The authors would like to thank Prof. Dr.-Ing. Frank Muecklich and his team from the Saarland University for performing the STEM measurements. Nikolaus A. Adams and Stefan Adami gratefully acknowledge funding through the TUM-Oerlikon Advanced Manufacturing Institute. In addition, computing time was provided by the Gauss Centre for Supercomputing e.V. (www.gauss-centre.eu) at the Leibn...     »
Date of publication:
17.10.2023
TUM Institution:
Lehrstuhl für Aerodynamik und Strömungsmechanik
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