Process development of 99.95% pure copper processed via selective electron beam melting and its mechanical and physical properties

Beitrag in einer Fachzeitschrift
(Originalarbeit)


Details zur Publikation

Autor(en): Guschlbauer R, Momeni S, Osmanlic F, Körner C
Zeitschrift: Materials Characterization
Verlag: Elsevier Inc.
Jahr der Veröffentlichung: 2018
ISSN: 1044-5803
Sprache: Englisch


Abstract

Additive manufacturing
by selective electron beam melting (SEBM) was used to fabricate pure
copper specimens. A process window at process temperature of 530 °C,
gives the required beam powers and deflection speeds for manufacturing
dense specimens (>99.5%). The microstructure of SEBM specimens was
analyzed by using optical and scanning electron microscopy (SEM). Electrical conductivity, thermal conductivity, hardness, and mechanical performance were investigated by using eddy current, laser flash analysis, Vickers hardness
and tensile tests, respectively. It was found that the variation of
beam power and scan speed results in different microstructures from
columnar to nearly equiaxed grain. The electrical conductivity of
SEBM-processed specimens was above 58 MS/m (>100 IACS) while their
hardness was around 55 HV0.05 and 46 HV5 without any dependency on
processing parameters within the process window. The tensile tests
revealed how vertical cracks affect the mechanical strength under
tensile loading condition. The results of this study not only show a
reliable process window but also introduce the links between processing
parameters, defect formations, conductivity and mechanical strength of
pure copper specimens manufactured by SEBM.



FAU-Autoren / FAU-Herausgeber

Guschlbauer, Ralf
Zentralinstitut für Neue Materialien und Prozesstechnik
Körner, Carolin Prof. Dr.-Ing.
Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle)
Momeni, Soroush Dr.-Ing.
Zentralinstitut für Neue Materialien und Prozesstechnik
Osmanlic, Fuad
Zentralinstitut für Neue Materialien und Prozesstechnik


Zitierweisen

APA:
Guschlbauer, R., Momeni, S., Osmanlic, F., & Körner, C. (2018). Process development of 99.95% pure copper processed via selective electron beam melting and its mechanical and physical properties. Materials Characterization. https://dx.doi.org/10.1016/j.matchar.2018.04.009

MLA:
Guschlbauer, Ralf, et al. "Process development of 99.95% pure copper processed via selective electron beam melting and its mechanical and physical properties." Materials Characterization (2018).

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Zuletzt aktualisiert 2018-01-10 um 14:50