Selective Electron Beam Melting of Oxide Dispersion Strengthened Copper

Beitrag in einer Fachzeitschrift


Details zur Publikation

Autor(en): Pobel C, Lodes M, Körner C
Zeitschrift: Advanced Engineering Materials
Jahr der Veröffentlichung: 2018
Band: 20
Heftnummer: 8
ISSN: 1438-1656
Sprache: Englisch


Abstract

An oxide dispersion strengthened (ODS) copper powder containing 5 vol% Al2O3 as finely dispersed particles is processed by selective electron beam melting (SEBM),
a powder bed based additive manufacturing technology. Contrary to usual powder characteristics
used for SEBM, the particles show a non‐spherical morphology and a copper oxide layer
on their surface. A preheating strategy as well as melting parameters for successful
generation of ODS‐Cu samples is developed to achieve processability despite the adverse
powder conditions. Specimens are built and their meso‐ and microscale structures are
analyzed by optical microscopy (OM) and scanning electron microscopy (SEM) as well
as energy dispersive X‐ray analyses (EDX). Temperature depending phase separation
effects previously encountered in literature during fabrication of ODS‐Cu powders
are taken into account. Alumina particles were found to coagulate during the process. Partly the Al2O3 was melted and separated from the Cu which resulted in heavy demixing of the system
and subsequent loss of dispersion strengthening effect.



FAU-Autoren / FAU-Herausgeber

Körner, Carolin Prof. Dr.-Ing.
Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle)
Lodes, Matthias Dr.-Ing.
Zentralinstitut für Neue Materialien und Prozesstechnik
Pobel, Christoph
Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle)


Zitierweisen

APA:
Pobel, C., Lodes, M., & Körner, C. (2018). Selective Electron Beam Melting of Oxide Dispersion Strengthened Copper. Advanced Engineering Materials, 20(8). https://dx.doi.org/10.1002/adem.201800068

MLA:
Pobel, Christoph, Matthias Lodes, and Carolin Körner. "Selective Electron Beam Melting of Oxide Dispersion Strengthened Copper." Advanced Engineering Materials 20.8 (2018).

BibTeX: 

Zuletzt aktualisiert 2018-30-11 um 14:53