Selective Electron Beam Melting of Oxide Dispersion Strengthened Copper

Pobel C, Lodes M, Körner C (2018)

Publication Language: English

Publication Type: Journal article

Publication year: 2018

Journal

Advanced Engineering Materials Wiley-VCH Verlag

Book Volume: 20

Journal Issue: 8

DOI: 10.1002/adem.201800068

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.


Authors with CRIS profile

Christoph Pobel Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle) Matthias Lodes Zentralinstitut für Neue Materialien und Prozesstechnik Carolin Körner Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle)

Related research project(s)

Activity Development of SEBM alloys Jan. 1, 2000 - Jan. 1, 2003 Activity SEBM of special alloys Jan. 1, 2000 - Jan. 1, 2003

How to cite

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).

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