Influence of the Scanning Strategy on the Microstructure and Mechanical Properties in Selective Electron Beam Melting of Ti-6Al-4V

Beitrag in einer Fachzeitschrift
(Originalarbeit)


Details zur Publikation

Autor(en): Scharowsky T, Jüchter V, Singer R, Körner C
Zeitschrift: Advanced Engineering Materials
Verlag: Wiley-VCH Verlag
Jahr der Veröffentlichung: 2015
Band: 17
Heftnummer: 11
Seitenbereich: 1573-1578
ISSN: 1527-2648
Sprache: Englisch


Abstract


Selective electron beam melting (SEBM) is perhaps the fastest production process for additive manufacturing techniques from powder beds. In the present investigation, scan speeds of 10 m s have been used successfully for the melting. Nevertheless, the beam power has to be adjusted to guarantee a density of more than 99.5% for the build samples. The aim of this paper is to investigate the effect of the scan speed and beam power on the microstructure and the mechanical properties of Ti-6Al-4V. Therefore, a process map with a window for samples with a density higher than 99.5% and a good geometrical accuracy was developed. But, there are strong differences in microstructure and the resulting mechanical properties. These differences result from changes in the total energy input. In the presented work, strength is found to increase somewhat with decreasing volume energy (60-30 J mm) at a scan speed of 4 m s as the cooling rate increases. This causes a change in microstructure, as the α platelet size varies in the range between 400 nm and 1.3 μm. Thus, an increase in ultimate tensile strength of 5% could be realized by adjusted energy input.



FAU-Autoren / FAU-Herausgeber

Jüchter, Vera
Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle)
Körner, Carolin Prof. Dr.-Ing.
Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle)
Scharowsky, Thorsten
Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle)
Singer, Robert Prof. Dr.-Ing.
Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle)


Zitierweisen

APA:
Scharowsky, T., Jüchter, V., Singer, R., & Körner, C. (2015). Influence of the Scanning Strategy on the Microstructure and Mechanical Properties in Selective Electron Beam Melting of Ti-6Al-4V. Advanced Engineering Materials, 17(11), 1573-1578. https://dx.doi.org/10.1002/adem.201400542

MLA:
Scharowsky, Thorsten, et al. "Influence of the Scanning Strategy on the Microstructure and Mechanical Properties in Selective Electron Beam Melting of Ti-6Al-4V." Advanced Engineering Materials 17.11 (2015): 1573-1578.

BibTeX: 

Zuletzt aktualisiert 2018-22-11 um 20:50