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Erschienen in: Metallography, Microstructure, and Analysis 5/2019

30.09.2019 | Technical Article

Nano-mechanical Characterization of SLM-Fabricated Ti6Al4V Alloy: Etching and Precision

verfasst von: Alireza Dareh Baghi, Reza Ghomashchi, Reza H. Oskouei, Heike Ebendorff-Heidepriem

Erschienen in: Metallography, Microstructure, and Analysis | Ausgabe 5/2019

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Abstract

In this research, we are reporting that the nanoindentation results vary between etched and unetched SLM-fabricated titanium alloy (Ti6Al4V) in spite of the same microhardness values. The dimensionless roughness parameter α, as a metric for the sensitivity of nano-hardness values on the surface roughness, is used to highlight whether etching plays any role. Although the value of α for both samples is below the recommended maximum value, the effect of etching is still significant. The hypothesis for a 19% increase in nano-hardness of etched samples is also discussed in this paper. Furthermore, the maximum proposed value of α (α < 0.05) appeared to be invalid for SLM-fabricated titanium and a lower value of α may need to be proposed as a critical value.

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Metadaten
Titel
Nano-mechanical Characterization of SLM-Fabricated Ti6Al4V Alloy: Etching and Precision
verfasst von
Alireza Dareh Baghi
Reza Ghomashchi
Reza H. Oskouei
Heike Ebendorff-Heidepriem
Publikationsdatum
30.09.2019
Verlag
Springer US
Erschienen in
Metallography, Microstructure, and Analysis / Ausgabe 5/2019
Print ISSN: 2192-9262
Elektronische ISSN: 2192-9270
DOI
https://doi.org/10.1007/s13632-019-00581-w

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