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

30-09-2019 | Technical Article

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

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

Published in: Metallography, Microstructure, and Analysis | Issue 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.
previous article Microstructure Evolution and Tensile Behavior of Dissimilar Friction Stir-Welded Pure Copper and Dual-Phase Brass
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Metadata
Title
Nano-mechanical Characterization of SLM-Fabricated Ti6Al4V Alloy: Etching and Precision
Authors
Alireza Dareh Baghi
Reza Ghomashchi
Reza H. Oskouei
Heike Ebendorff-Heidepriem
Publication date
30-09-2019
Publisher
Springer US
Published in
Metallography, Microstructure, and Analysis / Issue 5/2019
Print ISSN: 2192-9262
Electronic ISSN: 2192-9270
DOI
https://doi.org/10.1007/s13632-019-00581-w

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