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https://hdl.handle.net/2440/128198
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Type: | Journal article |
Title: | Nano-mechanical characterization of SLM-fabricated Ti6Al4V alloy: etching and precision |
Author: | Dareh Baghi, A. Ghomashchi, R. Oskouei, R.H. Ebendorff-Heidepriem, H. |
Citation: | Metallography, Microstructure, and Analysis, 2019; 8(5):749-756 |
Publisher: | Springer Nature |
Issue Date: | 2019 |
ISSN: | 2192-9262 2192-9270 |
Statement of Responsibility: | Alireza Dareh Baghi, Reza Ghomashchi, Reza H. Oskouei, Heike Ebendorff-Heidepriem |
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. |
Keywords: | Nanoindentation; microindentation; titanium alloys; selective laser melting (SLM) |
Rights: | © ASM International 2019 |
DOI: | 10.1007/s13632-019-00581-w |
Published version: | http://dx.doi.org/10.1007/s13632-019-00581-w |
Appears in Collections: | Aurora harvest 4 Mechanical Engineering publications |
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