Correlation between porosity level and elastic modulus in a foamed hiped Ti alloy

Correlation between porosity level and elastic modulus in a foamed hiped Ti alloy

GUGLIELMI Pasquale, CASTELLANO Anna, CUSANNO Angela, PALUMBO Gianfranco

Abstract. Nowadays, in the manufacturing of highly customized prosthetic implants, the need of devices with mechanical properties close to the human bone’s ones plays a key role. In the present work, Ti6Al4V-ELI porous structures obtained by a solid-state foaming process were studied from a microstructural and mechanical point of view, being the aim to control the stiffness of the prostheses in order to be as much as possible close to the human bone’s one, thus reducing the stress shielding effect. Samples with different levels of porosity (average diameter variable between a few microns and about 50 microns) were investigated by means of contact ultrasonic tests in order to evaluate changes in terms of elastic properties. Metallographic observations combined with contact ultrasonic tests revealed that a good correlation exists between the foamed structure (quantity and average size of the pores) and the stiffness.

Keywords
Ti Alloy, Foaming, Hot Isostatic Pressing, Microstructure, Ultrasonic Tests, Young’s Modulus

Published online 4/19/2023, 8 pages
Copyright © 2023 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: GUGLIELMI Pasquale, CASTELLANO Anna, CUSANNO Angela, PALUMBO Gianfranco, Correlation between porosity level and elastic modulus in a foamed hiped Ti alloy, Materials Research Proceedings, Vol. 28, pp 1427-1434, 2023

DOI: https://doi.org/10.21741/9781644902479-154

The article was published as article 154 of the book Material Forming

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

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