Springer-10.1007_s11665-018-3380-0.pdf (2.67 MB)
Effect of pore size, morphology and orientation on the bulk stiffness of a porous Ti35Nb4Sn alloy
journal contribution
posted on 2018-05-08, 12:52 authored by Carmen TorresCarmen Torres, John McLaughlin, Ross BonalloThe metal foams of a titanium alloy were designed to study porosity as well as pore size and shape independently. These were manufactured using a powder metallurgy/space-holder technique that allowed a fine control of the pore size and morphology; and then characterized and tested against well-established models to predict a relationship between porosity, pore size and shape, and bulk stiffness. Among the typically used correlations, existing power-law models were found to be the best fit for the prediction of macropore morphology against compressive elastic moduli, outperforming other models such as exponential, polynomial or binomial. Other traditional models such as linear ones required of updated coefficients to become relevant to metal porous sintered macrostructures. The new coefficients reported in this study contribute toward a design tool that allows the tailoring of mechanical properties through porosity macrostructure. The results show that, for the same porosity range, pore shape and orientation have a significant effect on mechanical performance and that they can be predicted. Conversely, pore size has only a mild impact on bulk stiffness.
History
School
- Mechanical, Electrical and Manufacturing Engineering
Published in
Journal of Materials Engineering and PerformanceCitation
TORRES-SANCHEZ, C., MCLAUGHLIN, J. and BONALLO, R., 2018. Effect of pore size, morphology and orientation on the bulk stiffness of a porous Ti35Nb4Sn alloy. Journal of Materials Engineering and Performance, 27 (6), pp.2899–2909Publisher
Springer (© The Authors)Version
- VoR (Version of Record)
Publisher statement
This work is made available according to the conditions of the Creative Commons Attribution 4.0 International (CC BY 4.0) licence. Full details of this licence are available at: http://creativecommons.org/licenses/ by/4.0/Acceptance date
2018-04-17Publication date
2018Notes
This is an Open Access Article. It is published by Springer under the Creative Commons Attribution 4.0 International Licence (CC BY). Full details of this licence are available at: http://creativecommons.org/licenses/by/4.0/ISSN
1059-9495eISSN
1544-1024Publisher version
Language
- en