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Processing a biocompatible Ti–35Nb–7Zr–5Ta alloy by selective laser melting

Published online by Cambridge University Press:  06 May 2020

Rodolfo Lisboa Batalha ,
Weverson Capute Batalha ,
Liang Deng ,
Tobias Gustmann ,
Simon Pauly ,
Claudio Shyinti Kiminami  and
Piter Gargarella
Rodolfo Lisboa Batalha*
Affiliation:
Graduate Program in Materials Science and Engineering, Federal University of São Carlos, São Carlos 13.565-905, Brazil; and Institute for Complex Materials, Leibniz Institute for Solid State and Materials Research, Dresden D-01069, Germany
Weverson Capute Batalha
Affiliation:
Graduate Program in Materials Science and Engineering, Federal University of São Carlos, São Carlos 13.565-905, Brazil
Liang Deng
Affiliation:
Institute for Complex Materials, Leibniz Institute for Solid State and Materials Research, Dresden D-01069, Germany
Tobias Gustmann
Affiliation:
Fraunhofer Institute for Machine Tools and Forming Technology IWU, Dresden 01187, Germany
Simon Pauly
Affiliation:
Institute for Complex Materials, Leibniz Institute for Solid State and Materials Research, Dresden D-01069, Germany; and Faculty of Engineering, University of Applied Sciences Aschaffenburg, Würzburger, Aschaffenburg D-63743, Germany
Claudio Shyinti Kiminami
Affiliation:
Graduate Program in Materials Science and Engineering, Federal University of São Carlos, São Carlos 13.565-905, Brazil; and Department of Materials Engineering, Federal University of São Carlos, São Carlos 13.565-905, Brazil
Piter Gargarella
Affiliation:
Graduate Program in Materials Science and Engineering, Federal University of São Carlos, São Carlos 13.565-905, Brazil; and Department of Materials Engineering, Federal University of São Carlos, São Carlos 13.565-905, Brazil
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

The Ti–35Nb–7Zr–5Ta (TNZT) alloy is a promising alloy because of its biocompatibility, high specific strength, and low Young's modulus. This work aimed at investigating the viability to process the TNZT alloy by selective laser melting (SLM) and at optimizing the processing parameters to obtain densified bulk samples. The single-track approach was first used, and the optimized laser parameters were determined to produce bulk samples with a relative density of 99.0% when an energy input of 58.3 J/mm3 was used. The effect of porosity on mechanical properties was studied, and the as-built SLM samples presented slightly lower compressive strength than samples produced by Cu-mould suction casting, as a result of a columnar grain structure in the SLMed samples. Prototypes were manufactured, proving the feasibility of manufacturing parts of the TNZT alloy with complex geometry by SLM.

Keywords

selective laser meltingparameters optimizationβ-Ti biocompatible alloysprototyping
Type
Article
Information
Journal of Materials Research , Volume 35 , Issue 9 , 14 May 2020 , pp. 1143 - 1153
Copyright
Copyright © Materials Research Society 2020

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