Advances in Laser Additive Manufacturing of Ti-Nb Alloys: From Nanostructured Powders to Bulk Objects

The additive manufacturing of low elastic modulus alloys that have a certain level of porosity for biomedical needs is a growing area of research. Here, we show the results of manufacturing of porous and dense samples by a laser powder bed fusion (LPBF) of Ti-Nb alloy, using two distinctive fusion s...

Full description

Saved in:
Bibliographic Details
Published inNanomaterials (Basel, Switzerland) Vol. 11; no. 5; p. 1159
Main Authors Khimich, Margarita A, Prosolov, Konstantin A, Mishurova, Tatiana, Evsevleev, Sergei, Monforte, Xavier, Teuschl, Andreas H, Slezak, Paul, Ibragimov, Egor A, Saprykin, Alexander A, Kovalevskaya, Zhanna G, Dmitriev, Andrey I, Bruno, Giovanni, Sharkeev, Yurii P
Format Journal Article
LanguageEnglish
Published Switzerland MDPI AG 29.04.2021
MDPI
Subjects
Online AccessGet full text

Cover

Loading…
More Information
Summary:The additive manufacturing of low elastic modulus alloys that have a certain level of porosity for biomedical needs is a growing area of research. Here, we show the results of manufacturing of porous and dense samples by a laser powder bed fusion (LPBF) of Ti-Nb alloy, using two distinctive fusion strategies. The nanostructured Ti-Nb alloy powders were produced by mechanical alloying and have a nanostructured state with nanosized grains up to 90 nm. The manufactured porous samples have pronounced open porosity and advanced roughness, contrary to dense samples with a relatively smooth surface profile. The structure of both types of samples after LPBF is formed by uniaxial grains having micro- and nanosized features. The inner structure of the porous samples is comprised of an open interconnected system of pores. The volume fraction of isolated porosity is 2 vol. % and the total porosity is 20 vol. %. Cell viability was assessed in vitro for 3 and 7 days using the MG63 cell line. With longer culture periods, cells showed an increased cell density over the entire surface of a porous Ti-Nb sample. Both types of samples are not cytotoxic and could be used for further in vivo studies.
ISSN:2079-4991
2079-4991
DOI:10.3390/nano11051159