Title

Processing and properties of topologically optimised biomedical Ti-24Nb-4Zr-8Sn scaffolds manufactured by selective laser melting.

Document Type

Journal Article

Publisher

Elsevier

Faculty

Health, Engineering and Science

School

School of Engineering

RAS ID

19447

Comments

This article was originally published as: Liu, Y. J., Li, X. P., Zhang, L. C., & Sercombe, T. B. (2015). Processing and properties of topologically optimised biomedical Ti–24Nb–4Zr–8Sn scaffolds manufactured by selective laser melting. Materials Science and Engineering: A, 642, 268-278. Original article available here

Abstract

This study investigated the effect of the processing parameters on the quality and mechanical properties of a biomedical titanium alloy (Ti-24Nb-4Zr-8Sn) scaffolds fabricated by selective laser melting. Optimal manufacturing parameters were then determined through analysing the pores distribution, geometrical accuracy and the mechanical properties of the produced components. The evaporation of tin during the process is thought to be the main cause of pore generation at higher incident energy densities. Using the optimal processing conditions, the strength of the scaffold reached 51MPa at a scaffold density of <1g/cm3 and a high solid strut relative density of ~99.3%. Fracture surface analysis found that the main reason for strut early failure was the weaknesses of struts caused by the presence of pores as well the thickness of strut and internal unmelted powders.

DOI

10.1016/j.msea.2015.06.088

Access Rights

Open access

Share

 
COinS