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

Y.J. Liu; Xiaopeng Li; L.C. Zhang; Tim Sercombe

doi:10.1016/j.msea.2015.06.088

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

Y.J. Liu, Xiaopeng Li, L.C. Zhang, Tim Sercombe

Research output: Contribution to journal › Article › peer-review

188 Citations (Scopus)

Abstract

© 2015. 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 3 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.

Original language	English
Pages (from-to)	268-278
Journal	Materials Science and Engineering A
Volume	642
Early online date	30 Jun 2015
DOIs	https://doi.org/10.1016/j.msea.2015.06.088
Publication status	Published - 26 Aug 2015

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10.1016/j.msea.2015.06.088

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abstract = "{\textcopyright} 2015. 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 3 and a high solid strut relative density of \textasciitilde{}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.",

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T1 - Processing and properties of topologically optimised biomedical Ti-24Nb-4Zr-8Sn scaffolds manufactured by selective laser melting

AU - Liu, Y.J.

AU - Li, Xiaopeng

AU - Zhang, L.C.

AU - Sercombe, Tim

PY - 2015/8/26

Y1 - 2015/8/26

N2 - © 2015. 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 3 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.

AB - © 2015. 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 3 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.

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DO - 10.1016/j.msea.2015.06.088

M3 - Article

SN - 0921-5093

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JO - Materials Science and Engineering A

JF - Materials Science and Engineering A

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

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