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Additively manufactured porous titanium alloy scaffolds for orthopaedics: An effect of process parameters on porosity

    Authors

    1 Department of Mechanical Engineering, Jadavpur University, Kolkata, 700032, India

    2 Department of Mechanical Engineering, Techno Engineering College Banipur, Habra, 743233, India

    3 Department of Aerospace Engineering and Applied Mechanics, Indian Institute of Engineering Science and Technology, Shibpur, 711103, Howrah, India

,

Document Type : Research Article

Abstract

Titanium alloys have been widely used as metallic materials for additive manufacturing, especially selective laser melting in recent decades because of its great corrosion resistance, excellent mechanical properties and bio- compatibility. Solid titanium alloys have higher compressive strength and elastic modulus than natural human bones and to get similar results that of human bones, solid titanium alloys are replaced by porous titanium alloys to fulfil the orthopaedic demands in biomedical applications. In this study two different types of Ti scaffolds (Grid and Vinties, each of two, total number of four) were designed using 3D CAD software with 65% porosity and fabricated through SLM process. The process parameters, employed in the work like laser power, hatch distancing, scanning speed, and layer thickness are the most effective factors that affect the porosity of the SLM-fabricated samples. The results demonstrate that when the porosity percentage increases, the energy density, scanning speed, and hatch distancing rise, but the laser power drops. This study primarily focuses on to determine porosity of the fabricated scaf- folds by Archimedes principle and optimizing the process parameters. Finally, compressive test is carried out on the scaffolds in an INSTRON machine of maximum ± 25 kN load capacity. The result shows better capability to man-ufacture with minimum error in porosity percentage and good potential for orthopedic applications as metallic implants.
 

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References
 Bartolomeu, F., et al. “Implant surface design for improved implant stability – A study on Ti6Al4V dense and cellular structures produced by Selec- tive Laser Melting”. Tribology International 129 (2019): 272–282. 10.1016/j.triboint.2018.08.012.
Becerikli and Mustafa. “P2000-A high-nitrogen austenitic steel for application in bone surgery”.Plos one 14 (2019). 10 . 1371 / journal . pone .0214384.
Butler, C., et al. “Effects of processing parame- ters and heat treatment on thermal conductivity of additively manufactured AlSi10Mg by selec- tive laser melting”. Materials Characterization 173 (2021): 110945–110945. 10.1016/j.matchar.
2021.110945.
Joguet, David, et al. “Porosity content control of CoCrMo and titanium parts by Taguchi method applied to selective laser melting process parame- ter”. Rapid Prototyping Journal 22.1 (2016): 20–
30. 10.1108/rpj-09-2013-0092.
Ju, Jiang, et al. “Effect of heat treatment on microstructure and tribological behavior of Ti–6Al–4V alloys fabricated by selective laser melting”.  Tribology  International  159  (2021):106996–106996. 10.1016/j.triboint.2021.106996.
junfeng, Li and Wei zhengying. “Process Opti- mization and Microstructure Characterization of Ti6Al4V Manufactured by Selective Laser Melt- ing”. IOP Conference Series: Materials Science and Engineering 269.1 (2017): 012026–012026. 10.1088/1757-899x/269/1/012026.
Khorasani, Amir Mahyar, et al. “A survey on mech- anisms and critical parameters on solidification of selective laser melting during fabrication of Ti-6Al-4V prosthetic acetabular cup”. Materials & Design 103 (2016): 348–355. 10.1016/j.matdes.2016.04.074.
Leyens, Christoph and Manfred Peters. “Titanium and titanium alloys: fundamentals and applica- tions”. John Wiley & Sons (2003). 10 . 1002 / 3527602119.
Li, Zhonghua, et al. “Optimising the process param- eters of selective laser melting for the fabrica- tion of Ti6Al4V alloy”. Rapid Prototyping Jour- nal 24.1 (2018): 150–159. 10.1108/rpj-03-2016-0045.
Martens, M., et al. “The mechanical characteristics of cancellous bone at the upper femoral region”. Journal of Biomechanics 16.12 (1983): 971–983. 10.1016/0021-9290(83)90098-2.
Nan and Jin. “Effects of heat treatment on microstructure and mechanical properties of selective laser melted Ti-6Al-4V lattice materi- als”. International Journal of Mechanical Sci- ences 190 (2021). 10.1155/2021/6646588.
Nicola and Schiavone. “Effect of 3D Printing Tem- perature Profile on Polymer Materials Behavior”. 3D Printing and Additive Manufacturing (2020). 10.1089/3dp.2020.0175.
Pei, Wei, et al. “Numerical simulation and para- metric analysis of selective laser melting process of AlSi10Mg powder”. Applied Physics A 123.8 (2017): 1–15. 10.1007/s00339-017-1143-7.
Shi, Xuezhi, et al. “Effect of high layer thickness on surface quality and defect behavior of Ti-6Al- 4V fabricated by selective laser melting”. Optics & Laser Technology 132 (2020): 106471–106471. 10.1016/j.optlastec.2020.106471.
Tiwari, Jitendar Kumar, et al. “Investigation of porosity, microstructure and mechanical properties of additively manufactured graphene rein- forced AlSi10Mg composite”. Additive Manufac- turing 33 (2020): 101095–101095. 10 . 1016 / j . addma.2020.101095.
International Research Journal on Advanced Science Hub
Volume 4, Issue 04
April 2022
Page 88-93
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