A novel low-modulus titanium alloy for biomedical applications: A comparison between selective laser melting and metal injection moulding

Suwanpreecha, Chanun; Alabort, Enrique; Tang, Yuanbo T.; Panwisawas, Chinnapat; Reed, Roger C.; Manonukul, Anchalee

doi:10.1016/j.msea.2021.141081

Cited by 31 publications

(11 citation statements)

References 51 publications

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“…Due to its layer-by-layer processing principle, − three-dimensional (3D) printing technology has unique advantages in the personalized manufacturing of implants. Titanium alloy implants are usually fabricated by selective laser melting (SLM), which can effectively shorten the manufacturing cycles, improve material utilization, and fabricate complex personalized parts. − …”

Section: Introductionmentioning

confidence: 99%

Effects of Process Parameters on the Corrosion Resistance and Biocompatibility of Ti6Al4V Parts Fabricated by Selective Laser Melting

et al. 2022

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Excellent biocompatibility and corrosion resistance of implants are essential for Ti6Al4V parts fabricated by selective laser melting (SLM) for biomedical applications. To achieve better corrosion resistance and biocompatibility of Ti6Al4V parts, the effects of SLM processing parameters on the corrosion resistance and the biocompatibility of Ti6Al4V parts are investigated by changing the scanning speeds and laser powers. The detailed influence mechanism of processing parameters on the properties of Ti6Al4V parts is studied from two aspects, including microstructure and defects. It is found that the corrosion resistance and biocompatibility of Ti6Al4V parts can be adjusted by changing the scanning speed and the laser power due to the constituent phase and the number and size of defect holes of Ti6Al4V parts. Compared with the laser power, the scanning speed has a stronger influence on the performance of the part, which can be used as “coarse tuning” based on the performance requirements. At the scanning speed of 1100 mm/s and the laser power of 280 W, Ti6Al4V parts with better corrosion resistance can be obtained. Ti6Al4V parts with better biocompatibility are fabricated at the scanning speed of 1200 mm/s and the laser power of 200 W.

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Section: Introductionmentioning

confidence: 99%

Effects of Process Parameters on the Corrosion Resistance and Biocompatibility of Ti6Al4V Parts Fabricated by Selective Laser Melting

et al. 2022

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“…The furnace atmosphere is one of the critical issues in the sintering process that influences the material properties, especially for Ti alloys, which are highly reactive with carbon, oxygen, nitrogen and hydrogen. Excessive impurity pick-up during debinding and sintering reduces elongation [124] owing to the formation α-phase by oxygen picking in CP-Ti [102] and the formation of brittle TiC generated by excessive carbon in beta Ti alloys [11,187,188]. As observed from Table 5, atmospheres suitable for sintering of stainless steel are H 2 , N 2 , Ar and vacuum, but the atmosphere for the sintering of CP-Ti and Ti-6Al-4V is limited to Ar or vacuum.…”

Section: Sinteringmentioning

confidence: 99%

“…Moreover, although CP-Ti has been recently investigated [102], the mechanical properties can still be improved by minimising the impurity during debinding and sintering. In particular, the production of MEX parts in biocompatible and low elastic modulus beta-type Ti alloys, which are well known as challenging alloys for MIM fabrication due to the formation of brittle TiC [11,183,202], still needs to be further developed. Moreover, there is still a lack of investigations regarding the effects of adjustable processing parameters on the properties in more detail, e.g., the effect of infill percentage and infill pattern on the physical and mechanical properties, the printability of complex parts and the stability of complex parts during debinding and sintering.…”

Section: Current Prospective Applications and Future Direction Of Met...mentioning

confidence: 99%

“…This process has become increasingly popular for various material fabrications, such as ceramic, polymer and metal [2][3][4][5]. Many metal AM processes, such as powder bed fusion (PBF), direct energy deposition (DED) and materials extrusion (MEX) can successfully fabricate various metals, e.g., stainless steel [6][7][8][9], titanium alloys [10][11][12][13], nickel alloys [14][15][16][17][18], cobalt [19,20] and aluminium alloys [21][22][23][24][25]. AM can also provide a high degree of freedom, lightweight design with almost unlimited shape, complexity and a varied range of sizes depending on the printing process [26].…”

Section: Introductionmentioning

confidence: 99%

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A Review on Material Extrusion Additive Manufacturing of Metal and How It Compares with Metal Injection Moulding

Suwanpreecha¹,

Manonukul²

2022

Metals

Self Cite

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Material extrusion additive manufacturing of metal (metal MEX), which is one of the 3D printing processes, has gained more interests because of its simplicity and economics. Metal MEX process is similar to the conventional metal injection moulding (MIM) process, consisting of feedstock preparation of metal powder and polymer binders, layer-by-layer 3D printing (metal MEX) or injection (MIM) to create green parts, debinding to remove the binders and sintering to create the consolidated metallic parts. Due to the recent rapid development of metal MEX, it is important to review current research work on this topic to further understand the critical process parameters and the related physical and mechanical properties of metal MEX parts relevant to further studies and real applications. In this review, the available literature is systematically summarised and concluded in terms of feedstock, printing, debinding and sintering. The processing-related physical and mechanical properties, i.e., solid loading vs. dimensional shrinkage maps, sintering temperature vs. relative sintered density maps, stress vs. elongation maps for the three main alloys (316L stainless steel, 17-4PH stainless steel and Ti-6Al-4V), are also discussed and compared with well-established MIM properties and MIM international standards to assess the current stage of metal MEX development.

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“…Titanium and its alloys are considered lucrative materials in various industries such as aerospace, 1,2,3 chemical, 4 marine, 5 biomedical, 6 , 7 , 8 , 9 and automobile, 10 , 11 etc. The dominating nature of titanium, among other metals, owes to its innate properties, such as high strength-to-weight ratio, high corrosion resistance, excellent biocompatibility, and high strength at elevated temperatures.…”

Section: Introductionmentioning

confidence: 99%

Optimization of tribological parameters to enhance wear and friction properties of Ti6Al4V alloy using Taguchi method

Sreesha

Chandraker

Kumar

2022

Proceedings of the Institution of Mechanical Engineers, Part J:

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The present study is an endeavor to investigate the wear and friction behavior of Ti6Al4V against alumina (Al2O3) using a pin-on-disc tribometer at room temperature. The tests were performed for a given range of loads (10–90 N) and sliding velocities (0.5–4 m/s) for a sliding distance of 3000 m. The wear rate increased continuously with load and showed transition behavior with respect to the sliding velocity. Minimum friction was observed at the intermediate sliding velocities. Using the Taguchi tool, it was found that the load influenced the wear rate more significantly than the sliding velocity and the behavior was the opposite for the coefficient of friction. A wear model was predicted using regression, and subsequent confirmatory tests were carried out to validate the same. The ex-situ characterization of both worn-out surfaces and wear debris was conducted using Scanning Electron Microscope (SEM) along with the Energy Dispersion Spectroscopy (EDS) to study the surface morphology and level of oxidation, respectively. The wear mechanism was found to be a combination of adhesion, abrasion, oxidation, and delamination wear. The distinct lower wear rates at higher loads and velocities were attributed to the formation of Ti8O15 revealed by the X-ray diffraction (XRD) study.

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A novel low-modulus titanium alloy for biomedical applications: A comparison between selective laser melting and metal injection moulding

Cited by 31 publications

References 51 publications

Effects of Process Parameters on the Corrosion Resistance and Biocompatibility of Ti6Al4V Parts Fabricated by Selective Laser Melting

Effects of Process Parameters on the Corrosion Resistance and Biocompatibility of Ti6Al4V Parts Fabricated by Selective Laser Melting

A Review on Material Extrusion Additive Manufacturing of Metal and How It Compares with Metal Injection Moulding

Optimization of tribological parameters to enhance wear and friction properties of Ti6Al4V alloy using Taguchi method

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