Additive Manufacturing of Ti-6Al-4V alloy for Biomedical Applications

Gayathri, Yashwanth Kumar Balasubramanian; Kumar, Rishabh; Ramalingam, Vaira Vignesh; Priyadharshini, G.; Kumar, Kuttanpillai Santhosh; Prabhu, T. Ram

doi:10.1007/s40735-022-00700-1

Cited by 21 publications

(3 citation statements)

References 50 publications

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“…Metalnikov et al [56] also corroborated this finding by comparing EBM and SLM Ti-6Al-4V, with the latter having a slightly better corrosion resistance than the former. L-PBF N/A 3.5% NaCl Yang et al [58] SLM and WAAM N/A 3.5% NaCl Jesus et al [59] SLM Compression fatigue R = 0.05, f = 1 and 10 Hz with varying stresses up to 10 kN 3.5% NaCl and Ringer's Chen et al [60] L-PBF N/A Hank's Sharma et al [52] SLM N/A NaOH, NaCl, H 2 SO 4 , SBF Gayathri et al [61] S L M N / A P B S Bai et al [62] EBM N/A PBS Lu et al [63] SLM Wear test with ball-on-disc configuration SBF Wu et al [64] EBM N/A SBF Wegner et al [65] L-PBF Compression fatigue R = 10, f = 5 Hz with varying stresses SBF…”

Section: Am Of Implantsmentioning

confidence: 99%

Corrosion, fatigue and wear of additively manufactured Ti alloys for orthopaedic implants

Tjandra,

Alabort,

Barba

et al. 2023

Materials Science and Technology

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Additive manufacturing (AM) allows for the fabrication of custom orthopaedic implant devices which have complex geometries and similar mechanical properties to bone. This paper reviews the corrosion, fatigue and wear properties of AM Ti alloys to confirm their safety for use in orthopaedic implants. Specifically, AM Ti lattice geometries are highlighted due to their improved osseointegration and better modulus matching with that of bone, making them an attractive option for more durable implant devices. Finally, the properties of current implants made via AM are compared with that made via conventional manufacturing methods to confirm their overall safety.

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Section: Am Of Implantsmentioning

confidence: 99%

Corrosion, fatigue and wear of additively manufactured Ti alloys for orthopaedic implants

Tjandra,

Alabort,

Barba

et al. 2023

Materials Science and Technology

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“…Selective laser melting technology is used to create an individual prosthesis. This method makes it possible to accurately produce an implant with a well-developed roughened surface [ 15 , 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

Numerical and Experimental Study of a Lattice Structure for Orthopedic Applications

2023

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Prosthetic reconstructions provide anatomical reconstruction to replace bones and joints. However, these operations have a high number of short- and long-term complications. One of the main problems in surgery is that the implant remains in the body after the operation. The solution to this problem is to use biomaterial for the implant, but biomaterial does not have the required strength characteristics. The implant must also have a mesh-like structure so that the bone can grow into the implant. The additive manufacturing process is ideal for the production of such a structure. The study deals with the correlation between different prosthetic structures, namely, the relationship between geometry, mechanical properties and biological additivity. The main challenge is to design an endoprosthesis that will mimic the geometric structure of bone and also meet the conditions of strength, hardness and stiffness. In order to match the above factors, it is necessary to develop appropriate algorithms. The main objective of this study is to augment the algorithm to ensure minimum structural weight without changing the strength characteristics of the lattice endoprosthesis of long bones. The iterative augmentation process of the algorithm was implemented by removing low-loaded ribs. A low-loaded rib is a rib with a maximum stress that is less than the threshold stress. Values within the range (10, 13, 15, 16, 17, 18, 19 and 20 MPa) were taken as the threshold stress. The supplement to the algorithm was applied to the initial structure and the designed structure at threshold stresses σf = 10, 13, 15, 16, 17, 18, 19 and 20 MPa. A Pareto diagram for maximum stress and the number of ribs is plotted for all cases of the design: original, engineered and lightened structures. The most optimal was the designed “lightweight” structure under the condition σf = 17 MPa. The maximum stress was 147.48 MPa, and the number of ribs was 741. Specimens were manufactured using additive manufacturing and then tested for four-point bending.

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“…The mechanical qualities of titanium and its alloys, particularly those provided by the surface, such corrosion resistance and bioactivity, make them ideal materials for orthopaedic implants [11]. The Ti6Al4V alloy, in particular, is frequently utilised for bone replacement due to its ability to improve the adhesion between native tissue and the implanted material [12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Building Orientation and Post Processing of Ti6Al4V Produced by Laser Powder Bed Fusion Process

Rovetta

Ginestra

Ferraro

et al. 2023

JMMP

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Laser powder bed fusion, particularly the selective laser melting (SLM), is an additive manufacturing (AM) technology used to produce near-net-shaped engineering components for biomedical applications, especially in orthopaedics. Ti6Al4V is commonly used for producing orthopaedic implants using SLM because it has excellent mechanical qualities, a high level of biocompatibility, and corrosion resistance. However, the main problems associated with this process are the result of its surface properties: it has to be able to promote cell attachment but, at the same time, avoid bacteria colonization. Surface modification is used as a post-processing technique to provide items the unique qualities that can improve their functionality and performance in particular working conditions. The goal of this work was to produce and analyse Ti6Al4V samples fabricated by SLM with different building directions in relation to the building plate (0° and 45°) and post-processed by anodization and passivation. The results demonstrate how the production and post processes had an impact on osteoblast attachment, mineralization, and osseointegration over an extended period of time. Though the anodization treatment result was cytotoxic, the biocompatibility of as-built specimens and specimens after passivation treatment was confirmed. In addition, it was discovered that effective post-processing increases the mineralization of these types of 3D-printed surfaces.

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Additive Manufacturing of Ti-6Al-4V alloy for Biomedical Applications

Cited by 21 publications

References 50 publications

Corrosion, fatigue and wear of additively manufactured Ti alloys for orthopaedic implants

Corrosion, fatigue and wear of additively manufactured Ti alloys for orthopaedic implants

Numerical and Experimental Study of a Lattice Structure for Orthopedic Applications

Building Orientation and Post Processing of Ti6Al4V Produced by Laser Powder Bed Fusion Process

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