Experimental investigation of biological and mechanical properties of CoCrMo based selective laser melted metamaterials for bone implant manufacturing

Ghani, Saiful Anwar Che; Mohamed, Siti Rohaida; Sha'ban, Munirah; Harun, Wan Sharuzi Wan; Noar, Nor Aida Zuraimi Md

doi:10.1016/j.procir.2020.05.122

Cited by 11 publications

(3 citation statements)

References 98 publications

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“…Most current metallic materials for implants have a much higher modulus than bone. For example, Ti-6Al-4V has a modulus of about 110 Gpa, while CoCrMo alloys have a modulus of 210 GPa ( Che Ghani et al, 2020 ) and Table 3 shows the modulus of elasticity of various biomedical alloys compared to bone. Therefore, new materials with low Young’s modulus and other bone-adapted mechanical properties need to be developed to avoid stress shielding at the bone-implant interface.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

Bio-high entropy alloys: Progress, challenges, and opportunities

Feng

Tang

Liu

et al. 2022

Front. Bioeng. Biotechnol.

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With the continuous progress and development in biomedicine, metallic biomedical materials have attracted significant attention from researchers. Due to the low compatibility of traditional metal implant materials with the human body, it is urgent to develop new biomaterials with excellent mechanical properties and appropriate biocompatibility to solve the adverse reactions caused by long-term implantation. High entropy alloys (HEAs) are nearly equimolar alloys of five or more elements, with huge compositional design space and excellent mechanical properties. In contrast, biological high-entropy alloys (Bio-HEAs) are expected to be a new bio-alloy for biomedicine due to their excellent biocompatibility and tunable mechanical properties. This review summarizes the composition system of Bio-HEAs in recent years, introduces their biocompatibility and mechanical properties of human bone adaptation, and finally puts forward the following suggestions for the development direction of Bio-HEAs: to improve the theory and simulation studies of Bio-HEAs composition design, to quantify the influence of composition, process, post-treatment on the performance of Bio-HEAs, to focus on the loss of Bio-HEAs under actual service conditions, and it is hoped that the clinical application of the new medical alloy Bio-HEAs can be realized as soon as possible.

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Section: Mechanical Propertiesmentioning

confidence: 99%

Bio-high entropy alloys: Progress, challenges, and opportunities

Feng

Tang

Liu

et al. 2022

Front. Bioeng. Biotechnol.

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“…In addition, SLM offers great possibilities in tailoring porous lattice structures with various unit cell types, cell sizes, and strut dimensions, which enables the tuning of the mechanical properties of SLM-built metallic implants to closely match those of human bone [ 39 , 40 ]. Comprehensive research has been conducted on the mechanical properties of additive-manufactured porous CoCrMo alloys via different, designed volume porosities [ 41 , 42 , 43 ] or heat treatment conditions to reduce the stiffness mismatch between bone and biomedical CoCrMo implants [ 24 , 25 , 44 ]. Furthermore, the analytical and simulation modeling analyses were generally used to predict the mechanical properties of porous structures [ 18 , 45 , 46 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of Porosity and Heat Treatment on Mechanical Properties of Additive Manufactured CoCrMo Alloys

et al. 2023

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To minimize the stress shielding effect of metallic biomaterials in mimicking bone, the body-centered cubic (bcc) unit cell-based porous CoCrMo alloys with different, designed volume porosities of 20, 40, 60, and 80% were produced via a selective laser melting (SLM) process. A heat treatment process consisting of solution annealing and aging was applied to increase the volume fraction of an ε-hexagonal close-packed (hcp) structure for better mechanical response and stability. In the present study, we investigated the impact of different, designed volume porosities on the compressive mechanical properties in as-built and heat-treated CoCrMo alloys. The elastic modulus and yield strength in both conditions were dramatically decreased with increasing designed volume porosity. The elastic modulus and yield strength of the CoCrMo alloys with a designed volume porosity of 80% exhibited the closest match to those of bone tissue. Different strengthening mechanisms were quantified to determine their contributing roles to the measured yield strength in both conditions. The experimental results of the relative elastic modulus and yield strength were compared to the analytical and simulation modeling analyses. The Gibson–Ashby theoretical model was established to predict the deformation behaviors of the lattice CoCrMo structures.

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“…niT (%) Na Figura 66 é observada da microestrutura das amostras obtidas por FP após processo GHANI et al, 2020;CORNACCHIA et al, 2022;HONG;YEOH, 2020;KIM, K. S. et al, 2020;RAZAVI et al, 2021;SAINI et al, 2021;SING et al, 2020) exeto pela elevada tensão máxima obtida especificamente para as amostras consolidadas com P de 147 W. Com base na literatura, mesmo em níveis de P superiores que 200 W, amostras submetidadas a tração não obtiveram valores correspondentes ao observado.…”

Section: Estudo De Solubilizaçãounclassified

Fusão em leito de pó a laser da liga de Co-Cr-Mo: propriedades mecânicas e microestrutura após tratamentos térmicos

Mergulhão¹

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MERGULHÃO, Marcello V. Laser powder bed fusion of Co-Cr-Mo alloy: mechanical properties and microstructure after heat treatment. 2022. 154 p. Tese (Doutorado em Tecnologia Nuclear) -Instituto de Pesquisas Energéticas e Nucleares -IPEN-CNEN/SP. São Paulo. Powder bed fusion by laser (PBF-L) stands out among the main processes of additive manufacturing (AM) for manufacturing parts with highly complex geometry and weight relief, specially in the aerospace and biomedical industries. The adequacy of the PBF-L process parameters and the performance of post-processing by heat treatments are fundamental to ensure the quality and optimize the useful life of medical prostheses and implants. Manufacturing Co-Cr-Mo alloys by PBF-L are the focus of recurrent research because they have great potential in the fabrication of customized medical and dental prostheses. So far, previous studies emphasize the optimization of macroscopic properties, such as aging behavior. In Co-Cr-Mo alloys there are few literatures covering the processing window and its relationship with the microstructural and mechanical characteristics. This work presents an investigation of the main parameters of the PBF-L process in a standardized Co-Cr-Mo alloy ASTM F75 through the effects and influences of laser additive manufacturing through mechanical analysis and microstructure obtained in the samples.Additionally, heat treatment by solubilization was carried out in the PBF-L Co-Cr-Mo alloy processed. The analyzes obtained were compared with the conventional precision casting route. The results obtained allowed to determine the appropriate FLP-L process parameters for the Co-Cr-Mo alloy, allowing a microstructure with no defects, obtaining densifications higher than 99%. The investigated process-property relationships are important to define the influence of the analyzed parameters in the processing and can support the establishment of protocols in the standardization of the Co-Cr-Mo alloy FLP-L process.

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Experimental investigation of biological and mechanical properties of CoCrMo based selective laser melted metamaterials for bone implant manufacturing

Cited by 11 publications

References 98 publications

Bio-high entropy alloys: Progress, challenges, and opportunities

Bio-high entropy alloys: Progress, challenges, and opportunities

Effect of Porosity and Heat Treatment on Mechanical Properties of Additive Manufactured CoCrMo Alloys

Fusão em leito de pó a laser da liga de Co-Cr-Mo: propriedades mecânicas e microestrutura após tratamentos térmicos

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