Synthesis and characterization of Ti-27.5Nb alloy made by CLAD® additive manufacturing process for biomedical applications

Fischer, Marie; Laheurte, Pascal; Acquier, Philippe; Joguet, David; Peltier, Laurent; Petithory, Tatiana; Anselme, Karine; Mille, Pierre

doi:10.1016/j.msec.2017.02.060

Cited by 49 publications

(26 citation statements)

References 29 publications

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“…The vast majority of the investigation in the field of AM concerns the influence of the processing parameters on the properties and microstructure of the alloys [ 18 , 55 , 56 ] or the fabrication of porous structures [ 11 , 57 ]. Fischer et al [ 58 ] conducted cyclic tests on Ti-27.5Nb fabricated using the CLAD technique but no evidence of superelasticity was reported. The presented results revealed that it is possible to obtain relatively good superelastic properties, induced at a high stress near 700 MPa, in alloys fabricated using AM techniques; however, it is necessary to include the effect of oxygen contamination during the development of the alloy composition.…”

Section: Resultsmentioning

confidence: 99%

Superelastic Behavior of Ti-Nb Alloys Obtained by the Laser Engineered Net Shaping (LENS) Technique

et al. 2020

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The effect of Nb content on microstructure, mechanical properties and superelasticity was investigated for a series of Ti-xNb alloys, fabricated by the laser engineered net shaping method, using elemental Ti and Nb powders. The microstructure of as-deposited materials consisted of columnar β-phase grains, elongated in the built direction. However, due to the presence of undissolved Nb particles during the deposition process, an additional heat treatment was necessary. The observed changes in mechanical properties were explained in relation to the phase constituents and deformation mechanisms. Due to the elevated oxygen content in the investigated materials (2 at.%), the specific deformation mechanisms were observed at lower Nb content in comparison to the conventionally fabricated materials. This made it possible to conclude that oxygen increases the stability of the β phase in β–Ti alloys. For the first time, superelasticity was observed in Ti–Nb-based alloys fabricated by the additive manufacturing method. The highest recoverable strain of 3% was observed in Ti–19Nb alloy as a result of high elasticity and reverse martensitic transformation stress-induced during the loading.

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Section: Resultsmentioning

confidence: 99%

Superelastic Behavior of Ti-Nb Alloys Obtained by the Laser Engineered Net Shaping (LENS) Technique

et al. 2020

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“…Authors have demonstrated the great metallurgical bonding due the consecutive remelting (Mahamood and Akinlabi, 2015) ; Farayibi et al have demonstrated the feasibility of functionally graded Ti6Al4V wire and WC powder for different powder feed rate of WC. The addition of WC improve hardness and wear resistance (Farayibi et al, 2013) ; Ti-Nb alloys were studied with fixe composition such as Ti-45Nb or Ti-27,5at.%Nb (Fischer et al, 2017; ⁎ Corresponding author. E-mail address: pascal.laheurte@univ-lorraine.fr (P. Laheurte).…”

Section: Introductionmentioning

confidence: 99%

An application of differential injection to fabricate functionally graded Ti-Nb alloys using DED-CLAD® process

Schneider-Maunoury

Weiss

Perroud

et al. 2019

Journal of Materials Processing Technology

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The aim of this paper is twofold: firstly, to compare the microstructural and the mechanical properties of Ti-44Nb samples manufactured pre-alloyed powder and differential injection, and secondly, to demonstrate the feasibility of the differential injection method included in the DED-CLAD ® process, to manufacture functionally graded Ti-Nb alloys. Functionally graded materials (FGM) are promising new materials which are perfectly adapted to custom-made parts with various properties for specific applications. In FGMs, titanium and niobium ratios were modified in different steps to create the variation in alloy composition owing to a double-powder feeder. Mechanical analysis and SEM observations show the variation along the deposition depending on the chemical composition. Chemical analysis revealed the homogeneous repartition of the powder mixture as well as the nominal composition of each deposition. Mechanical tests showed a decrease of the microhardness with the increase of Nb content. The elastic modulus was found to be the lowest for Ti-40Nb.

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“…Currently, the most promising materials are β-phase Ti alloys, which have been widely described in the scientific literature as having an emphasis on cast and forged materials [ 53 , 54 , 55 , 56 ]. They provide increased cell viability and improved mechanical compatibility with the cortical bone because of an intrinsically reduced elastic modulus when compared to Ti-6Al-4V [ 19 , 57 , 58 , 59 ], which crystalizes as a mixture of the α and β-phase.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties of a Newly Additive Manufactured Implant Material Based on Ti-42Nb

et al. 2018

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The application of Ti-6Al-4V alloy or commercially pure titanium for additive manufacturing enables the fabrication of complex structural implants and patient-specific implant geometries. However, the difference in Young’s modulus of α + β-phase Ti alloys compared to the human bone promotes stress-shielding effects in the implant–bone interphase. The aim of the present study is the mechanical characterization of a new pre-alloyed β-phase Ti-42Nb alloy for application in additive manufacturing. The present investigation focuses on the mechanical properties of SLM-printed Ti-42Nb alloy in tensile and compression tests. In addition, the raw Ti-42Nb powder, the microstructure of the specimens prior to and after compression tests, as well as the fracture occurring in tensile tests are characterized by means of the SEM/EDX analysis. The Ti-42Nb raw powder exhibits a dendrite-like Ti-structure, which is melted layer-by-layer into a microstructure with a very homogeneous distribution of Nb and Ti during the SLM process. Tensile tests display Young’s modulus of 60.51 ± 3.92 GPa and an ultimate tensile strength of 683.17 ± 16.67 MPa, whereas, under a compressive load, a compressive strength of 1330.74 ± 53.45 MPa is observed. The combination of high mechanical strength and low elastic modulus makes Ti-42Nb an interesting material for orthopedic and dental implants. The spherical shape of the pre-alloyed material additionally allows for application in metal 3D printing, enabling the fabrication of patient-specific structural implants.

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Synthesis and characterization of Ti-27.5Nb alloy made by CLAD® additive manufacturing process for biomedical applications

Cited by 49 publications

References 29 publications

Superelastic Behavior of Ti-Nb Alloys Obtained by the Laser Engineered Net Shaping (LENS) Technique

Superelastic Behavior of Ti-Nb Alloys Obtained by the Laser Engineered Net Shaping (LENS) Technique

An application of differential injection to fabricate functionally graded Ti-Nb alloys using DED-CLAD® process

Mechanical Properties of a Newly Additive Manufactured Implant Material Based on Ti-42Nb

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