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

Schneider-Maunoury, Catherine; Weiss, Laurent; Perroud, Olivier; Joguet, David; Boisselier, Didier; Laheurte, Pascal

doi:10.1016/j.jmatprotec.2019.01.018

Cited by 33 publications

(19 citation statements)

References 35 publications

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“…Using X-ray diffraction patterns, the phases present in similar additively manufactured Ti-xNb alloys were identified in a previous paper for various chemical compositions [34]. It was shown that the Ti deposition consisted of a hexagonal α'-phase formed by the rapid cooling of columnar beta grains, and that when Nb content is ramped up to 25%, the high-temperature bcc β-phase was entirely retained.…”

Section: Comparison Of Young's Modulus Depending On the Characterizatmentioning

confidence: 99%

On the use of instrumented indentation to characterize the mechanical properties of functionally graded binary alloys manufactured by additive manufacturing

Schneider-Maunoury

Albayda

Bartier

et al. 2020

Materials Today Communications

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The mechanical properties of a Ti-xNb functionally graded material (FGM) created by using an additive manufacturing process (CLAD®) were obtained using a spherical instrumented indentation test (IIT). The aim of this paper is to demonstrate the great suitability of the indentation test coupled with FGM for not only obtaining the hardness of a material, but also obtaining other mechanical properties such as Young's modulus, yield stress and the work-hardening exponent for heterogeneous materials. In the first step, results obtained from the instrumented indentation test were compared with those obtained from the tensile test for the same materials. These results show that these two tests highlight a similar evolution in the mechanical properties. In the second step, and after validating the efficiency of the IIT in obtaining mechanical properties, the FGM Ti-xNb was successfully identified using only IIT. This paper demonstrates that the different mechanical properties of all the compositions of a phase diagram can be measured very easily and quickly while minimizing the number of samples.

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Section: Comparison Of Young's Modulus Depending On the Characterizatmentioning

confidence: 99%

On the use of instrumented indentation to characterize the mechanical properties of functionally graded binary alloys manufactured by additive manufacturing

Schneider-Maunoury

Albayda

Bartier

et al. 2020

Materials Today Communications

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“…The microstructure features of the different graded materials in their as-deposited states has been detailed previously [34,35]. The main features are just recalled in Figure 1b,c for the sake of clarity.…”

Section: Evolution Of the Microstructure Along The Gradientmentioning

confidence: 99%

“…The powders and manufacturing data (power, speed, pitch, etc.) of the samples have been detailed in the works of Schneider et al [34,35]. The FGM walls were cut into 1.5 mm thick slices.…”

Section: Sample Preparationmentioning

confidence: 99%

“…The evolution of the microstructure for the Ti-Nb and TA64-Mo walls shared a number of aspects and the features shown in Figure 1b,c for TA64-Mo pertain for the other FGM sample. Because of the fast cooling rate [34,35], the initial layers of Ti or Ti6Al4V were characterized respectively by a Widmanstätten or a martensitic α' microstructure, issued from the high temperature parent phase nucleated from the melt (Figure 1c). With the addition of Nb or Mo, the microstructure became beta equiaxed with a decreasing grain size as the alloying element amount increased (Figure 1b).…”

Section: Evolution Of the Microstructure Along The Gradientmentioning

confidence: 99%

“…To this end, FGMs have been made based on the Ti-Nb and Ti6Al4V-Mo constituents and then treated by SMAT. The FGMs compositions range from 100% Ti to 100% Nb as well as 100% Ti6Al4V to 100% Mo and were manufactured with a DED technique called CLAD® [34,35]. The FGMs were investigated in their polished (P), SMATed (S) and SMATed + polished (S+P) conditions then human mesenchymal stem cells were deposited and counted as function of time from three up to 21 days.…”

Section: Introductionmentioning

confidence: 99%

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On the Use of Functionally Graded Materials to Differentiate the Effects of Surface Severe Plastic Deformation, Roughness and Chemical Composition on Cell Proliferation

Weiss

Nessler

Novelli

et al. 2019

Metals

Self Cite

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Additive manufacturing allows the manufacture of parts made of functionally graded materials (FGM) with a chemical gradient. This research work underlines that the use of FGM makes it possible to study mechanical, microstructural or biological characteristics while minimizing the number of required samples. The application of severe plastic deformation (SPD) by surface mechanical attrition treatment (SMAT) on FGM brings new insights on a major question in this field: which is the most important parameter between roughness, chemistry and microstructure modification on biocompatibility? Our study demonstrates that roughness has a large impact on adhesion while microstructure refinement plays a key role during the early stage of proliferation. After several days, chemistry is the main parameter that holds sway in the proliferation stage. With this respect, we also show that niobium has a much better biocompatibility than molybdenum when alloyed with titanium.

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Heat‐Resistant Intermetallic Compounds and Ceramic Dispersion Alloys for Additive Manufacturing: A Review

Yakubov

Kruzic

2022

Adv Eng Mater

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Many industries such as aerospace, power generation, and ground transportation demand structural materials with high specific strength at elevated temperatures. Up until now, many types of heat‐resistant materials including Ni‐based superalloys, intermetallic compounds, and dispersion‐strengthened alloys have been developed for specific applications in these industries. Moreover, with the recent development of additive manufacturing techniques, these industries can now benefit from the rapid prototyping abilities, geometric freedom, and increased mechanical properties that can be achieved through various additive manufacturing processes. With this in mind, the progress made in additive manufacturing of heat‐resistant intermetallic compounds and ceramic dispersion alloys is herein examined. A brief introduction is provided on the target industries, applications, and the compositions of heat‐resistant alloys of current research interest. Then, recent research on heat‐resistant intermetallic compounds and ceramic dispersion alloys fabricated by additive manufacturing processes such as laser powder bed fusion, laser direct energy deposition, and electron‐beam powder bed fusion are reviewed with information provided on microstructure, processing parameters, strengthening mechanisms, and mechanical properties. Finally, an outlook is provided with future research suggestions.

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

Cited by 33 publications

References 35 publications

On the use of instrumented indentation to characterize the mechanical properties of functionally graded binary alloys manufactured by additive manufacturing

On the use of instrumented indentation to characterize the mechanical properties of functionally graded binary alloys manufactured by additive manufacturing

On the Use of Functionally Graded Materials to Differentiate the Effects of Surface Severe Plastic Deformation, Roughness and Chemical Composition on Cell Proliferation

Heat‐Resistant Intermetallic Compounds and Ceramic Dispersion Alloys for Additive Manufacturing: A Review

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