Advances in Laser Additive Manufacturing of Ti-Nb Alloys: From Nanostructured Powders to Bulk Objects

Химич, М. А.; Prosolov, Konstantin A.; Mishurova, Tatiana; Evsevleev, Sergei; Monforte, Xavier; Teuschl, Andreas; Slezak, Paul; Ibragimov, Egor A.; Сапрыкин, А.А.; Kovalevskaya, Zh. G.; Дмитриев, А. И.; Bruno, Giovanni; Sharkeev, Yurii P.

doi:10.3390/nano11051159

Cited by 23 publications

(7 citation statements)

References 82 publications

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“…Sieving was carried out on automatic mesh sieve. The obtained powder mixture was LPBF-treated on a custommade "VARISKAF-100MVS" installation [13]. The applied LPBF mode was following: the laser beam power -100 W, the modulation frequency in the pulse-periodic mode -5 kHz, the scanning velocity -350 mm / s, the thickness of the powder layer -30 µm, the hatch space -100 µm.…”

Section: Methodsmentioning

confidence: 99%

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Influence of thermal treatment duration on structure and phase composition of additive Co-Cr-Mo alloy samples

et al. 2022

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Laser powder bed fusion (LPBF) requires application of powders with specific characteristics. These are near-spherical shape of particles, uniform elemental composition, typical particle size of 5 -70 µm, etc. Such powders are produced by spheroidization methods. They have such disadvantages as high cost and sale only in large quantities. There are publications describing application in LPBF powders, produced by the methods, alternative to spheroidization. In the current study, powders of pure raw Co, Cr and Mo were used for the production of Co-Cr-Mo powder mixture. Samples of Co-28 wt.% Cr-6 wt.% Mo alloy were produced by LPBF from this powder mixture. Due to the difference between melting temperatures of Co, Cr and Mo, inclusions of Cr and Mo were formed within the bulk of samples. Studies of phase and elemental composition, structure and microhardness of the as-produced samples and after post-treatment with varied duration are represented. As-produced samples have non-uniform elemental composition and are represented by the main Co-based phase. Increasing the annealing duration leads to the sequential dissolution of un-melted Cr and Mo inclusions. Complete dissolution of Cr particles was observed at 10 hours of treatment and complete dissolution of Mo particles was not observed after 20 hours of annealing. Microhardness non-linearly changes with the increasing duration of annealing. This is due to the phase transformations and diffusion processes occurring at such type of post-treatment. Complete dissolution of Mo-particles could be achieved by further increasing the annealing time or by varying the mode of laser powder bed fusion.

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Section: Methodsmentioning

confidence: 99%

“…The use of powders produced by mechanical alloying or sieving prompts the formation of non-uniform elemental distribution throughout the bulk of the product and can lead to the formation of non-desirable properties [12,13]. Such a result is possible in the case of powders having rather different melting temperatures [14].…”

Section: Introductionmentioning

confidence: 99%

Influence of thermal treatment duration on structure and phase composition of additive Co-Cr-Mo alloy samples

et al. 2022

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“…Recently, a successful application of HEBM powders as feedstock materials in laser-assisted additive manufacturing has been reported. Porous and dense materials were obtained by laser powder bed fusion of a Ti-Nb alloy produced by HEBM [80]. The powder particles were composed of nano-sized grains (up to 90 nm).…”

Section: Emerging Applications Of Hebm Powders and Future Research Di...mentioning

confidence: 99%

Materials Development Using High-Energy Ball Milling: A Review Dedicated to the Memory of M.A. Korchagin

Dudina

Bokhonov

2022

J. Compos. Sci.

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High-energy ball milling (HEBM) of powders is a complex process involving mixing, morphology changes, generation and evolution of defects of the crystalline lattice, and formation of new phases. This review is dedicated to the memory of our colleague, Prof. Michail A. Korchagin (1946–2021), and aims to highlight his works on the synthesis of materials by self-propagating high-temperature synthesis (SHS) and thermal explosion (TE) in HEBM mixtures as important contributions to the development of powder technology. We review results obtained by our group, including those obtained in collaboration with other researchers. We show the applicability of the HEBM mixtures for the synthesis of powder products and the fabrication of bulk materials and coatings. HEBM influences the parameters of synthesis as well as the structure, phase composition, phase distribution (in composites), and grain size of the products. The microstructural features of the products of synthesis conducted using the HEBM precursors are dramatically different from those of the products formed from non-milled mixtures. HEBM powders are also suitable as feedstock materials for depositing coatings by thermal spraying. The emerging applications of HEBM powders and future research directions in this area are discussed.

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“…Notably, the material selection for these implants is not arbitrary; it is dictated by the need for mechanical compatibility with bone tissue. Therefore, materials with similar mechanical properties to bone tissue, such as metals and their alloysincluding stainless steel, cobalt, titanium, zirconium, and tantalum-have been the choice of preference [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Influence of Cu Substitution on the Properties of Hydroxyapatite Targets and Deposited Coatings

et al. 2023

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In addressing the issue of optimizing the mechanical and electrochemical properties of hydroxyapatite (CaP) materials for biomedical applications, this research explored the incorporation of copper (Cu) into the material and scrutinized its impact through various processing stages, from powders to ceramics and finally to coatings. Our investigation indicated that the integration of CuO into CaP significantly changed the lattice parameters of hydroxyapatite from manufactured powders to sintered targets, indicating a structural evolution. Simultaneously, the change in the elemental composition and Ca/P ratio was also followed by each step from manufactured powders to deposited coatings. Mechanical testing revealed an impressive increase in the hardness of coatings to a high of 37 GPa for the 0.2CuO-CaP sample, a substantial improvement when compared to 13 GPa for pure Ti. The corrosion resistance of the coatings also improved, evidenced by the decrease in corrosion current density (Icorr) from 60.2 ± 5.2 nA/cm2 for pure Ti to a lower 3.9 ± 0.5 nA/cm2 for the CaP coating. Our study has revealed that the structural, mechanical, and electrochemical properties of CaP materials can be finely adjusted through the addition of Cu, promising advances in the realm of biomedical applications. Moreover, these results hint at the potential to tune the electrophysical characteristics of CaP coatings, an avenue for future exploration.

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Advances in Laser Additive Manufacturing of Ti-Nb Alloys: From Nanostructured Powders to Bulk Objects

Cited by 23 publications

References 82 publications

Influence of thermal treatment duration on structure and phase composition of additive Co-Cr-Mo alloy samples

Influence of thermal treatment duration on structure and phase composition of additive Co-Cr-Mo alloy samples

Materials Development Using High-Energy Ball Milling: A Review Dedicated to the Memory of M.A. Korchagin

Influence of Cu Substitution on the Properties of Hydroxyapatite Targets and Deposited Coatings

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