Manufacturing and characterization of in-situ alloyed Ti6Al4V(ELI)-3 at.% Cu by laser powder bed fusion

Vilardell, A.M.; Yadroitsev, Igor; Yadroitsava, Ina; Albu, Mihaela; Takata, Naoki; Kobashi, Makoto; Krakhmalev, Pavel; Kouprianoff, Dean; Kothleitner, Gerald; Plessis, Anton du

doi:10.1016/j.addma.2020.101436

Cited by 26 publications

(27 citation statements)

References 47 publications

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“…The in situ alloyed material displayed a chemical inhomogeneity where Cu tended to segregate at the fusion border of the three-dimensional printed tracks. Generally, the average of Cu in the material was 2.1–3.5 wt.%; meanwhile the fusion boundaries reached values between 19–23 wt.% [ 27 ]. Both Ti6Al4V(ELI) and Ti6Al4V(ELI)-3 at.% Cu materials showed a fine-needle α’ martensite microstructure which has been previously reported in the literature.…”

Section: Resultsmentioning

confidence: 99%

“…The combination of Ti alloys with Cu, such as Ti–Cu and Ti6Al4V–Cu, can result in a good combination of mechanical and biological properties that are promising for implant applications due to the increase in strength and hardness of the material and by providing good cytocompatibility with the organism [ 27 , 29 ]. After implantation, a rapid interaction takes place between the implant and the surrounding tissue and therefore, the initial cell attachment takes particular relevance.…”

Section: Discussionmentioning

confidence: 99%

“…Ti6Al4V(ELI) and in situ alloyed Ti6Al4V(ELI)-3 at.% Cu materials were produced by L-PBF, using an EOSINT M280 system (EOS GmbH, Krailling, Germany). The feedstock powders used in the present research, as well as the manufacturing process parameters and scanning strategy are described elsewhere [ 26 , 27 ]. For the in vitro study, thin, vertical walls of 1 mm thickness with high surface roughness were printed.…”

Section: Methodsmentioning

confidence: 99%

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In Vitro Characterization of In Situ Alloyed Ti6Al4V(ELI)-3 at.% Cu Obtained by Laser Powder Bed Fusion

et al. 2021

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The intensive cytotoxicity of pure copper is effectively kills bacteria, but it can compromise cellular behavior, so a rational balance must be found for Cu-loaded implants. In the present study, the individual and combined effect of surface composition and roughness on osteoblast cell behavior of in situ alloyed Ti6Al4V(ELI)-3 at.% Cu obtained by laser powder bed fusion was studied. Surface composition was studied using scanning electron microscopy, energy dispersive spectroscopy, and X-ray diffraction. Surface roughness measurements were carried out using confocal microscopy. In vitro osteoblast performance was evaluated by means of cell morphology observation of cell viability, proliferation, and mineralization. In vitro studies were performed at 1, 7, and 14 days of cell culture, except for cell mineralization at 28 days, on grounded and as-built (rough) samples with and without 3 at.% Cu. The addition of 3 at.% Cu did not show cell cytotoxicity but inhibited cell proliferation. Cell mineralization tends to be higher for samples with 3 at.% Cu content. Surface roughness inhibited cell proliferation too, but showed enhanced cell mineralization capacity and therefore, higher osteoblast performance, especially when as-built samples contained 3 at.% Cu. Cell proliferation was only observed on ground samples without Cu but showed the lowest cell mineralization.

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Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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In Vitro Characterization of In Situ Alloyed Ti6Al4V(ELI)-3 at.% Cu Obtained by Laser Powder Bed Fusion

et al. 2021

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“…Lazer gücünün az, ilerleme hızının yüksek olduğu durumlarda ergime tam oluşmamakta ve bu durumda yapı içerisinde süreksizliklerin oluşması ve var olanların artması, ilave olarak yüzey hatalarının çoğalması durumu söz konusu olmaktadır [47]. Diğer taraftan, yüksek lazer gücü ve düşük ilerleme hızında anahtar deliği (keyhole) şeklinde gözenek oluşumu söz konusu olmaktadır [48].…”

Section: Lazer Gücüunclassified

Manufacture and Dimensional Verification of a Gas Turbine Engine Compressor Blade Produced via Additive Manufacturing Method using Ti6Al4V

Saraçyakupoğlu

2021

Mühendis Ve Makina

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Bu çalışmada, bir gaz türbin motoruna ait kompresör palesinin, Ti6Al4V alaşımından Eklemeli Üretim (EÜ) yöntemiyle üretimi ve boyutsal doğrulama ölçümleri gerçekleştirilmiştir. Havacılık endüstrisinde yaygın kullanılan Direkt Metal Lazer Sinterleme (DMLS) yöntemi seçilmiştir. İmalattan sonra her bir palede 87 adet olmak üzere toplam 174 yüzey ölçümü gerçekleştirilmiştir. Ölçümlerde, katı modele oranla, 1 Nu'lı palede ortalama +0,0944/-0,0809 mm arasında, 2 Nu'lı palede ortalama +0,1093/-0,0978 mm değişim olduğu belirlenmiştir. Her iki paledeki geometrik değişimin birbiri ile tutarlı sonuçlar verdiği gözlemlenmiştir. Sonuç olarak, bir uçar-parçanın uçağa takılmasına yönelik uçuşa elverişlilik çalışmaları konusuna girmeden, bir gaz türbin motoru kompresör palelerinin Ti6Al4V alaşımından EÜ yöntemi ile üretilebileceği ortaya konulmuştur.

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“…The studies on in situ alloying are rapidly growing, as indicated by the recent investigations on this emerging field [31][32][33][34]. For instance, Vrancken et al [33] created a modified Ti6Al4V alloy with 10 wt.% of Mo, increasing its tensile strength and ductility with respect to the base alloy by LPBF.…”

Section: Introductionmentioning

confidence: 99%

In Situ Alloying of a Modified Inconel 625 via Laser Powder Bed Fusion: Microstructure and Mechanical Properties

Marchese

Beretta

Aversa

et al. 2021

Metals

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This study investigates the in situ alloying of a Ni-based superalloy processed by means of laser powder bed fusion (LPBF). For this purpose, Inconel 625 powder is mixed with 1 wt.% of Ti6Al4V powder. The modified alloy is characterized by densification levels similar to the base alloy, with relative density superior to 99.8%. The material exhibits Ti-rich segregations along the melt pool contours. Moreover, Ti tends to be entrapped in the interdendritic areas during solidification in the as-built state. After heat treatments, the modified Inconel 625 version presents greater hardness and tensile strengths than the base alloy in the same heat-treated conditions. For the solution annealed state, this is mainly attributed to the elimination of the segregations into the interdendritic structures, thus triggering solute strengthening. Finally, for the aged state, the further increment of mechanical properties can be attributed to a more intense formation of phases than the base alloy, due to elevated precipitation strengthening ability under heat treatments. It is interesting to note how slight chemical composition modification can directly develop new alloys by the LPBF process.

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Manufacturing and characterization of in-situ alloyed Ti6Al4V(ELI)-3 at.% Cu by laser powder bed fusion

Cited by 26 publications

References 47 publications

In Vitro Characterization of In Situ Alloyed Ti6Al4V(ELI)-3 at.% Cu Obtained by Laser Powder Bed Fusion

In Vitro Characterization of In Situ Alloyed Ti6Al4V(ELI)-3 at.% Cu Obtained by Laser Powder Bed Fusion

Manufacture and Dimensional Verification of a Gas Turbine Engine Compressor Blade Produced via Additive Manufacturing Method using Ti6Al4V

In Situ Alloying of a Modified Inconel 625 via Laser Powder Bed Fusion: Microstructure and Mechanical Properties

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