Preparation of TiNbTaZrMo high-entropy alloy with tunable Young's modulus by selective laser melting

Feng, Junyi; Wei, Daixiu; Zhang, Peilei; Yu, Zhishui; Liu, Changxi; Lü, Weijie; Wang, Kuaishe; Yan, Hua; Zhang, Lai-Chang; Wang, Liqiang

doi:10.1016/j.jmapro.2022.11.046

Cited by 48 publications

(8 citation statements)

References 43 publications

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“…Other methods to modify Ti alloys produced by AM have been suggested, including tailoring of the bulk Ti alloy composition (e.g., a TiNbTaZrMo high‐entropy alloy 24 and the generation of passive films on AM TiAl6V4 alloys by exposure to NaCl solutions 25 . However, the biological effects of these modifications were not examined.…”

Section: Discussionmentioning

confidence: 99%

“…22 Recently, other methods to modify Ti-alloy implants produced by AM have been reported, although the effects of these modifications on osseointegration were not evaluated. [23][24][25] We have developed a nonline-of-sight calciothermic reaction (CaR)-based process to generate a well-controlled micro-to-nanoscale surface topography on dense TiAl6V4 disks and implants. 23 This process involves: (i) the generation of a thin conformal oxide (rutile TiO 2 -based) layer on the alloy surface by low-temperature thermal oxidation in air; (ii) reduction of the oxide with heated calcium vapor to create an external CaO layer on a porous Ti layer; and (iii) selective CaO dissolution to yield a thin surface layer of porous Ti bonded to the underlying dense TiAl6V4 alloy.…”

Section: Introductionmentioning

confidence: 99%

“…However, the characteristics of surfaces generated within the innermost regions of a macroporous implant by such solution‐based methods can differ from the characteristics of exterior surfaces produced by grit blasting 22 . Recently, other methods to modify Ti‐alloy implants produced by AM have been reported, although the effects of these modifications on osseointegration were not evaluated 23–25 …”

Section: Introductionmentioning

confidence: 99%

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Internal surface modification of additively manufactured macroporous TiAl6V4 biomimetic implants via a calciothermic reaction‐based process and osteogenic in vivo responses

Berger,

Cohen,

Deng

et al. 2023

J Biomed Mater Res

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Three‐dimensional macroporous titanium–aluminum–vanadium (TiAl6V4) implants produced by additive manufacturing (AM) can be grit blasted (GB) to yield microtextured exterior surfaces, with additional micro/nano‐scale surface features provided by subsequent acid etching (AE). However, the line‐of‐sight nature of GB causes the topography of exterior GB + AE‐modified surfaces to differ from internal GB‐inaccessible surfaces. Previous in vitro studies using dense TiAl6V4 substrates indicated that a nonline‐of‐sight, calciothermic‐reaction (CaR)‐based process provided homogeneous osteogenic nanotextures on GB + AE surfaces, suggesting it could be used to achieve a homogeneous nanotopography on external and internal surfaces of macroporous AM constructs. Macroporous TiAl6V4 (3D) constructs were produced by direct laser melting and modified by GB + AE, with the CaR process then applied to 50% of constructs (3DCaR). The CaR process yielded nanoporous/nanorough internal surfaces throughout the macroporous constructs. Skeletally mature, male Sprague–Dawley rats were implanted with these constructs using a cranial on‐lay model. Prior to implantation, a Cu++‐free click hydrogel was applied to half of the constructs (3D + H, 3DCaR + H) to act as a challenge to osseointegration. Osseointegration was compared between the four implant groups (3D, 3DCaR, 3D + H, 3DCaR + H) at 4w. 3D + H implants exhibited lower bone volume (BV) and percent bone ingrowth (%BI) than the 3D implants. In contrast, osseointegrated 3DCaR + H implants had similar BV and %BI as the 3DCaR implants. Implant pull‐off forces correlated with these results. In vitro analyses indicated that human bone marrow stromal cells (MSCs) exhibited enhanced production of osteoblast differentiation markers and factors associated with osteogenesis when grown on CaR‐modified 3D substrates relative to control (TCPS) substrates. This work confirms that the CaR process provides osteogenic nanotextures on internal surfaces of macroporous 3D implants, and suggests that CaR‐modified surfaces can promote osseointegration in cases where osteogenesis is impaired.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Internal surface modification of additively manufactured macroporous TiAl6V4 biomimetic implants via a calciothermic reaction‐based process and osteogenic in vivo responses

Berger,

Cohen,

Deng

et al. 2023

J Biomed Mater Res

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“…Proceeding in this direction, Ti 1.5 NbTa 0.5 ZrMo 0.5 bio‐HEA was prepared via SLM with desirably low Young's modulus. [ 51 ] The rapid solidification via SLM prevented the elemental segregation which is more prominent in arc melting techniques commonly used to fabricate bio‐HEAs. Due to their latent imminent impact on people's lives, the 3D‐printed bio‐HEAs are gaining attention in the present day.…”

Section: Fabrication Methodsmentioning

confidence: 99%

Deformation Behavior of 3D‐Printed High‐Entropy Alloys: A Critical Review

Bajaj,

Feng,

et al. 2023

Adv Eng Mater

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The 3D‐printing of high‐entropy alloys (HEAs) is capable of enhancing the design and manufacturing flexibilities for the novel materials. Owing to the rapid solidification, the 3D‐printed HEAs exhibit markedly different microstructures than their conventionally‐manufactured equivalents, leading to peculiar mechanical properties. Many additively‐manufactured HEAs also break down the strength‐ductility trade‐off dilemma. Novel dynamics regarding the simultaneous and sequential nature of deformation mechanisms are emerging through recent intensive research on these materials. Herein the deformation behavior of 3D‐printed HEAs is reviewed and explained on the basis of the latest advances in this area. A comprehensive picture regarding the role of cellular dislocation networks, twinning‐induced plasticity (TWIP), and transformation‐induced plasticity (TRIP) in the monotonic and cyclic deformation of 3D‐printed HEAs is presented. Special emphasis is placed on fatigue characteristics due to the enormous interest in this burgeoning area. The effect of post‐fabrication thermomechanical processing on plasticity is discussed along with the microstructural evolution in the 3D‐printed HEAs. Several innovative developments that carry latent potential for further research are also deliberated in this review. Finally, the present understanding of the deformation behavior of 3D‐printed HEAs is summarized while gauging the future directions.This article is protected by copyright. All rights reserved.

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“…Consequently, lightweight and high-strength Ti alloys are emerged as promising candidates for aerospace applications. Notably, near-β Ti alloys have attracted considerable attention in fields like aviation, aerospace, shipbuilding, and biomedicine due to their remarkable attributes, including high specific strength, excellent fracture toughness, and superior corrosion, and oxidation resistance [8][9][10][11][12][13]. One notable near-β Ti alloy is Ti-5Al−5Mo−5V−3Cr−1Zr (Ti-55531).…”

Section: Introductionmentioning

confidence: 99%

Effect of initial microstructure on phase transformation and mechanical properties of Ti–3Al–5Mo–4Cr–2Zr–1Fe alloy

Zhu

Xue

et al. 2023

Materials Science and Technology

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Phase transformation, microstructure evolution, and mechanical properties of Ti–3Al–5Mo–4Cr–2Zr–1Fe alloy were investigated during a continuous heating process. Three microstructures, specifically lath, duplex, and lamellar structures, were examined. The activation energies for phase transition in these structures were measured as 277, 220, and 193 kJ mol−1, respectively. The phase transition follows: For the lath structure, β transforms into αacicular (550–660°C), αacicular converts to β (660–785°C), αlath does to β (660–850°C); For the duplex structure, β transforms into αacicular (545–660°C), αacicular converts to β (660–770°C), αlath does to β (660–850°C); For the lamellar structure, β transforms into αsecondary (560–615°C), αsecondary converts to β (615–705°C), αlamellar dose to β (615–850°C). The lath and duplex structures exhibited favorable comprehensive properties compared to lamellar microstructure.

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Preparation of TiNbTaZrMo high-entropy alloy with tunable Young's modulus by selective laser melting

Cited by 48 publications

References 43 publications

Internal surface modification of additively manufactured macroporous TiAl6V4 biomimetic implants via a calciothermic reaction‐based process and osteogenic in vivo responses

Internal surface modification of additively manufactured macroporous TiAl6V4 biomimetic implants via a calciothermic reaction‐based process and osteogenic in vivo responses

Deformation Behavior of 3D‐Printed High‐Entropy Alloys: A Critical Review

Effect of initial microstructure on phase transformation and mechanical properties of Ti–3Al–5Mo–4Cr–2Zr–1Fe alloy

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