Additive manufacturing of Ti-Ni bimetallic structures

Afrouzian, Ali; Groden, Cory; Field, David P.; Bose, Susmita; Bandyopadhyay, Amit

doi:10.1016/j.matdes.2022.110461

Cited by 21 publications

(11 citation statements)

References 46 publications

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“…For instance, the higher the porosity content, the lower the elastic modulus and corrosion resistance. On the other hand, a smaller grain size can improve the hardness and strength of the material in accordance with the Hall-Petch strengthening mechanism [148][149][150][151]. The surface roughness of the material determines its biological response; it is reported that a substrate with a higher surface roughness facilitates protein absorption, promoting osteoblast cell adhesion [152].…”

Section: Powder-bed Fusion (Pbf) 221 Laser Powder-bed Fusion (Lpbf)mentioning

confidence: 83%

Additive Manufacturing: An Opportunity for the Fabrication of Near-Net-Shape NiTi Implants

Safavi

Bordbar‐Khiabani

Khalil‐Allafi

et al. 2022

JMMP

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Nickel–titanium (NiTi) is a shape-memory alloy, a type of material whose name is derived from its ability to recover its original shape upon heating to a certain temperature. NiTi falls under the umbrella of metallic materials, offering high superelasticity, acceptable corrosion resistance, a relatively low elastic modulus, and desirable biocompatibility. There are several challenges regarding the processing and machinability of NiTi, originating from its high ductility and reactivity. Additive manufacturing (AM), commonly known as 3D printing, is a promising candidate for solving problems in the fabrication of near-net-shape NiTi biomaterials with controlled porosity. Powder-bed fusion and directed energy deposition are AM approaches employed to produce synthetic NiTi implants. A short summary of the principles and the pros and cons of these approaches is provided. The influence of the operating parameters, which can change the microstructural features, including the porosity content and orientation of the crystals, on the mechanical properties is addressed. Surface-modification techniques are recommended for suppressing the Ni ion leaching from the surface of AM-fabricated NiTi, which is a technical challenge faced by the long-term in vivo application of NiTi.

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Section: Powder-bed Fusion (Pbf) 221 Laser Powder-bed Fusion (Lpbf)mentioning

confidence: 83%

Additive Manufacturing: An Opportunity for the Fabrication of Near-Net-Shape NiTi Implants

Safavi

Bordbar‐Khiabani

Khalil‐Allafi

et al. 2022

JMMP

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“…The DED-based AM is a laser-based method capable of manufacturing multi-material, functionally gradient, and reinforced composite structures and alloys by switching between metal and/or ceramic feedstocks during printing. 7,13,14 Moreover, DED gives design flexibility as different powders can be premixed and then printed into three-dimensional and complex-shaped structures from a computer-aided design by adding materials layer by layer. However, one of the significant challenges of the DED-based AM is that the final part needs additional machining to separate them from the substrate and reach the desired surface quality and geometry.…”

Section: Introductionmentioning

confidence: 99%

“…5 To make this idea possible, additive manufacturing (AM) techniques can fabricate bottom-up and layer-by-layer structures using available in situ resources. 6,7 Further, if structural components or coatings can be manufactured using in situ resources, it minimizes the mass burden required of extraterrestrial missions. AM's ability to manufacture customized structures with varying designs makes it an attractive approach for space exploration toward extended human or robotic missions in the coming days.…”

Section: Introductionmentioning

confidence: 99%

“…The ability to manufacture and repair structural components in space is critical for future space missions to Moon, Mars, and beyond the International Space Station 5 . To make this idea possible, additive manufacturing (AM) techniques can fabricate bottom‐up and layer‐by‐layer structures using available in situ resources 6,7 . Further, if structural components or coatings can be manufactured using in situ resources, it minimizes the mass burden required of extraterrestrial missions.…”

Section: Introductionmentioning

confidence: 99%

“…This work is focused on the laser‐DED‐based AM approach. The DED‐based AM is a laser‐based method capable of manufacturing multi‐material, functionally gradient, and reinforced composite structures and alloys by switching between metal and/or ceramic feedstocks during printing 7,13,14 . Moreover, DED gives design flexibility as different powders can be premixed and then printed into three‐dimensional and complex‐shaped structures from a computer‐aided design by adding materials layer by layer.…”

Section: Introductionmentioning

confidence: 99%

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Martian regolith—Ti6Al4V composites via additive manufacturing

Afrouzian

Traxel

Bandyopadhyay

2022

Int J Applied Ceramic Tech

Self Cite

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In order to investigate the in-space in situ resource utilization, directed energy deposition (DED)-based additive manufacturing (AM) has been utilized to process Martian regolith-Ti6Al4V (Ti64) composites. Here we investigated the processability of depositing 5, 10, and 100 wt% of Martian regolith premixed with Ti6Al4V using laser-based DED, analyzing the printed structure via X-ray diffraction, Vicker's microhardness, scanning electron microscopic imaging, and wear characteristics utilizing an abrasive water jet cutter to simulate abrasive environments on the Martian surface. The results indicate that the surface roughness and hardness of the composites increase with respect to the Martian regolith' weight percentage due to in situ ceramic reinforcement. For instance, i5-wt% addition of Martian regolith increased the Vicker's microhardness from 366 ± 6 HV 0.2 for as-printed Ti64 to 730 ± 27 HV 0.2 while maintaining similar abrasive wear performance as Ti6Al4V. The results point toward laser-based AM for fabricating Ti64-Martian regolith composites with comparable properties. The study also reveals promising results in limiting the mass burden for future space missions, resulting in cheaper and easier launches.

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