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View article: Localized thermal treatment of Ni–Ti thin wires under controlled tensile load
Localized thermal treatment of Ni–Ti thin wires under controlled tensile load Open
Ni-Ti-based shape memory alloys (SMAs) are widely used in aerospace, bioengineering, and robotics due to their unique properties such as shape memory effect, superelasticity, high strength, corrosion resistance, and biocompatibility. These…
View article: Towards the development of reliable finite element models of Ti6Al4V trabecular structures fabricated via laser powder bed fusion for biomedical applications
Towards the development of reliable finite element models of Ti6Al4V trabecular structures fabricated via laser powder bed fusion for biomedical applications Open
Additive manufacturing technologies are commonly adopted for the fabrication of trabecular-based orthopedic prostheses made of titanium alloys due to their ability in producing complex and intricate designs. In this scenario, the use of fi…
View article: An in-depth study of a thin-wall origami-inspired NiTi structure fabricated through laser powder bed fusion
An in-depth study of a thin-wall origami-inspired NiTi structure fabricated through laser powder bed fusion Open
View article: Design and optimization of a new NiTi-based shape memory alloy structures for damping applications via additive manufacturing
Design and optimization of a new NiTi-based shape memory alloy structures for damping applications via additive manufacturing Open
Shape Memory Alloys (SMA), such as NiTi-based systems, are functional materials suitable for damping applications due to their pseudoelastic effect. This property allows to obtain simple, lightweight structures capable of absorbing energy …
View article: 3D printing of shape memory Alloys for complex architectures of smart structures
3D printing of shape memory Alloys for complex architectures of smart structures Open
Shape Memory Alloys (SMA) are materials used to design smart structures with intrinsic functional properties and improved efficiency. This is a key aspect of aerospace industry and makes SMA good candidates in this field. One of the most w…
View article: A Study of a Cryogenic CuAlMn Shape Memory Alloy
A Study of a Cryogenic CuAlMn Shape Memory Alloy Open
In extreme temperature environments, a newly emerging engineering application involves both the active and passive control of structures using cryogenic shape memory alloys, which are smart materials able to recover high deformation below …
View article: Additive manufacturing for orthopedic implants: morphological and material characterization of SLM thin Ti6Al4V samples
Additive manufacturing for orthopedic implants: morphological and material characterization of SLM thin Ti6Al4V samples Open
In the last decades, the orthopedic industry has increasingly adopted Additive Manufacturing (AM) technologies, such as selective laser melting, to produce custom devices. Given their novelty with respect to discrete-size implants, New 201…
View article: Body temperature NiTi alloys: effect of the heat treatment on the functional thermo-mechanical properties
Body temperature NiTi alloys: effect of the heat treatment on the functional thermo-mechanical properties Open
The design process of devices based on shape memory alloys (SMA) is particularly demanding. It is fundamental the investigation of parameters describing the thermo-mechanical behavior of these materials, such as the phase transformation te…
View article: Proof of concept of a self-tightening needle-less suture using a NiTi shape memory alloy
Proof of concept of a self-tightening needle-less suture using a NiTi shape memory alloy Open
Among surgical procedures, suturing is considered simple. However, in some situations, suturing is not easy or feasible. Here, we present proof of concept of a new self-tightening needle-less suture made of a NiTi alloy. The new device is …
View article: A Review on Shape Memory Alloys with Martensitic Transition at Cryogenic Temperatures
A Review on Shape Memory Alloys with Martensitic Transition at Cryogenic Temperatures Open
Shape memory alloys (SMA) are functional materials known for their shape memory and pseudoelastic properties, which originated from a thermoelastic phase transition between two solid phases: austenite and martensite. The ranges of temperat…
View article: Additive fabrication and experimental validation of a lightweight thermoelectric generator
Additive fabrication and experimental validation of a lightweight thermoelectric generator Open
We develop a thermoelectric generator based on catalytic combustion and operating in the low power range (up to 10 W). Considering the target of small-scale thermoelectric generators, the additive technique was chosen as an enabling techno…
View article: Preliminary design and modeling of mini channels to enhance heat transfer in a millimetric catalytic combustor
Preliminary design and modeling of mini channels to enhance heat transfer in a millimetric catalytic combustor Open
Mini channel solution is used in devices that require a high density of transmitted thermal power as a very large-scale integration design in computer systems and compact exchangers. Furthermore, the mini channels are extensively investiga…
View article: Damping property of a NiTi auxetic structure fabricated through selective laser melting
Damping property of a NiTi auxetic structure fabricated through selective laser melting Open
The present work aims at studying the damping response of a NiTi auxetic structure fabricated through additive manufacturing. Furthermore, an electropolishing route has been accounted for improving the roughness on the external surface of …
View article: Development of a lightweight thermoelectric generator taking advantage of additive manufacturing technologies
Development of a lightweight thermoelectric generator taking advantage of additive manufacturing technologies Open
The authors have requested that this preprint be removed from Research Square.
View article: Biomedical NiTi and β-Ti Alloys: From Composition, Microstructure and Thermo-Mechanics to Application
Biomedical NiTi and β-Ti Alloys: From Composition, Microstructure and Thermo-Mechanics to Application Open
A comprehensive, bottoms-up characterization of two of the most widely used biomedical Ti-containing alloys, NiTi and β-Ti, was carried out applying a novel combination of neutron diffraction, neutron prompt-gamma activation, surface morph…
View article: Study of a Torque Limiter Based on NiTi Pseudoelastic Tapes
Study of a Torque Limiter Based on NiTi Pseudoelastic Tapes Open
Herein, a new torsional device based on shape memory alloy elements and operating as torque limiter is presented. It consists of a set of pseudoelastic NiTi tapes working in series configuration. The tapes are assembled radially with respe…
View article: Microstructural and Thermo-Mechanical Characterization of Cast NiTiCu20 Shape Memory Alloy
Microstructural and Thermo-Mechanical Characterization of Cast NiTiCu20 Shape Memory Alloy Open
Among NiTi-based alloys, one of the most promising and exploited alloys is NiTiCu, since the addition of Cu in substitution of Ni in the binary equiatomic NiTi has a significant influence on the martensitic transformation and the thermomec…
View article: A Study on Damping Property of NiTi Elements Produced by Selective Laser‐Beam Melting
A Study on Damping Property of NiTi Elements Produced by Selective Laser‐Beam Melting Open
The damping properties of NiTi elements produced through selective laser melting are investigated by tuning the process parameters. To this end, twelve parameters’ sets are selected to fabricate fully‐dense NiTi specimens. Damping is evalu…
View article: Towards an understanding of the functional properties of NiTi produced by powder bed fusion
Towards an understanding of the functional properties of NiTi produced by powder bed fusion Open
View article: Physical Characterization of Sintered NiMnGa Ferromagnetic Shape Memory Alloy
Physical Characterization of Sintered NiMnGa Ferromagnetic Shape Memory Alloy Open
The present work focused on the microstructural, thermal, electrical, and damping characterization of NiMnGa samples produced through a powder pressing and a sintering process; the effect of sintering times and of the starting powder size …
View article: Investigation of microstructural influence on entropy change in magnetocaloric polycrystalline samples of NiMnGaCu ferromagnetic shape memory alloy
Investigation of microstructural influence on entropy change in magnetocaloric polycrystalline samples of NiMnGaCu ferromagnetic shape memory alloy Open
View article: Tailoring thermomechanical treatment of Ni-Fe-Ga melt-spun ribbons for elastocaloric applications
Tailoring thermomechanical treatment of Ni-Fe-Ga melt-spun ribbons for elastocaloric applications Open
View article: Composition―Nanostructure Steered Performance Predictions in Steel Wires
Composition―Nanostructure Steered Performance Predictions in Steel Wires Open
Neutron scattering in combination with scanning electron and atomic force microscopy were employed to quantitatively resolve elemental composition, nano- through meso- to metallurgical structures and surface characteristics of two commerci…
View article: Selective Laser Melting Of NiTi Alloys
Selective Laser Melting Of NiTi Alloys Open
View article: Study of pseudoelastic systems for the design of complex passive dampers: static analysis and modeling
Study of pseudoelastic systems for the design of complex passive dampers: static analysis and modeling Open
This work presents an experimental and numerical analysis of several parallel systems of NiTi pseudoelastic wires. Standard tensile tests were accomplished to evaluate the global damping capacity, the energy dissipated per cycle and the ma…
View article: Design and experimental characterization of a NiTi-based, high-frequency, centripetal peristaltic actuator
Design and experimental characterization of a NiTi-based, high-frequency, centripetal peristaltic actuator Open
Development and experimental testing of a peristaltic device actuated by a single shape-memory NiTi wire are described. The actuator is designed to radially shrink a compliant silicone pipe, and must work on a sustained basis at an actuati…
View article: On the thermo-mechanical behavior of NiTi shape memory elements for potential smart micro-actuation applications
On the thermo-mechanical behavior of NiTi shape memory elements for potential smart micro-actuation applications Open
Among smart and functional materials, the shape memory alloys are enabling the development of a new class of devices for the automotive, aerospace, biomedical, and mechanical applications based on the shape memory and superelastic effects.…