Diagrams of structural transitions of alloys based on TiNi and shape memory effects

Chernov, D. B.; Paskal, Yu. I.; Gyunter, V. É.; Monasevich, L. A.

doi:10.1007/bf00891610

Cited by 5 publications

(2 citation statements)

References 1 publication

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“…If one does not take into account high-temperature effects [l, 191, which have not been studied as yet, then the following fact can be considered to be ascertained: a high-temperature phase of TiNi has a cubic B2 structure which, in a sufficiently narrow temperature interval depending on composition and thermal treatment, experiences one to three phase transitions : B2-IS-B19', B2-IS-R, B2-IS, where B19'-B19 is accompanied with monoclinic distortion, R is the rhombohedral phase (the notations are given in [20]), IS is the intermediate incommensurate structure.…”

Section: Some Data On Phase Transitionsmentioning

confidence: 99%

Phase Transitions in the Intermetallic Compound TiNi with Charge‐Density Wave Formation

Shabalovskaya¹

1985

Physica Status Solidi (b)

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Section: Some Data On Phase Transitionsmentioning

confidence: 99%

Phase Transitions in the Intermetallic Compound TiNi with Charge‐Density Wave Formation

Shabalovskaya¹

1985

Physica Status Solidi (b)

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“…Comparison between virgin powder and as-built sample points out a TTs increase of about 20 °C, which is associated to Ni loss during manufacturing. By comparing TTs to those reported in previous works [8,21], it seems that about 1% of loss in Ni content occurred.…”

mentioning

confidence: 57%

Effect of Heat Treatments on Microstructure and Mechanical Properties of Nitinol Prototype Stents Produced by Laser Powder Bed Fusion

Abrami,

Tocci,

Tamilselvam

et al. 2023

KEM

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Laser Powder Bed Fusion (L-PBF) is turning out to be very promising for biomedical components production and stents are among the devices that would be suitable for tailor-made production. One of the most common stent types are the self-expandable, manufactured with Nitinol (NiTi). The use of NiTi alloy with L-PBF needs to be well controlled, as Ni evaporation during the process leads to significant variations in the final component properties. In the present work, prototype NiTi stents were produced via L-PBF and heat treated to examine the possibility of employing this technology for their application, also considering the Ni evaporation resulting from the layer-by-layer deposition. Samples were characterized through differential scanning calorimetry (DSC), microstructural observations, and compression tests in plate-to-plate configuration according to the standard. In parallel, a commercially available stent manufactured with traditional technology was tested for comparison.

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The Structure and Physical-Mechanical Properties of Multicomponent Porous TiNi (Mo, Fe, Cu) Alloys

et al. 2014

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The copper alloying effect on the special features and physical-mechanical properties of multicomponent porous TiNi-base alloys has been investigated. A partial replacement of Ni by 1−10 at.% Cu in a porous TiNibase alloy is shown to produce changes in the phase composition of the material and to give rise to dendritic regions. The behavior of each of the materials under study with addition of Cu as an alloying element depends on the size and distribution density of precipitate particles and dendrites. The change in the structural state of porous TiNi-base alloys with Cu additions due to Ti-and Ni-rich phase precipitation and formation of dendritic regions is found to bring about changes in the physical-mechanical properties of the materials over a wide temperature interval. Optimum copper concentrations were fixed to be in the range from 3 to 6 at.%. With these concentrations, the porous alloys of the above-indicated composition exhibited a wide working temperature interval (0−40°C) over which reversible deformation developed and martensite shear stresses were of very low magnitudes.

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Diagrams of structural transitions of alloys based on TiNi and shape memory effects

Cited by 5 publications

References 1 publication

Phase Transitions in the Intermetallic Compound TiNi with Charge‐Density Wave Formation

Phase Transitions in the Intermetallic Compound TiNi with Charge‐Density Wave Formation

Effect of Heat Treatments on Microstructure and Mechanical Properties of Nitinol Prototype Stents Produced by Laser Powder Bed Fusion

The Structure and Physical-Mechanical Properties of Multicomponent Porous TiNi (Mo, Fe, Cu) Alloys

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