Structure and Properties of Cold-Worked and Annealed Ti-Ni-Co Shape Memory Wires Designed for Medical Application

Zdzisław Lekston; Danuta Stróż; Magdalena Jędrusik-Pawłowska

doi:10.4028/www.scientific.net/SSP.163.118

Paper Titles

Structure and Properties of the Melt-Spun Fe₄₁Ni₃₉P₁₀Si₅B₅ Alloy Heat Treated at Elevated Temperatures
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Characterization of β and Mg₄₁Nd₅ Equilibrium Phases in Elektron 21 Magnesium Alloy after Long-Term Annealing
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Microstructure Formation in Austenitic Steel after Compression with Oscillatory Torsion Test
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Structural Stability of Cu Processed by Severe Plastic Deformation Method
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Structure and Properties of Cold-Worked and Annealed Ti-Ni-Co Shape Memory Wires Designed for Medical Application
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Studies of Plastically Deformed Ni-Mn-Ga Ferromagnetic Shape Memory Alloy
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Structure of Low Temperature Nitrided/Oxidized Layer Formed on NiTi Shape Memory Alloy
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Structure of the Near Stoichiometric Thermally Treated Co₂NiGa Heusler Compounds
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Studies of NiTi Shape Memory Alloy after Severe Plastic Deformation
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Structure and Properties of Cold-Worked and Annealed Ti-Ni-Co Shape Memory Wires Designed for Medical Application

Abstract:

The effect of plastic deformation by drawing and rolling in the martensite state and final annealing on the structure, grain size, martensitic transformations and shape memory properties of TiNiCo wires is described in the paper. The wires were cold worked by 30 and 40% and then annealed at the temperature range 300-600oC. The structure, phase composition and transformation behaviour of samples after processing and annealing were studied using transmission electron microscopy (TEM), X-ray diffraction (XRD) method and differential scanning calorimetry (DSC) technique. The marformed and annealed at 400 and 450oC wires exhibited a very good superelastic behaviour. The obtained wires were used for production of the shape memory staples with the recovery temperatures close to the human body temperature and as well as for small superelastic staples for fixation of mandible bone fractures.

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Periodical:

Solid State Phenomena (Volume 163)

Pages:

118-122

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.163.118

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Online since:

June 2010

Authors:

Zdzisław Lekston, Danuta Stróż, Magdalena Jędrusik-Pawłowska

Keywords:

Marforming, NiTi-Based Shape Memory Alloys, Structure

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