Evolution of surface structural state and properties of TiNi-based alloy after electron-beam treatment

doi:10.1007/s11015-025-01864-0

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DOI Доступ к ресурсу на сайте издателя			10.1007/s11015-025-01864-0

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Title: Evolution of surface structural state and properties of TiNi-based alloy after electron-beam treatment
Creator: Artyukhova, Nadezhda V.
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Anikeev, Sergey G.
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Kaftaranova, Maria I.
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Khodorenko, Valentina N.
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Bolshevich, Elena A.
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Pakholkina, Sofiya A.
Date: 2025
DOI: 10.1007/s11015-025-01864-0
Description: The study shows the effect of electron-beam treatment on the surface structural state and properties of a monolithic TiNi-based alloy. Initial monolithic TiNi alloy plates with a surface oxide layer were obtained by vacuum induction melting and subsequent rolling of ingots. Electron-beam treatment of the samples was carried out at an energy density of 3.5 and 4.5 J/cm2, and a pulse count was 15. The structural and phase composition of the plate surface before and after the electron-beam treatment were studied using X-ray diffraction analysis, optical and scanning microscopy, and interference profilometry. The wettability parameters were determined using a droplet shape analyzer based on the contact angle value. The roughness parameters were also assessed. It has been established that the exposure to electron-beam treatment changes the structure and phase composition by increasing its homogeneity. Increased electron energy during electron-beam treatment makes it possible to reduce the surface roughness parameters, leading to an increase in the contact angle of wetting. The characteristic temperatures of martensitic transformations remain practically unchanged.