Fatigue Properties of Nickel Titanium and their Improvement Using Low-Energy High-Current Electron Beams

It is shown that by irradiating nickel titanium surfaces with a low-energy high-current electron beam of a microsecond duration at the energy densities of E s = 1.5 and 3.7 J/cm 2 using n = 5 pulses it is possible to improve the fatigue characteristics of the material by nearly a factor of 1.5 due t...

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Veröffentlicht in:	Russian physics journal 2021-09, Vol.64 (5), p.850-858
Hauptverfasser:	Meisner, S. N., Meisner, L. L., Neiman, A. A., Panin, S. V., Vlasov, I. V.
Format:	Artikel
Sprache:	eng
Schlagworte:	Analysis Cleaning Compressive properties Condensed Matter Physics Electron beams Electrons Hadrons Heavy Ions High current Inclusions Lasers Materials fatigue Mathematical and Computational Physics Nickel Nickel base alloys Nickel compounds Nuclear Physics Optical Devices Optics Photonics Physical Sciences Physics Physics and Astronomy Physics, Multidisciplinary Residual stress Science & Technology Shape-memory alloys Small and medium sized companies Surface layers Theoretical Titanium carbide Titanium compounds
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Beschreibung
Zusammenfassung:	It is shown that by irradiating nickel titanium surfaces with a low-energy high-current electron beam of a microsecond duration at the energy densities of E s = 1.5 and 3.7 J/cm 2 using n = 5 pulses it is possible to improve the fatigue characteristics of the material by nearly a factor of 1.5 due to surface cleaning from the particles/inclusions of Ti 2 Ni, TiC(O) and due to the presence in the TiNi surface layer of compressive residual stresses oriented perpendicular to the irradiated surface.
ISSN:	1064-8887 1573-9228
DOI:	10.1007/s11182-021-02399-y