NDLI: Phase and Structural States Formed in Titanium Nickelide Subsurface Layers Exposed to High-Current Pulsed Electron Beams

Content Provider	Springer Nature Link
Author	Neyman, А. А. Meisner, L. L. Lotkov, A. I. Semin, V. О.
Copyright Year	2015
Abstract	The behavior of the non-equilibrium states formed in the subsurface layers of a titanium nickelide-based alloy exposed to electron beams operated in the pulsed surface layer melting mode is investigated experimentally. Using methods of an x-ray diffraction analysis, and optical, scanning, and transmission electron microscopies, an 8–10 μm thick surface layer is shown to exhibit В2 phase-based structure undergoing inhomogeneous lattice microstrain. The core layer located at a depth of 10–20 μm below the irradiated surface contains a small amount (up to 5 vol.%) of a phase with В19′ martensite structure along with a slightly distorted lattice and unmelted Ti$_{2}$Ni phase particles. Electron beam treatment brings about changes in the chemical composition of the surface-modified layer which becomes enriched in titanium owing to the dissolution of the Ti$_{2}$Ni phase particles therein. Transmission electron microscopy has not revealed martensite phases in the modified layer. The electron beam exposure of the titanium nickelide surface is assumed to give rise to nonequilibrium highly distorted bcc structure.
Starting Page	255
Ending Page	265
Page Count	11
File Format	PDF
ISSN	10648887
Journal	Russian Physics Journal
Volume Number	58
Issue Number	2
e-ISSN	15739228
Language	English
Publisher	Springer US
Publisher Date	2015-06-06
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	titanium nickelide low-energy high-current pulsed electron beams atomic crystal structure microstrain Physics Optics, Optoelectronics, Plasmonics and Optical Devices Condensed Matter Physics Nuclear Physics, Heavy Ions, Hadrons Theoretical, Mathematical and Computational Physics
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy

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