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Semin, Viktor O.
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структурно-фазовые состояния
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DOI Доступ к ресурсу на сайте издателя
10.1016/j.apsusc.2014.11.173
Title
Cross-sectional TEM analysis of structural phase states in TiNi alloy treated by a low-energy high-current pulsed electron beam
Creator
Neiman, Alexey A.
Creator
Lotkov, Aleksandr I.
Creator
Koval, Nikolay N.
Creator
Semin, Viktor O.
Creator
Teresov, A. D.
Creator
Meisner, Lyudmila L.
Subject
никелид титана
сплавы
электронные пучки
структурно-фазовые состояния
Date
2015
DOI
10.1016/j.apsusc.2014.11.173
Description
The paper reports on a study of structural phase states and their cross-sectional in-depth evolution from the surface of TiNi specimens treated by low-energy high-current electron beams with surface melting at a beam energy density E = 10 J/cm2, number of pulses N = 10, and pulse duration = 50 s. After treatment,the modified TiNi surface zone takes on a layered structure in which each layer differs in phase composition and structural phase state. Itis found thatthe melted layer is 8–10 m thick. This layer is in a single-B2 phase state with distorted structure, lattice parameters a = b = 3.003–3.033A, ˚ c = 3.033–3.063A˚ and ˛= 89.3–90◦, ˇ = = 90◦, quasihomogeneous chemical composition corresponding to Ti51.7Ni48.3, the preferred orientations ofthe crystallites in a direction close to 4 1 0B2, and inhomogeneous lattice strain. The intermediate layer contains, in addition to the B2 phase, a B19 martensite phase. The structural state of the B2 phase in this layer is close to equilibrium and its parameters approximate those of the initial B2 phase in nonirradiated TiNi specimens. ©
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Физический факультет
Identifier
vtls:000548589
http://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000548589
Type
статьи в журналах
Source
Applied surface science. 2015. Vol. 327. P. 321-326
Language
eng
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Физический факультет
Cross-sectional TEM analysis of structural phase states in TiNi alloy treated by a low-energy high-current pulsed electron beam
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