Abstract
The special features inherent in the formation of the structural-phase states on the surface of titanium nickelide samples subjected to multiple low-energy high-current variable energy density pulsed electron beam irradiation are investigated. The parameters of the electron beam operated in the fivefold surface melting regime are as follows: pulse duration τ = 150 μs, current I = 70 А, and energy densities Е<inf>1</inf>, Е<inf>2</inf>, and E<inf>3</inf> = 15, 20, and 30 J/сm<sup>2</sup>, respectively. The surface layer structure was examined by methods of the x-ray diffraction analysis and transmission electron microscopy. It is found that in the irradiated TiNi samples with Е ≤ 20 J/сm<sup>2</sup>, the layer containing a martensite phase lies at a certain depth below the surface rather than on the surface. In the irradiated TiNi sample with E<inf>3</inf> = 30 J/сm<sup>2</sup>, the subsurface region is in a two-phase state (B2 + B19′), with the В19′ phase being predominant. It appears that the lower is the energy density, the smaller is the amount of the martensite phase.
| Original language | English |
|---|---|
| Journal | Russian Physics Journal |
| DOIs | |
| Publication status | Accepted/In press - 17 Sep 2015 |
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Keywords
- B19′ martensite phase
- high-temperature B2 phase
- low-energy high-current electron beams
- residual stresses
- structural-phase states
- surface layers
- titanium nickelide
- x-ray diffraction analysis
ASJC Scopus subject areas
- Physics and Astronomy(all)
Cite this
The Special Features of the Phase Formation and Distribution in the Titanium Nickelide Surface Layers Treated by Electron Beams. / Meisner, L. L.; Ostapenko, M. G.; Lotkov, A. I.; Neyman, [No Value].
In: Russian Physics Journal, 17.09.2015.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - The Special Features of the Phase Formation and Distribution in the Titanium Nickelide Surface Layers Treated by Electron Beams
AU - Meisner, L. L.
AU - Ostapenko, M. G.
AU - Lotkov, A. I.
AU - Neyman, [No Value]
PY - 2015/9/17
Y1 - 2015/9/17
N2 - The special features inherent in the formation of the structural-phase states on the surface of titanium nickelide samples subjected to multiple low-energy high-current variable energy density pulsed electron beam irradiation are investigated. The parameters of the electron beam operated in the fivefold surface melting regime are as follows: pulse duration τ = 150 μs, current I = 70 А, and energy densities Е1, Е2, and E3 = 15, 20, and 30 J/сm2, respectively. The surface layer structure was examined by methods of the x-ray diffraction analysis and transmission electron microscopy. It is found that in the irradiated TiNi samples with Е ≤ 20 J/сm2, the layer containing a martensite phase lies at a certain depth below the surface rather than on the surface. In the irradiated TiNi sample with E3 = 30 J/сm2, the subsurface region is in a two-phase state (B2 + B19′), with the В19′ phase being predominant. It appears that the lower is the energy density, the smaller is the amount of the martensite phase.
AB - The special features inherent in the formation of the structural-phase states on the surface of titanium nickelide samples subjected to multiple low-energy high-current variable energy density pulsed electron beam irradiation are investigated. The parameters of the electron beam operated in the fivefold surface melting regime are as follows: pulse duration τ = 150 μs, current I = 70 А, and energy densities Е1, Е2, and E3 = 15, 20, and 30 J/сm2, respectively. The surface layer structure was examined by methods of the x-ray diffraction analysis and transmission electron microscopy. It is found that in the irradiated TiNi samples with Е ≤ 20 J/сm2, the layer containing a martensite phase lies at a certain depth below the surface rather than on the surface. In the irradiated TiNi sample with E3 = 30 J/сm2, the subsurface region is in a two-phase state (B2 + B19′), with the В19′ phase being predominant. It appears that the lower is the energy density, the smaller is the amount of the martensite phase.
KW - B19′ martensite phase
KW - high-temperature B2 phase
KW - low-energy high-current electron beams
KW - residual stresses
KW - structural-phase states
KW - surface layers
KW - titanium nickelide
KW - x-ray diffraction analysis
UR - http://www.scopus.com/inward/record.url?scp=84941670217&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84941670217&partnerID=8YFLogxK
U2 - 10.1007/s11182-015-0549-y
DO - 10.1007/s11182-015-0549-y
M3 - Article
JO - Russian Physics Journal
JF - Russian Physics Journal
SN - 1064-8887
ER -