Abstract
Structural conditions of the B2 phase of the Ti49.5Ni50.5 alloy surface layers before and after electron-beam treatments (pulse durationτ = 150 μs, number of pulses n = 5, beam energy density E≥ 20 J/cm2) were studied by X-ray diffraction analysis. Analysis of the X-ray patterns demonstrates that surface layers modified by electron beam treatment contain phase with B2surf structure. It is revealed that the lattice parameter of the B2surf phase in the surface (modified) layer is also higher than the lattice parameter of the B2surf phase in the underlying layer (αB2 = 3.0159 ± 0.0005). The values of lattice parameter of phase B2surf amounted αB2 surf = 3.0316 ± 0.0005 Å and αB2 surf = 3.0252 ± 0.0005 Å, for the specimens after electron-beam treatment at E1 = 15 J/cm2 and E2 = 20 J/cm2, respectively. Inflated lattice parameters α B2 surf surf are associated with changes in the chemical composition and the presence of residual stresses in the surface region of the samples after electron-beam treatments.
| Original language | English |
|---|---|
| Title of host publication | AIP Conference Proceedings |
| Publisher | American Institute of Physics Inc. |
| Pages | 407-410 |
| Number of pages | 4 |
| Volume | 1623 |
| ISBN (Print) | 9780735412606 |
| DOIs | |
| Publication status | Published - 2014 |
| Event | International Conference on Physical Mesomechanics of Multilevel Systems 2014 - Tomsk, Russian Federation Duration: 3 Sep 2014 → 5 Sep 2014 |
Other
| Other | International Conference on Physical Mesomechanics of Multilevel Systems 2014 |
|---|---|
| Country | Russian Federation |
| City | Tomsk |
| Period | 3.9.14 → 5.9.14 |
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Keywords
- B2 phase
- Electron-beam treatments
- NiTi
- Structural phase states
- X-ray diffraction analysis
ASJC Scopus subject areas
- Physics and Astronomy(all)
Cite this
Gradient changes in structural condition of the B2 phase of NiTi surface layers after electron-beam treatments. / Meisner, Ludmila L.; Gudimova, Ekaterina Yu; Ostapenko, Marina G.; Lotkov, Aleksandr I.
AIP Conference Proceedings. Vol. 1623 American Institute of Physics Inc., 2014. p. 407-410.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Gradient changes in structural condition of the B2 phase of NiTi surface layers after electron-beam treatments
AU - Meisner, Ludmila L.
AU - Gudimova, Ekaterina Yu
AU - Ostapenko, Marina G.
AU - Lotkov, Aleksandr I.
PY - 2014
Y1 - 2014
N2 - Structural conditions of the B2 phase of the Ti49.5Ni50.5 alloy surface layers before and after electron-beam treatments (pulse durationτ = 150 μs, number of pulses n = 5, beam energy density E≥ 20 J/cm2) were studied by X-ray diffraction analysis. Analysis of the X-ray patterns demonstrates that surface layers modified by electron beam treatment contain phase with B2surf structure. It is revealed that the lattice parameter of the B2surf phase in the surface (modified) layer is also higher than the lattice parameter of the B2surf phase in the underlying layer (αB2 = 3.0159 ± 0.0005). The values of lattice parameter of phase B2surf amounted αB2 surf = 3.0316 ± 0.0005 Å and αB2 surf = 3.0252 ± 0.0005 Å, for the specimens after electron-beam treatment at E1 = 15 J/cm2 and E2 = 20 J/cm2, respectively. Inflated lattice parameters α B2 surf surf are associated with changes in the chemical composition and the presence of residual stresses in the surface region of the samples after electron-beam treatments.
AB - Structural conditions of the B2 phase of the Ti49.5Ni50.5 alloy surface layers before and after electron-beam treatments (pulse durationτ = 150 μs, number of pulses n = 5, beam energy density E≥ 20 J/cm2) were studied by X-ray diffraction analysis. Analysis of the X-ray patterns demonstrates that surface layers modified by electron beam treatment contain phase with B2surf structure. It is revealed that the lattice parameter of the B2surf phase in the surface (modified) layer is also higher than the lattice parameter of the B2surf phase in the underlying layer (αB2 = 3.0159 ± 0.0005). The values of lattice parameter of phase B2surf amounted αB2 surf = 3.0316 ± 0.0005 Å and αB2 surf = 3.0252 ± 0.0005 Å, for the specimens after electron-beam treatment at E1 = 15 J/cm2 and E2 = 20 J/cm2, respectively. Inflated lattice parameters α B2 surf surf are associated with changes in the chemical composition and the presence of residual stresses in the surface region of the samples after electron-beam treatments.
KW - B2 phase
KW - Electron-beam treatments
KW - NiTi
KW - Structural phase states
KW - X-ray diffraction analysis
UR - http://www.scopus.com/inward/record.url?scp=84915819830&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84915819830&partnerID=8YFLogxK
U2 - 10.1063/1.4898968
DO - 10.1063/1.4898968
M3 - Conference contribution
SN - 9780735412606
VL - 1623
SP - 407
EP - 410
BT - AIP Conference Proceedings
PB - American Institute of Physics Inc.
ER -