Abstract
Abstract: The structure of the titanium alloy Ti–6Al–4V manufactured by electron-beam melting is shown to be represented by initial β-phase grains more than 40 μm in size; the internal volume of the grains is filled with α-phase precipitates in the form of plates. The average size of the α plates is 1.6, 2, and 5 μm at beam currents of 2, 2.5, and 3 mA, respectively. In situ X-ray diffractometry using synchrotron radiation shows that the phase transitions in the titanium alloy are divided into three main stages during hydrogenation to a concentration of 0.6 wt % at a temperature of 650°C and a pressure of 1 atm. An increase in the beam current from 2 to 3 mA does not significantly affect the phase composition of the alloy. During hydrogenation, the growth rate of the volume concentration of the β phase is lower at a higher beam current. This indicates a decrease in the rate of hydrogen absorption with increasing beam current, which is associated with an increase in the size of α plates.
| Original language | English |
|---|---|
| Pages (from-to) | 429-433 |
| Number of pages | 5 |
| Journal | Journal of Surface Investigation |
| Volume | 13 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 1 May 2019 |
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Keywords
- current beam
- electron-beam melting
- hydrogenation
- phase transitions
- structure
- synchrotron radiation
- titanium alloy Ti–6Al–4V
ASJC Scopus subject areas
- Surfaces, Coatings and Films
Cite this
Effect of the Beam Current during the Electron-Beam Melting of Titanium Alloy Ti–6Al–4V on the Structural Features and Phase Transitions in Gas-Phase Hydrogenation. / Pushilina, N. S.; Kudiiarov, V. N.; Syrtanov, M. S.; Kashkarov, E. B.
In: Journal of Surface Investigation, Vol. 13, No. 3, 01.05.2019, p. 429-433.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Effect of the Beam Current during the Electron-Beam Melting of Titanium Alloy Ti–6Al–4V on the Structural Features and Phase Transitions in Gas-Phase Hydrogenation
AU - Pushilina, N. S.
AU - Kudiiarov, V. N.
AU - Syrtanov, M. S.
AU - Kashkarov, E. B.
PY - 2019/5/1
Y1 - 2019/5/1
N2 - Abstract: The structure of the titanium alloy Ti–6Al–4V manufactured by electron-beam melting is shown to be represented by initial β-phase grains more than 40 μm in size; the internal volume of the grains is filled with α-phase precipitates in the form of plates. The average size of the α plates is 1.6, 2, and 5 μm at beam currents of 2, 2.5, and 3 mA, respectively. In situ X-ray diffractometry using synchrotron radiation shows that the phase transitions in the titanium alloy are divided into three main stages during hydrogenation to a concentration of 0.6 wt % at a temperature of 650°C and a pressure of 1 atm. An increase in the beam current from 2 to 3 mA does not significantly affect the phase composition of the alloy. During hydrogenation, the growth rate of the volume concentration of the β phase is lower at a higher beam current. This indicates a decrease in the rate of hydrogen absorption with increasing beam current, which is associated with an increase in the size of α plates.
AB - Abstract: The structure of the titanium alloy Ti–6Al–4V manufactured by electron-beam melting is shown to be represented by initial β-phase grains more than 40 μm in size; the internal volume of the grains is filled with α-phase precipitates in the form of plates. The average size of the α plates is 1.6, 2, and 5 μm at beam currents of 2, 2.5, and 3 mA, respectively. In situ X-ray diffractometry using synchrotron radiation shows that the phase transitions in the titanium alloy are divided into three main stages during hydrogenation to a concentration of 0.6 wt % at a temperature of 650°C and a pressure of 1 atm. An increase in the beam current from 2 to 3 mA does not significantly affect the phase composition of the alloy. During hydrogenation, the growth rate of the volume concentration of the β phase is lower at a higher beam current. This indicates a decrease in the rate of hydrogen absorption with increasing beam current, which is associated with an increase in the size of α plates.
KW - current beam
KW - electron-beam melting
KW - hydrogenation
KW - phase transitions
KW - structure
KW - synchrotron radiation
KW - titanium alloy Ti–6Al–4V
UR - http://www.scopus.com/inward/record.url?scp=85067933547&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85067933547&partnerID=8YFLogxK
U2 - 10.1134/S1027451019030170
DO - 10.1134/S1027451019030170
M3 - Article
AN - SCOPUS:85067933547
VL - 13
SP - 429
EP - 433
JO - Journal of Surface Investigation
JF - Journal of Surface Investigation
SN - 1027-4510
IS - 3
ER -