Abstract
In this study, a noncommercial 3D printing machine was used to fabricate Ti-6Al-4V alloy by electron-beam melting (EBM). The influence of beam current on the microstructure, phase composition and mechanical properties of electron-beam-melted Ti-6Al-4V alloy was investigated. Numerical simulation is implemented to evaluate thermal fields during electron-beam melting of Ti-6Al-4V powder. The decrease in beam current from 3.5 to 2.5 mA leads to refinement of microstructure: The average width of α plates decreases from 10 down to 6 μm. The formation of finer microstructure is attributed to higher cooling rate at lower beam current confirmed by simulation. The phase composition of EBM Ti-6Al-4V indirectly depends on the beam current. High content of β phase (7%) was achieved at the beam current of 3 mA. The produced Ti-6Al-4V samples are characterized by high microhardness (470-520 HV).
| Original language | English |
|---|---|
| Pages (from-to) | 6165-6173 |
| Number of pages | 9 |
| Journal | Journal of Materials Engineering and Performance |
| Volume | 28 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - 1 Oct 2019 |
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Keywords
- additive manufacturing
- electron-beam melting
- microhardness
- microstructure
- simulation models
- Ti-6Al-4V titanium alloy
ASJC Scopus subject areas
- Materials Science(all)
- Mechanics of Materials
- Mechanical Engineering
Cite this
Beam Current Effect on Microstructure and Properties of Electron-Beam-Melted Ti-6Al-4V Alloy. / Pushilina, N. S.; Klimenov, V. A.; Cherepanov, R. O.; Kashkarov, E. B.; Fedorov, V. V.; Syrtanov, M. S.; Lider, A. M.; Laptev, R. S.
In: Journal of Materials Engineering and Performance, Vol. 28, No. 10, 01.10.2019, p. 6165-6173.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Beam Current Effect on Microstructure and Properties of Electron-Beam-Melted Ti-6Al-4V Alloy
AU - Pushilina, N. S.
AU - Klimenov, V. A.
AU - Cherepanov, R. O.
AU - Kashkarov, E. B.
AU - Fedorov, V. V.
AU - Syrtanov, M. S.
AU - Lider, A. M.
AU - Laptev, R. S.
PY - 2019/10/1
Y1 - 2019/10/1
N2 - In this study, a noncommercial 3D printing machine was used to fabricate Ti-6Al-4V alloy by electron-beam melting (EBM). The influence of beam current on the microstructure, phase composition and mechanical properties of electron-beam-melted Ti-6Al-4V alloy was investigated. Numerical simulation is implemented to evaluate thermal fields during electron-beam melting of Ti-6Al-4V powder. The decrease in beam current from 3.5 to 2.5 mA leads to refinement of microstructure: The average width of α plates decreases from 10 down to 6 μm. The formation of finer microstructure is attributed to higher cooling rate at lower beam current confirmed by simulation. The phase composition of EBM Ti-6Al-4V indirectly depends on the beam current. High content of β phase (7%) was achieved at the beam current of 3 mA. The produced Ti-6Al-4V samples are characterized by high microhardness (470-520 HV).
AB - In this study, a noncommercial 3D printing machine was used to fabricate Ti-6Al-4V alloy by electron-beam melting (EBM). The influence of beam current on the microstructure, phase composition and mechanical properties of electron-beam-melted Ti-6Al-4V alloy was investigated. Numerical simulation is implemented to evaluate thermal fields during electron-beam melting of Ti-6Al-4V powder. The decrease in beam current from 3.5 to 2.5 mA leads to refinement of microstructure: The average width of α plates decreases from 10 down to 6 μm. The formation of finer microstructure is attributed to higher cooling rate at lower beam current confirmed by simulation. The phase composition of EBM Ti-6Al-4V indirectly depends on the beam current. High content of β phase (7%) was achieved at the beam current of 3 mA. The produced Ti-6Al-4V samples are characterized by high microhardness (470-520 HV).
KW - additive manufacturing
KW - electron-beam melting
KW - microhardness
KW - microstructure
KW - simulation models
KW - Ti-6Al-4V titanium alloy
UR - http://www.scopus.com/inward/record.url?scp=85074030004&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85074030004&partnerID=8YFLogxK
U2 - 10.1007/s11665-019-04344-0
DO - 10.1007/s11665-019-04344-0
M3 - Article
AN - SCOPUS:85074030004
VL - 28
SP - 6165
EP - 6173
JO - Journal of Materials Engineering and Performance
JF - Journal of Materials Engineering and Performance
SN - 1059-9495
IS - 10
ER -