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Indentation-derived mechanical properties of Ti-6Al-4V: Laser-powder bed fusion versus electron beam melting.
- Source :
-
Materials Letters . Oct2021, Vol. 301, pN.PAG-N.PAG. 1p. - Publication Year :
- 2021
-
Abstract
- • Ti64 samples were fabricated through L-PBF and EBM techniques. • The microstructure of the samples was analyzed using EBSD technique. • The micromechanical properties of the samples were evaluated using nanoindentation. • The microstructure of L-PBF-Ti64 was one order of magnitude finer than EBM-Ti64. • The micromechanical strength of L-PBF-Ti64 was higher than EBM-Ti64. Employing a depth-sensing indentation testing technique, the room temperature mechanical properties of Ti-6Al-4V (Ti64) alloy fabricated through laser powder-bed fusion (L-PBF) and electron beam melting (EBM) additive manufacturing processes were studied. Mechanical properties including nano-hardness (in GPa), reduced elastic modulus, yield pressure, elastic recovery, and wear resistance were extracted. The microstructure of the fabricated materials was correlated with the indentation-derived characteristics. It was observed that the nano-hardness and reduced elastic modulus values were 3.66 ± 0.06 GPa and 118 ± 3 GPa, for the L-PBF, and 3.43 ± 0.22 GPa and 136 ± 4 GPa, for the EBM materials, respectively. The higher strength of the L-PBF alloy is due to the finer microstructure of this alloy. While α laths with an average width of 3.61 ± 0.92 μm developed in the EBM-Ti64, the microstructure of L-PBF-Ti64 consisted of α′ martensite with an average width of 0.37 ± 0.10 μm. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 0167577X
- Volume :
- 301
- Database :
- Academic Search Index
- Journal :
- Materials Letters
- Publication Type :
- Academic Journal
- Accession number :
- 151383525
- Full Text :
- https://doi.org/10.1016/j.matlet.2021.130273