Direct LMD (laser metal deposition) was used to fabricate thin-wall Ti-6Al-4V using the powder mixture of Ti-6 wt.%Al-4 wt.%V. SEM (scanning electron microscopy), OM (optical microscopy) and EDS (energy dispersive spectroscopy) were employed to examine the chemical composition and microstructure of the as-deposited sections. Vickers hardness tests were then applied to characterize the mechanical properties of the deposit samples which were fabricated using pre-mixed elemental powders. The EDS line scans indicated that the chemical composition of the samples was homogenous across the deposit. After significant analysis, some differences were observed among two sets of deposit samples which varied in the particle size of the mixing Ti-6wt.%Al-4wt.%V powder. It could be found that the set with similar particle number for Ti, Al and V powder made composition much more stable and could easily get industry qualified Ti-6Al-4V components.
X. Chen et al., "Effect of Powder Particle Size on the Fabrication of Ti-6Al-4V using Laser Metal Deposition from Elemental Powder Mixture," Journal of Mechanics Engineering and Automation, vol. 6, pp. 348-355, David Publishing, Jan 2016.
Mechanical and Aerospace Engineering
Materials Science and Engineering
Keywords and Phrases
Laser metal deposition; Ti-6Al-4V; elemental powder; EDS; composition distribution; Vickers hardness
International Standard Serial Number (ISSN)
Article - Journal
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