EFFECT OF COOLING RATE ON MICROSTRUCTURE OF Ti-6Al-4V ALLOY PRODUCED BY DIRECT METAL LASER SINTERING

EFFECT OF COOLING RATE ON MICROSTRUCTURE OF Ti-6Al-4V ALLOY PRODUCED BY DIRECT METAL LASER SINTERING

Santos, L.P.M.; Jardini, A.L.; Gonçalves, G.R.; Almeida, A.A.; Coelho, H.L.F.; da Silva, M. J.G.; Abreu, H.F.G.; Béreš, M.

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Direct metal laser sintering (DMLS) technique allows to build complex components directly from metal powder. In this work, Ti-6Al-4V samples with dimensions 10 × 10 × 10 mm3 were produced by DMLS technique. Parallel and cross laser beam scanning strategies were employed. The alloy was then treated at 1040 °C for 1 h followed by cooling in furnace and in liquid nitrogen. Samples were characterized by optical and scanning electron microscopy in addition to X-ray diffraction (XRD). The microstructure revealed columnar prior β-grains containing α + β phase, which was further confirmed by the XRD technique.

Direct metal laser sintering (DMLS) technique allows to build complex components directly from metal powder. In this work, Ti-6Al-4V samples with dimensions 10 × 10 × 10 mm3 were produced by DMLS technique. Parallel and cross laser beam scanning strategies were employed. The alloy was then treated at 1040 °C for 1 h followed by cooling in furnace and in liquid nitrogen. Samples were characterized by optical and scanning electron microscopy in addition to X-ray diffraction (XRD). The microstructure revealed columnar prior β-grains containing α + β phase, which was further confirmed by the XRD technique.

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DOI: 10.5151/phypro-sic100-062

Como citar:

Santos, L.P.M.; Jardini, A.L.; Gonçalves, G.R.; Almeida, A.A.; Coelho, H.L.F.; da Silva, M. J.G.; Abreu, H.F.G.; Béreš, M.; "EFFECT OF COOLING RATE ON MICROSTRUCTURE OF Ti-6Al-4V ALLOY PRODUCED BY DIRECT METAL LASER SINTERING", p-62-62. In: Proceedings of the International Symposium on Crystallography [Blucher Physics Proceedings, v.1, n.3]. São Paulo: Blucher, 2015.
ISSN 23582359, DOI 10.5151/phypro-sic100-062