Direct laser deposition of functionally graded Ti-6Al-4V and Inconel 718 components

K Shah, Andrew Pinkerton, R Moat, Lin Li, Michael Preuss

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Laser direct metal deposition (LDMD) has developed from a prototyping to a single metal manufacturing tool. Its potential for creating multi-material and functionally graded structures is now beginning to be explored. In this work, three dimensional functionally graded structures of Ti-6Al-4V and Inconel 718 are fabricated by laser direct metal deposition (LDMD) on Inconel 718 substrate. The multi-track parts are built at a range of powder mass flow rates using a side nozzle and 1.5 kW Diode laser operating in both continuous and pulsed beam modes. Microstructure characterization and phase identification are performed by optical microscopy and X-ray diffraction. Only two samples are free of macro-scale cracks, one prepared with a continuous laser beam and one prepared with the beam in pulsed mode. XRD results show the presence of the brittle Ti2Ni phase in all samples.
Original languageEnglish
Title of host publication3rd Pacific International conference on applications of Lasers and Optics
PagesCD (504)
Publication statusPublished - Apr 2008
Event3rd Pacific International conference on applications of Lasers and Optics -
Duration: 1 Jan 1824 → …

Conference

Conference3rd Pacific International conference on applications of Lasers and Optics
Period1/01/24 → …

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