Direct diode laser deposition of functionally graded ti-6AL-4V and inconel 718 components

Kamran Shah, Andrew Pinkerton, Richard Moat, Lin Li, Michael Preuss

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

2 Citations (Scopus)

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, PICALO 2008 - Conference Proceedings
PublisherLaser Institute of America
Pages273-278
Number of pages6
ISBN (Print)9780912035895
DOIs
Publication statusPublished - 2008
Externally publishedYes
EventPacific International Conference on Applications of Lasers and Optics 2008 - Beijing, China
Duration: 16 Apr 200818 Apr 2008
Conference number: 3rd

Conference

ConferencePacific International Conference on Applications of Lasers and Optics 2008
Abbreviated titlePICALO 2008
CountryChina
CityBeijing
Period16/04/0818/04/08

Keywords

  • Continuous wave
  • Direct metal deposition
  • Inconel 718
  • Laser
  • Pulsed wave
  • Ti-6Al-4V

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