12,000

We have over 12,000 students, from over 100 countries, within one of the safest campuses in the UK

93%

93% of Lancaster students go into work or further study within six months of graduating

Home > Research > Publications & Outputs > Direct diode laser deposition of functionally g...
View graph of relations

« Back

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

Research output: Contribution in Book/Report/ProceedingsPaper

Published

Publication date2008
Host publicationProceedings of the 3rd Pacific International Conference on Applications of Lasers and Optics (PICALO)
PublisherLaser Institute of America
Pages273-278
Number of pages6
Original languageEnglish

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.