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

Shah, K. and Pinkerton, A. J. and Moat, R. and Li, L. and Preuss, M. (2008) Direct diode laser deposition of functionally graded Ti-6AL-4V and inconel 718 components. In: Proceedings of the 3rd Pacific International Conference on Applications of Lasers and Optics (PICALO). Laser Institute of America, pp. 273-278.

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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.

Item Type: Contribution in Book/Report/Proceedings
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Departments: Faculty of Science and Technology > Engineering
ID Code: 59697
Deposited By: ep_importer_pure
Deposited On: 05 Nov 2012 09:45
Refereed?: No
Published?: Published
Last Modified: 10 Apr 2018 02:25
Identification Number:

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