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.Full text not available from this repository.
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|
|Deposited On:||05 Nov 2012 09:45|
|Last Modified:||05 Nov 2012 09:45|
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