Moat, R. J. and Pinkerton, A. J. and Li, L. and Withers, P. J. and Preuss, M. (2009) Crystallographic texture and microstructure of pulsed diode laser-deposited Waspaloy. Acta Metallurgica et Materialia, 57 (4). pp. 1220-1229. ISSN 1359-6454Full text not available from this repository.
The role of both laser Pulse length and duty cycle in controlling the grain size and crystallographic texture of diode laser-deposited Waspaloy powder is investigated. Thin-walled test structures of Waspaloy have been produced Using a range of pulse parameters and analyzed by means of scanning electron microscopy and electron backscatter diffraction. Results have been correlated with a simple analytical model of the effect of the laser pulse oil the substrate temperature and melt-pool geometry in order to help explain the trends observed. Findings show that Pulse parameters have a marked effect oil the resulting grain morphology and crystallographic orientation. Modelling has indicated that this arises because the microstructure Lire is highly dependent oil the melt-pool geometry, particularly the inclination angle of the melt-pool boundary.
|Journal or Publication Title:||Acta Metallurgica et Materialia|
|Uncontrolled Keywords:||Laser direct metal deposition (LDMD) ; Nickel alloys ; Texture ; Near-net shape manufacture ; Electron backscatter diffraction|
|Subjects:||T Technology > TA Engineering (General). Civil engineering (General)|
|Departments:||Faculty of Science and Technology > Engineering|
|Deposited On:||26 Oct 2012 16:06|
|Last Modified:||26 Oct 2012 16:30|
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