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Coincident wire and powder deposition by laser to form compositionally graded material

Syed, Waheed Ul Haq and Pinkerton, Andrew J. and Liu, Zhu and Li, Lin (2007) Coincident wire and powder deposition by laser to form compositionally graded material. Surface and Coatings Technology, 201 (16-17). pp. 7083-7091. ISSN 0257-8972

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Abstract

In this paper a new surface coating technique is reported. The method combines powder and wire feed laser cladding to produce a functionally graded material in a single pass. The technique is demonstrated and material distributions in the clads are investigated using H13 tool steel as a substrate, copper powder and nickel wire as feedstock and a 1.5 kW diode laser as a power source. Electron probe microanalysis, scanning electron microscopy, energy dispersive X-ray spectroscopy, X-ray diffraction and optical microscopy were used to analyse deposited clads in terms of elemental composition, microstructure and flow characteristics in the deposition melt pool. It was found that by varying the feed rates of copper powder and nickel wire, the composition gradients within a layer and overall clad properties could be controlled, avoiding the need for multipass techniques. (C) 2007 Elsevier B.V. All rights reserved.

Item Type: Article
Journal or Publication Title: Surface and Coatings Technology
Additional Information: The final, definitive version of this article has been published in the Journal, Surface and Coatings Technology 201 (16-17), 2007, © ELSEVIER.
Uncontrolled Keywords: Laser deposition ; Single-step ; Functionally graded ; Wire/Powder
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Departments: Faculty of Science and Technology > Engineering
ID Code: 59563
Deposited By: ep_importer_pure
Deposited On: 04 Nov 2012 14:53
Refereed?: Yes
Published?: Published
Last Modified: 24 Jan 2014 05:34
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/59563

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