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The behaviour of water- and gas-atomised tool steel powders in coaxial laser freeform fabrication

Pinkerton, A. J. and Li, L. (2004) The behaviour of water- and gas-atomised tool steel powders in coaxial laser freeform fabrication. Thin Solid Films, 453-45 (2). pp. 600-605. ISSN 0040-6090

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Abstract

Recent work has shown that using a lower-cost water-atomised stainless steel powder for multiple layer laser deposition is functionally possible, and can produce parts with final properties equivalent to, or in some respects better than, gas-atormsed powder. Before the feasibility of using water-atomised powders in growing fields such as rapid tooling can be determined, it is essential that the behaviour of more appropriate materials be investigated. This paper reports work using a CO, laser and coaxial powder feed head to compare the characteristics of water- and gas-atomised H13 tool steel during the deposition process. The dimensions and geometries of the deposited tracks, and the final material microstructures are examined, and significant differences arising from the type of atomisation method are revealed. Possible explanations for the observed phenomena are discussed. (C) 2003 Elsevier B.V All rights reserved.

Item Type: Article
Journal or Publication Title: Thin Solid Films
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Departments: Faculty of Science and Technology > Engineering
ID Code: 59537
Deposited By: ep_importer_pure
Deposited On: 19 Nov 2012 12:08
Refereed?: Yes
Published?: Published
Last Modified: 10 Apr 2014 00:17
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/59537

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