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Proceedings Paper

Laser Produced Composite Metal Cladding
Author(s): Ghazanfar Abbas; David R. F. West
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Paper Abstract

An investigation has been made aiming to produce a composite surface layer of high hardness consisting of Stellite alloy 6 and SiC particles by using a 2 kW CW CO2 laser. Using a pneumatic powder feeding system, a mixture of Stellite alloy 6 and SiC was blown into the melt pool produced by the laser on the mild steel (En 3b) substrate. A few tracks were also produced by blowing only Stellite powder, for comparative studies. The structure, chemical composition and hardness of the two sets of clads are discussed. Stellite blown clads were found to be low in dilution with a negligible amount of porosity; hardness levels in the range 540-580 Hv were obtained. The laser produced Stellite-SiC composites showed higher dilutions with a small amount of porosity; higher hardness levels (up to 1390 Hv) were obtained as compared with Stellite clads.

Paper Details

Date Published: 26 October 1989
PDF: 5 pages
Proc. SPIE 1132, High Power Lasers and Laser Machining Technology, (26 October 1989); doi: 10.1117/12.961585
Show Author Affiliations
Ghazanfar Abbas, Imperial College (UK)
David R. F. West, Imperial College (UK)


Published in SPIE Proceedings Vol. 1132:
High Power Lasers and Laser Machining Technology

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