Laser embedding of TiC particles into the surface of phosphor bronze-bearing material

Yilbas, B S, Akhtar, S S, Karatas, C and Chatwin, Chris (2012) Laser embedding of TiC particles into the surface of phosphor bronze-bearing material. Surface and Interface Analysis, 44 (7). pp. 831-836. ISSN 0142-2421

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Abstract

A carbon film containing 5% TiC particles is formed on a pre-prepared bronze surface prior to laser treatment. The carbon film provides increased absorption of the incident laser beam and hosts TiC particles with a uniform distribution at the workpiece surface. Optical and scanning electron microscopy are used to examine the metallurgical and morphological changes in the laser treated layer. Micro-hardness of the laser-treated surface is measured, and the residual stress formed in the surface vicinity is measured using the X-ray diffraction technique. It was found that a dense layer with fine grains was formed in the laser-treated layer. The micro-hardness of the laser-treated surface increases almost three times compared with the base material hardness. The presence of a dense layer and the formation of Cu 3N in the surface region contribute to the hardness enhancement at the surface. Copyright © 2012 John Wiley & Sons, Ltd.

Item Type: Article
Keywords: bronze; laser; surface treatment; TiC
Schools and Departments: School of Engineering and Informatics > Engineering and Design
Subjects: Q Science > QC Physics > QC0251 Heat > QC0310.15 Thermodynamics
T Technology > TA Engineering (General). Civil engineering (General) > TA0174 Engineering design
T Technology > TS Manufactures > TS0200 Metal manufactures. Metalworking
Depositing User: Chris Chatwin
Date Deposited: 05 Jul 2012 13:55
Last Modified: 05 Jul 2012 13:55
URI: http://sro.sussex.ac.uk/id/eprint/39949
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