Abrasive wear performance and microstructure of laser clad WC/Ni layers

Huang, S, Samandi, M and Brandt, M 2004, 'Abrasive wear performance and microstructure of laser clad WC/Ni layers', Wear, vol. 256, no. 1112, pp. 1095-1105.


Document type: Journal Article
Collection: Journal Articles

Title Abrasive wear performance and microstructure of laser clad WC/Ni layers
Author(s) Huang, S
Samandi, M
Brandt, M
Year 2004
Journal name Wear
Volume number 256
Issue number 1112
Start page 1095
End page 1105
Total pages 11
Publisher Elsevier BV
Abstract WC/Ni clad layers were produced on H13 tool steel substrates with a pulsed Nd:YAG laser and optical fibres using the injected powder technique. The effects of parameters, such as laser beam profile, WC powder shape and substrate pre-heat temperature on the clad layer microstructure and wear properties were investigated. The microhardness of the clad layers was measured using a Vickers microhardness tester. The microstructure of the clad layers was assessed by optical and scanning electron microscopy. The results show that up to 1mm thick, fully dense and crack-free of WC/Ni clad layers can be formed on H13 substrates. The results further show that the higher is the microhardness of the clad layers, the higher is its wear resistance. Average surface microhardness values of the clad layers were as high as 650HV. WC particle shape influences the microstructure and wear resistance of clad layer with crushed particles producing more wear resistant surfaces. The clad layers abrasive wear resistance was a factor of 510 times higher than that of unclad H13 tool steel.
Keyword(s) Laser cladding
Abrasive wear resistance
Pulsed Nd:YAG laser
Optical fibres
WC
DOI - identifier 10.1016/S0043-1648(03)00526-X
Copyright notice © 2003 Elsevier B.V. All rights reserved
ISSN 0043-1648
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