Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/19437
Title: Microstructure evolution of laser clad layers of W-C-Co alloy powders
Authors: Yang, Y
Man, HC 
Keywords: Laser cladding
Microstructure evolution
W-C-Co alloy powders
Issue Date: 2000
Publisher: Elsevier
Source: Surface and coatings technology, 2000, v. 132, no. 2-3, p. 130-136 How to cite?
Journal: Surface and coatings technology 
Abstract: Clad layers using high power carbon dioxide laser and various powder compositions of W, C, Co and WC on carbon steel substrate have been investigated. Microstructures of the clad layers are greatly affected by the processing parameters: powder size; powder type; shielding gas; degree of dilution; and geometry of the clad layer. Clad layers with large WC particles in a eutectic matrix and a high hardness, or with a mostly eutectic structure and low hardness, can be made for applications of cutting tools or wear resistant surfaces, respectively. Microstructure such as: (1) WC, Co3W3C, and a binary eutectic mixture of Co3W3C and α-(Fe,Co); (2) Co3W3C and a binary eutectic mixture of Co3W3C and α'-(Fe,Co); (3) a binary eutectic mixture of Co3W3C and α'-(Fe,Co) have been produced in the clad layer.
URI: http://hdl.handle.net/10397/19437
ISSN: 0257-8972
EISSN: 1879-3347
DOI: 10.1016/S0257-8972(00)00909-9
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