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Fracture toughness and fracture of WC-Co composites

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Abstract

Critical stress intensity factor, and related parameters have been measured in three-point bending for 18 different combinations of different volume fractions of cobalt (5 to 37%) and grain size of tungsten carbide (0.7, 1.1 and 2.2 μm). In particular, a study was made of the correlations between the strength and mechanical and microstructural parameters, such as ¯L Co,C WC, ¯L Co/¯D WC, ¯L 2Co /¯D WC,H V and wear resistance. A hypothesis for the mechanism of fracture has been proposed following an analysis of these results and a study of the mode of fracture.

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Authors and Affiliations

  1. Groupe de Cristallographie et Chimie du Solide, Laboratoire de Chimie Minérale Industrielle, L.A. 251 Université de Caen, 14032, Caen Cedex, France

    J. L. Chermant & F. Osterstock

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  1. J. L. Chermant
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  2. F. Osterstock
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Chermant, J.L., Osterstock, F. Fracture toughness and fracture of WC-Co composites. J Mater Sci 11, 1939–1951 (1976). https://doi.org/10.1007/BF00708272

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  • DOI: https://doi.org/10.1007/BF00708272

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