Fracture of WC-Co from a continuum viewpoint

✍ Scribed by Thomas W. Butler

• Publisher: Elsevier Science
• Year: 1972
• Tongue: English
• Weight: 861 KB
• Volume: 4
• Category: Article
• ISSN: 0013-7944
• DOI: 10.1016/0013-7944(72)90060-4

✦ Synopsis

The fracture of sintered tungsten carbide-cobalt is discussed and analyzed by applying continuum mechanics on the microscale. A plane model of rigid, hexagonal inclusions in an elastic-perfectly plastic matrix is taken to represent WC particles in a Co matrix. The continuum model employed here is used to extend earlier work by Drucker to include effects due to non-uniform particle sizes and variable interparticle spacings on the behavior of WC-Co in tension and bending. Effects on the bending strength due to change of the yield strength of the matrix are discussed. Also. the fracture strength of WC-Co in compression is predicted by using the continuum model along with published bending strength data and is found to be in reasonable agreement with published compressive strength data.