Tungsten carbide based cemented carbides, often simply termed hardmetals, are established forefront materials for tools, structural components, and wear parts with stringent requirements. Several of the technological applications in which they used include exposure to chemically aggressive media. Under these conditions, failure induced under applied load may be accelerated; consequently, servic...

The fracture of WC-Co cemented carbides with different WC particle sizes was investigated experimentally, and then a discrete element method (DEM) simulation performed considering such experiments. bending strength ultra-fine grained carbide size 0.4 μm extremely high. sample after test had numerous pieces the short length specimens without fracture. Initial structures consisting matrix defect ...

For rock drilling applications, the cemented carbides containing hard WC grains in a ductile Co binder are commonly used as drill buttons. In considering environmental and health aspects an alternate to Co-binder is pursued. present work, using standard scratch testing friction wear properties of WC-20 vol% Ni grade studied compared that grade. The deformation characteristics carbide grades eva...