Experiment and DEM Simulation on Bending Fracture of Ultra-fine Grained Cemented Carbide

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 (d) particles were used in DEM simulations. results for 2% d particle, which considered by comparison experimental results, as follows: highest load at fracture, most bond-breaking, shortest remaining specimen bond breaking sample. to be very useful understanding carbide’s behavior.