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 ...

Laser-Directed Energy Deposition (L-DED) is an additive manufacturing technique that has lately been employed to deposit coatings of cemented carbides, such as WC-Co. During deposition, complex microstructural phenomena usually occur, strongly affecting the and mechanical behavior coatings. Post-fabrication heat treatments (PFHTs) may be applied homogenize strengthen microstructure; nevertheles...

The main goal of this work is to obtain a reliable value the fracture toughness single grains tungsten carbide (WC). It attempted by testing microcantilever and micropillar samples shaped out, means focused ion beam milling, individual WC particles embedded within WC-Co cemented grade. Experimental included use nanoindenter for inducing bending splitting, as well sampling with basal prismatic o...