Crack Deflection in Tungsten Carbide Based Laminates
Laminate materials were manufactured by alternating WC-6%Co layers with equal thickness layers of one of the following compositions: WC-16%Co, WC-16%Ni, Co, a W-Ni-Fe alloy, and Ni. One composition used WC-6%Ni in place of WC-6%Co, layered with the W-Ni-Fe alloy. Flexure specimens, consisting of nine alternating layers, were fabricated with either WC-6%Co or WC-6%Ni on the tensile surface of the specimen. The ability of these composites to deflect or arrest cracks was investigated in four point bending. Two of the compositions, WC-6%Co/W-Ni-Fe and WC-6%Co/Ni, exhibited the ability to fail non-catastrophically, showing inelastic work of fracture as high as 34,400 J/m2.
J. L. Watts and G. Hilmas, "Crack Deflection in Tungsten Carbide Based Laminates," International Journal of Refractory Metals and Hard Materials, Elsevier Inc., Jan 2006.
The definitive version is available at http://dx.doi.org/10.1016/j.ijrmhm.2005.04.005
Materials Science and Engineering
Keywords and Phrases
Crack Deflection; Fibrous Monolith; Laminate; Tungsten Carbide; Flexure
Article - Journal
© 2006 Elsevier Inc., All rights reserved.