Abstract
The strength and failure of TiC based cermets (designed for metalforming) under monotonously increasing and cyclic loading conditions were investigated. Comparative trials with an ordinary WC hardmetal (widely used in metalforming) complemented with XRD studies were performed. It is shown that the failure of the carbide composite is preceded by local plastic strain taking place in its both phases in the ductile binder and in the brittle carbide phase. Under cyclic loading conditions the plasticity of carbide composites decreases. The intensity in decrease depends on alloy composition.
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