Effect of WC content on microstructure and mechanical properties of Ni3Al-bonded cermets
Source abstract
Abstract
Abstract The effect of WC content on microstructure and mechanical properties of the TiC–Ni 3 Al system cermets was investigated. Ni 3 Al-bonded cermets showed a core–rim structure with carbide particle coupled with rim embedded in Ni 3 Al binder. With WC content increasing, TiC grains were refined and the white rim became complete and got thicker gradually. Interface between core and rim showed a completely coherent relationship. The rim enriched in W constituted an ideal coherence between hard phase and Ni 3 Al binder phase. With WC content increasing, the densification of cermets was enhanced, and hardness and TRS were increased firstly and then reduced, reaching peak values 90.9 HRA (HV 30 15 GPa) and 1629 MPa, respectively in cermet N5 (25 wt% WC). Similarly, fracture toughness got a peak value (11.6 MPa m 1/2 ), at the composition with 20 wt% WC.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced materials and composites · Advanced ceramic materials synthesis · Injection Molding Process and Properties
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