the hardness and strength properties of wc-co composites

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ID: 240899
2011
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Abstract
The industrially-important WC-Co composite materials provide a useful, albeit complicated materials system for understanding the combined influences on hardness and strength properties of the constituent WC particle strengths, the particle sizes, their contiguities, and of Co binder hardness and mean free paths, and in total, the volume fraction of constituents. A connection is made here between the composite material properties, especially including the material fracture toughness, and the several materials-type considerations of: (1) related hardness stress-strain behaviors; (2) dislocation (viscoplastic) thermal activation characterizations; (3) Hall-Petch type reciprocal square root of particle or grain size dependencies; and (4) indentation and conventional fracture mechanics results. Related behaviors of MgO and Al2O3 crystal and polycrystal materials are also described for the purpose of making comparisons.
Reference Key
armstrong2011materialsthe Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Ronald W. Armstrong
Journal Nature Materials
Year 2011
DOI
10.3390/ma4071287
URL
http://www.mdpi.com/1996-1944/4/7/1287/
Keywords
toughness hardness dislocations mgo cracking al2o3 stress intensity electronics civil engineering (general)microscopydescriptive and experimental mechanics nuclear engineeringengineering (general)

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