Abstract
The grain boundary network of WC in WC-Co is important, as cracks often travel intergranularly. This motivates the present work, where we experimentally measure the fracture energy of Σ2 twist grain boundaries between WC crystals using a double cantilever beam opened with a wedge under displacement control in a WC-10wt%Co sample. The fracture energy of this boundary type was compared with cleaving {10 1 ¯ 0 } prismatic planes in a WC single crystal. Fracture energies of 7.04 ± 0.36 Jm−2 and 3.57 ± 0.28 Jm−2 were measured for {10 1 ¯ 0 } plane and Σ2 twist boundaries, respectively.
| Original language | English |
|---|---|
| Pages (from-to) | 1589–1596 |
| Number of pages | 8 |
| Journal | JOM |
| Volume | 73 |
| Issue number | 6 |
| Early online date | 2021 |
| DOIs | |
| Publication status | Published - 2021 Jun 1 |
Subject classification (UKÄ)
- Materials Engineering
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