Abstract
In this work, 7.5. vol.% TiB/Ti composite sheet was prepared by casting route then 1-D forging followed by multi-step rolling. Evolution of microstructural characteristic and tensile properties during preparation of TiB/Ti composite sheet was experimentally investigated. The results indicate that as-cast microstructure of TiB/Ti composite can be significantly modified by thermomechanical processing. The initially randomly distributed TiB whiskers within the as cast composite fracture and align during preparing TiB/Ti composite sheet. Reduction in aspect ratio of TiB and α lath width is observed as well. Evolution of tensile properties reveals that the limited strength and low elongation of as cast TiB/Ti composite increase significantly during preparing TiB/Ti composite sheet. The TiB/Ti composite sheet exhibits an excellent balance of strength and elongation to failure. Additionally, the brittle cleavage fracture mode of as-cast TiB/Ti composite changes to a combination of brittle and plastic fracture mode during the preparation of TiB/Ti composite sheet.
| Original language | English |
|---|---|
| Pages (from-to) | 505-510 |
| Number of pages | 6 |
| Journal | Materials and Design |
| Volume | 36 |
| DOIs | |
| State | Published - Apr 2012 |
Keywords
- A. Metal matrix composites
- E. Mechanical
- F. Microstructure
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