| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 828544 | Materials & Design (1980-2015) | 2015 | 5 Pages |
•Ultrafine equiaxed grained composites were formed by spark plasma sintering.•The composites exhibit ultimate strength of 2585 MPa and plasticity of 34.2%.•The ultrahigh strength is due to dislocation pile-up induced by precipitated phase.•The large plasticity is ascribed to slip band propagation in the matrix.
Ultrafine grained Ti-based composites with equiaxed microstructure were fabricated by sintering and crystallizing from glassy powder precursors. The optimized composites exhibit ultimate strength of 2585 MPa and plasticity of exceeding 30%, occupying an unprecedented regime in the strength and ductility space of advanced titanium alloys. Dislocation pile-ups induced by precipitated phases and slip band propagation in the β-Ti matrix are the main reasons for the ultrahigh strength and plasticity respectively. The results provide an innovative route for fabricating titanium alloys with higher mechanical properties.
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