Abstract
A Ti67.79Fe28.36Sn3.85 (at.%) alloy has been prepared through arc-melting and solidification at a cooling rate of 40-10 K/s. The as-prepared microstructure exhibits a two-phase ultrafine eutectic consisting of FeTi (B2) and β-Ti (A2) phases. The mechanical properties (maximum strength, σmax = 1939 MPa; strain to fracture, εf = 13.5%) are considerably improved if compared with the model Ti70.5Fe29.5 eutectic alloy (σmax = 1733 MPa, εf = 3.4%). The improvement of plastic deformability is assessed in terms of a detailed investigation of the microstructure and fractographic studies. The presence of Sn is believed to boost the ease of slip transfer across the interface between the A2/B2 phases due a higher lattice mismatch between the structures.
Original language | English |
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Pages (from-to) | 737-740 |
Number of pages | 4 |
Journal | Materials Science and Engineering A |
Volume | 448-451 |
DOIs | |
Publication status | Published - 25 Mar 2007 |
Externally published | Yes |
Keywords
- Fracture
- Mechanical properties
- Ti-alloys
- Ultrafine eutectic