Abstract
Production of intermetallic materials in the systems TiAl-X and TiAl3-X (X = Cr, Mn, Fe) has been achieved by means of mechanical milling and sintering techniques. The produced materials have grain sizes in the nano and microscale depending on the material and processing variables. The average grains size range between 30 and 280 nm. Sintered materials in the TiAl-X system are constituted by the γ and the α2 phases while the Al3Ti-X alloys are formed only by the cubic L12 phase. Compression tests are performed to evaluate their mechanical properties as a function of temperature and grains size. In all cases yield stresses higher that 1 GPa are obtained together with a ductility that depends upon temperature and grains size. No ductility is found for the smallest grains sizes tested (30 nm).
Original language | English |
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Pages (from-to) | 229-234 |
Number of pages | 6 |
Journal | Materials Science Forum |
Volume | 360-362 |
State | Published - 2001 |
Event | Metastable, Mechanically Alloyed and Nanocrystalline Materials (ISMANAM 2000) - Oxford, United Kingdom Duration: 9 Jul 2000 → 14 Jul 2000 |
Keywords
- Intermetallic materials
- Mechanical alloying
- Mechanical properties
- Nanocrystalline materials