Ziel
- Investigation of the structure, the physical and mechanical properties of a ternary gamma-titanium aluminide (with iron addition), after various multi-step heat treatments;
- Characterisation of phase composition and morphology after each treatment;
- Detailed investigation of the pseudo-binary and ternary phases formed.
Expected Outcome
- Finding the specific features of an iron alloyed gamma-TiA1. Finding the influence of the ternary phases on alloy's properties;
- Establishing a methodology for the optimisation of the alloy's properties with regard to basic physico-chemical parameters of the components.
- Comprehensive characterisation of the ternary phase tau2 (D8a) : study of range of existence, changes in crystal structure and morphology due to variations in composition and thermomechanical history. The analysis of SE images and X-ray maps leads to the conclusion that tau2 is enriched in iron;
- Characterisation of a newly discovered superlattice named "X-phase". The plates containing the X-phase are interlaced with gamma, and have a characteristic non-uniform appearance. SAD pattern obtained from plates was indexed in terms of an orthorhombic unit cell. The result was confirmed by the transmission electron microscopy and X-ray diffraction analysis.
Programm/Programme
Thema/Themen
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CSC - Cost-sharing contractsKoordinator
60131 ANCONA
Italien