The Features of Structure Formation in Mechanically Activated Powder Mixture 3Ti+Al in the Thermal Explosion Mode

Abstract:

The experimental investigation of structure formation processes in preliminary mechanically activated powder mixture 3Ti + Al was carried out. The synthesis was realized in the thermal explosion mode with the use of high-frequency induction heating. The characteristic features of structure and phase formation in this system by quenching of the mixture at different annealing times were installed. It was shown, that the processes of structure-phase formation occur in the following sequence: chemical reaction - structural relaxation - thermal relaxation - thermal equilibrium. The time-temperature intervals of Ti₃Al strictly single-phase compound existence with various concentrationsof non-equilibrium defects of the structure were established.

• Periodical: Applied Mechanics and Materials (Volume 621)
• Pages: 71-76
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.621.71
• Online since: August 2014
• Authors: Valeriy Filimonov, Alexander Sitnikov, Vladimir Yakovlev, Marina V. Loginova, A.V. Afanasyev, Alexey Z. Negodyaev
• Keywords: Induction Heating, Mechanical Activation, Nanopowder, Structure Formation, Synthesis, Thermal Explosion

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