ISSN 2687-0568

Stresses in Local Volumes During Reactive Sintering of Powder Mixture Ti-Al-Fe-Fe2O3

Authors
M.A. Anisimova 1 , A.G. Knyazeva 1

1 Institute of Strength Physics and Materials Science SB RAS, pr. Academicheskii, 2/4, Tomsk, Russia

Rev. Adv. Mater. Technol., 2024, vol. 6, no. 3, pp. 132–156
Abstract

Composites based on titanium and aluminium have been attracting attention for decades. One of the possible ways of creating such composites is based on reaction sintering, which implies sintering with accompanying chemical reactions, the consequence of which is a change in phase composition. The number of reactions may directly include those that lead to the formation of the hardening phase. Mixtures of the Ti-Al-Fe-Fe2O3 type, where the source of iron oxide is metalworking waste, are very promising for use in this direction. However, for multicomponent systems the regularities of phase formation, as well as the appearance of stresses in the diffusion zone, are not obvious and are not the same for the entire volume of reaction mixtures. The present paper describes general ideas and methods of modelling for reactive sintering and gives an overview of the situations that are most important for phase formation in a selected mixture. It is shown that the dynamics of phase growth and stresses can be different in different local volumes with various variants of particles meeting each other.

Keywords
Reactive diffusion; Phase growth; Stresses
Foundings

Russian Science Foundation and the Tomsk Region Administration: 22-13-20031

References
Volume 6, No 3
pages 132-156
History
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