FEATURES OF STRUCTURE AND PHASE FORMATION PROCESSES IN ACTIVATED TI-AL POWDER MIXTURES UNDER EXTREME THERMAL CONDITIONS
RWNPYV
DOI:
https://doi.org/10.25712/ASTU.2072-8921.2025.02.036Abstract
In this paper, the processes of structure formation in mechanoactivated powder mixtures of Ti + Al, Ti + 3Al compositions under shock wave conditions are studied. At the first stage of the study, powder mixtures were mechanically activated in an «Activator-2SL» ball mill. At the second stage, the obtained mechanocomposites were subjected to thermal effects in the modes of low-temperature sintering and thermal explosion. At the third stage, the obtained precursors were subjected to shock wave action. It is established that as a result of the implementation of the third stage, the structural state of the mixture significantly depends on the modes of thermal action on the initial mechanocomposites. At the same time, two limiting structural states can be distinguished in the obtained products – from complete amorphization to complete crystallization. The latter may be determined by the degree of stability of the crystal lattices as a result of mechanical activation and thermal effects. The results obtained may make it possible to control the structural and phase state of detonation-gas sputtering products, which may be important from the point of view of protective coating technologies.
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Copyright (c) 2025 Valery Yu. Filimonov, Marina V. Loginova, Alexey V. Sobachkin, Alexander A. Sitnikov, Vladimir I. Yakovlev 5, Andrey Yu. Myasnikov, Alexey Z. Negodyaev, Alexander A. Roznyj
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