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This article is cited in 13 scientific papers (total in 13 papers)
CONDENSED MATTER
Self-propagating crystallization waves in the TiCu amorphous alloy
A. S. Rogacheva, S. G. Vadchenkoa, A. S. Shchukina, I. D. Kovaleva, A. S. Aroninb a Institute of Structural Macrokinetics and Materials Science, Russian Academy of Sciences, Chernogolovka, Moscow region, Russia
b Institute of Solid State Physics, Russian Academy of Sciences, Chernogolovka, Moscow region, Russia
Abstract:
Self-propagating crystallization waves are detected and experimentally demonstrated in the Ti$_{50}$Cu$_{50}$ amorphous alloy obtained by the melt spinning (ultrafast quenching) method. High-speed thermographic recording has shown that crystallization waves can appear spontaneously at the heating of an amorphous strip to 300–350$^\circ$C or at the local initiation by a hot tungsten coil of a small segment of the strip preliminarily heated to 230–250$^\circ$C. In the former case, the crystallization wave propagates at a velocity of $\sim$7 cm/s; in the latter case, the crystallization wave propagates in a self-oscillation mode at an average velocity of $\sim$1.2 cm/s. The temperature gradient across the wavefront is about 150$^\circ$C. The samples crystallized in the self-oscillation mode have a characteristic banded structure with a smaller grain in depression regions. The crystallization product in all samples is the TiCu tetragonal intermetallic phase.
Received: 24.08.2016 Revised: 05.10.2016
Citation:
A. S. Rogachev, S. G. Vadchenko, A. S. Shchukin, I. D. Kovalev, A. S. Aronin, “Self-propagating crystallization waves in the TiCu amorphous alloy”, Pis'ma v Zh. Èksper. Teoret. Fiz., 104:10 (2016), 740–744; JETP Letters, 104:10 (2016), 726–729
Linking options:
https://www.mathnet.ru/eng/jetpl5122 https://www.mathnet.ru/eng/jetpl/v104/i10/p740
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Abstract page: | 220 | Full-text PDF : | 37 | References: | 45 | First page: | 15 |
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