| Autor: |
Tsaregradskaya, T. L., Ovsiienko, I. V., Len, T. A., Saenko, G. V., Turkov, O. V. |
| Předmět: |
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| Zdroj: |
Molecular Crystals & Liquid Crystals; 2022, Vol. 749 Issue 1, p65-73, 9p |
| Abstrakt: |
For amorphous alloy Fe77,5Ni3,5Mo1Si2B16 the possibility of obtaining the amorphous-nanocrystalline state by controlled annealing of source alloy is evaluated. Based on theory of high-temperature stability of amorphous alloys the temperature interval in which the condition of growth of frozen-in crystallization centers is fulfilled, but the process of intensive crystallization has not yet begun, is calculated. With proposed method alloy in the amorphous-nanocrystalline state is obtained, that is confirmed by the results of X-ray diffraction and electron microscopic studies. Using the highly sensitive dilatometric technique, the onset temperatures of intense crystallization for the source amorphous alloy and for alloy in the amorphous-nanocrystalline state have been determined. It has been shown that the proposed heat treatment reduces the onset temperature of intense crystallization by 15°С. Calculated according to the dilatometric experiment, the part of the nanocrystalline phase in the obtained amorphous-nanocrystalline specimen does not exceed 24%. In the paper the micromechanical and electrical properties of obtained alloy in the amorphous-nanocrystalline state are investigated. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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