Structure and properties of amorphous-nanocrystalline alloy Fe77, 5Ni3, 5Mo1Si2B16, obtained by controlled annealing from the amorphous state. Issue 1 (12th December 2022)

• Record Type: Journal Article
• Authors: Tsaregradskaya, T. L.; Ovsiienko, I. V.; Len, T. A.; Saenko, G. V.; Turkov, O. V.
• Is Part Of: Molecular crystals and liquid crystals. Volume 749:Issue 1(2023)
• Page Start: 65
• Page End: 73
• Publication Date: 2022-12-12
• Subjects: Amorphous and nanostructured alloys -- nanocrystallization -- controlled annealing; Molecular crystals -- Periodicals; Liquid crystals -- Periodicals; Liquid crystals; Molecular crystals; Periodicals; 548
• DOI: 10.1080/15421406.2022.2068472
• Languages: English
• ISSNs: 1542-1406

Abstract

Abstract: For amorphous alloy Fe77, 5 Ni3, 5 Mo1 Si2 B16 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.