Conditions of Amorphization of Metal Melts
O. B. Lysenko, I. V. Zagorulko, T. V. Kalinina, N. O. Kugai
Dniprovsk State Technical University, 2 Dniprobudivska Str., 51918 Kamianske, Ukraine
Received: 02.10.2017. Download: PDF
Algorithm is proposed for computational analysis of critical values of thickness and cooling rate for the layers of metal melts, which provide formation of both the conditionally amorphous structures, which are typical for metallic glasses, and the truly amorphous states without any inclusions of crystalline constituent. As shown, a real prospect of total suppression of crystallization during a quenching from the liquid state has only alloys with a high glass-forming ability. As concluded, the main factors, which increase the propensity of materials to formation of truly amorphous structures, are relatively low maximum values of the steady-state frequency of the crystal-nuclei formation and the tendency of moderating processes of nucleation at the increasing of melt-cooling rate that is revealed by calculations.
Key words: quenching of the melt, cooling rate, kinetics of crystallization, metallic glasses, true amorphous states.
URL: http://mfint.imp.kiev.ua/en/abstract/v40/i01/0001.html
DOI: https://doi.org/10.15407/mfint.40.01.0001
PACS: 61.20.Gy, 61.25.Mv, 61.43.Bn, 61.43.Dq, 64.70.dg, 81.05.Kf, 81.07.Bc
Citation: O. B. Lysenko, I. V. Zagorulko, T. V. Kalinina, and N. O. Kugai, Conditions of Amorphization of Metal Melts, Metallofiz. Noveishie Tekhnol., 40, No. 1: 1—21 (2018) (in Russian)