Effect of Isothermal Quenching from the Liquid State on the Microstructure of Cu$_{47}$Ni$_{8}$Ti$_{34}$Zr$

Issues » Volume 37, Issue 5

Effect of Isothermal Quenching from the Liquid State on the Microstructure of Cu$_{47}$Ni$_{8}$Ti$_{34}$Zr$_{11}$

O. B. Lysenko, O. L. Kosynska, O. O. Lysenko, T. V. Kalinina

Dniprodzerzhinsk State Technical University, 2 Dniprobudivska Str., 51918 Dneprodzerzhinsk, Ukraine

Received: 07.04.2015. Download: PDF

By method of numerical solution of the heat-transfer and crystallization-kinetics equations, calculating analysis of the process-variables’ effect on the temperature conditions of solidification and microstructure of the Vit 101 alloy castings obtained by casting in a hot copper mould are made. For castings with thickness of 1 mm, the interval of the initial temperature values of mould is determined, which provides both the isothermal melt crystallization conditions at temperatures exceeding the glass transition point by 6—77 K and the obtaining of fully crystalline structure with grain sizes of $\cong$ 79—93 nm for acceptable practical realization time intervals of $\cong$ 0.5—5.0 h.

Key words: crystallization kinetics, microstructure of casting, thermal condition, Cu$_{47}$Ni$_{8}$Ti$_{34}$Zr$_{11}$ alloy, chill casting.

URL: http://mfint.imp.kiev.ua/en/abstract/v37/i05/0689.html

DOI: https://doi.org/10.15407/mfint.37.05.0689

PACS: 61.25.Mv, 61.43.Dq, 64.70.dg, 81.05.Kf, 81.07.Bc, 81.10.Fq, 81.30.Fb

Citation: O. B. Lysenko, O. L. Kosynska, O. O. Lysenko, and T. V. Kalinina, Effect of Isothermal Quenching from the Liquid State on the Microstructure of Cu$_{47}$Ni$_{8}$Ti$_{34}$Zr$_{11}$, Metallofiz. Noveishie Tekhnol., 37, No. 5: 689—702 (2015) (in Russian)

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