Phase Equilibria in the Copper-Rich Corner of the Cu-Ni-Si-Cr System

Abstract:

Thermodynamic modeling of phase equilibria in the copper-rich corner of the Cu–Ni–Si–Cr system is performed. The "FactSage" software was used for thermodynamic modeling. Isothermal sections of the Cu–Ni–Si–Cr phase diagram with phase existence areas depending on the concentrations of nickel, silicon and chrome are plotted. Reactions between nickel, silicon and chrome, dissolved in a copper melt, are studied experimentally. The samples after crystallization are investigated using scanning electron microscope and X-ray phase analysis. The conditions of silicide formation in as-cast condition are defined. The research results can be used for technology analysis in copper and copper-based alloys production.

• Periodical: Materials Science Forum (Volume 870)
• Pages: 107-112
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.870.107
• Online since: September 2016
• Authors: Olga V. Samoilova*, Evgeny A. Trofimov
• Keywords: Chrome Silicides, Cu-Ni-Si-Cr System, Nickel Silicides, Phase Equilibria

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