Abstract
Various versions of deoxidation and optimization of melting a chromium–nickel Kh65NVFT alloy containing refractory metals under the conditions of AO Kompozit are analyzed. Thermodynamic calculations show that low oxygen concentrations in the Cr–32Ni–2W melts can be achieved by deoxidizing the metal with magnesium, hafnium, and zirconium in vacuum. It is experimentally confirmed that the deoxidation of such alloys makes it possible to achieve an oxygen concentration of 45 ± 5 ppm in the metal and to ensure the optimum morphology and concentration of oxide inclusions.
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