Optimum Deoxidation of a Kh65NVFT Chromium–Nickel Alloy Containing Refractory Metals

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...

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Bibliographic Details
Published in:Russian metallurgy Metally 2020-12, Vol.2020 (12), p.1349-1354
Main Authors: Rumyantseva, S. B., Rumyantsev, B. A., Simonov, V. N., Sprygin, G. S., Kashirtsev, V. N.
Format: Article
Language:English
Subjects:
Chemistry and Materials Science
Manufacture of Ferrous and Nonferrous Metals
Materials Science
Metallic Materials
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Summary: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.
ISSN:0036-0295
1555-6255
DOI:10.1134/S0036029520120174