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Metallurgist

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02-05-2023

Technology for the Production of High-Melting-Point Metal Master Alloys and their Testing in the Melting of Foundry Heat-Resistant Nickel Alloys

Authors: P. G. Min, V. E. Vadeev, N. S. Pitelin

Published in: Metallurgist | Issue 11-12/2023

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Abstract

This paper presents the technology of producing, in vacuum arc furnaces, master alloys based on nickel and rare refractory metals (rhenium, ruthenium, and hafnium) of ReNi-1, RuNi-2, and HfNi10 grades. The technology involves the use of metal powders as initial components, which are pre-compressed into tablets and degassed in a vacuum electric resistance furnace. Though this process, an ultra-low content of gas impurities in the master alloys is provided, which increased their manufacturability when introduced into the melt and contributed to the quality improvement of the smelted cast heat-resistant nickel alloys. Alloys ZhS32, VZhM4, and VKNA-1VR, melted using the developed master alloys, have high chemical composition stability, low levels of harmful impurities and gases, and consistently high levels of mechanical properties, which comply with the requirements of technical specifications and alloy certificates.

previous article Characteristics of the Formation of Structure and Properties of Dispersed-Hardened Charges at the Hot Stamping of Complex Shape Products

next article Effect of Chemical Composition on the Corrosion Resistance, Microstructure, Hardness and Electrical Conductivity of the Ge–In–Sn Alloys

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Title: Technology for the Production of High-Melting-Point Metal Master Alloys and their Testing in the Melting of Foundry Heat-Resistant Nickel Alloys
Authors: P. G. Min
V. E. Vadeev
N. S. Pitelin
Publication date: 02-05-2023
Publisher: Springer US
Published in: Metallurgist / Issue 11-12/2023
Print ISSN: 0026-0894
Electronic ISSN: 1573-8892
DOI: https://doi.org/10.1007/s11015-023-01459-7

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