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77-30569/377117 Research of regularities of nitrogen behavior when producing mono-crystals of hot-resistant nickel alloy HA30-VI
Engineering Education # 04, April 2012
Nitrogen behavior under different thermo-time modes of the melting alloy HA30-VI in the induction furnace was investigated; optimal temperature of melted nitrogen depuration was determined. The negative influence of nitrogen on the formation of parasitic grains with random orientation near the surface of mono-crystal casting was shown. Non-uniform distribution of nitrogen with the height of cast mono-crystals was determined.
 
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