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77-30569/377160 Thermodynamic analysis of nitrogen phase state when producing hot-resistant casting alloy HA30-VI
Engineering Education # 04, April 2012
This article deals with the results of a thermodynamic analysis of nitrides phase state, their quantity in the alloy HA30-VI when the quantity of nitrogen varies in the initial furnace-charge at different melting stages. Thermodynamic calculations allow to estimate the phase composition of liquid melt and crystal nickel alloy HA30-VI. It was investigated whether titanium nitride, hafnium and carbides in equilibrium conditions were part of that alloy. Minimal permissible quantity of nitrogen required to eliminate the formation of nitrides was calculated.
 
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