METHOD FOR TWO-STAGE PRODUCTION OF TiMoNbZrAl Alloy Russian patent published in 2023 - IPC C22C14/00 C22C1/02 C22B9/20 

FIELD: metallurgy.

SUBSTANCE: invention relates to the production of ingots of titanium alloy TiMoNbZrAl, which comprises, wt.%: niobium 0.5, molybdenum 0.5, zirconium 3.0, aluminium 3.0, titanium the rest. At the first stage, samples of the original niobium, molybdenum, zirconium and aluminium are placed in a copper water-cooled tray of a vacuum electric arc furnace, whereas aluminium is placed on the bottom of the tray, niobium, molybdenum and zirconium are placed on it, zirconium, which is a getter, is placed in an additional hole, the furnace is evacuated to a residual pressure 10^-3 mm Hg and filled with high-purity argon, an arc between a non-consumable electrode and a zirconium getter is ignited to remove possible impurities, including oxygen, in the inert gas, then the raw materials are melted to obtain a single ingot. At the second stage, titanium is placed in the hole, the ingot obtained in the first stage is placed on it, the furnace is evacuated to a residual pressure of 10^-3 mm Hg and filled with high-purity argon, an arc between a non-consumable electrode and a zirconium getter is ignited to remove possible impurities in the inert gas, then the starting materials are remelted three times until a single ingot is obtained.

EFFECT: creating homogeneous ingots in two stages of smelting in electric arc furnaces with a non-consumable tungsten electrode.

1 cl, 2 dwg, 1 ex