The manufacturing method null aluminum of the vanadium content mother alloy for titanium alloy

摘要

PROBLEM TO BE SOLVED: To continuously draw out a low oxygen base alloy as an ingot without developing the crack by using an electronic beam to melt a vanadium-containing alloy in a specific vacuum degree and deoxidizing. ;SOLUTION: As the vanadium-containing alloy used as the raw material, an alloy composed of aluminum and vanadium, is suitable. Further, the vanadium content in the alloy is desirable to be ≥75 wt.%. The vanadium-containing base alloy is melted under high vanadium of 10^-3-10^-6Torr by using the electronic beam and the deoxidizing treatment is executed. As the deoxidizing treatment, the well-known electronic beam melting method, etc., is mentioned. By this method, the oxygen content is reduced in the refined vanadium- containing base alloy and as the other result, iron content as impurity can be reduced. Then, at the time of drawing out as the ingot, this ingot can continuously be drawn out without developing the crack caused by heat strain.;COPYRIGHT: (C)1998,JPO