Method for preparing Ti2AlNb alloy by using vacuum pressure infiltration method

• Main Authors: FAN GUOHUA, LI AIBIN, GENG LIN, CHEN RUI, TAN ZHENBIN
• Format: Patent
• Language: Chinese; English
• Published: 09.04.2014
• Subjects: ALLOYS; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; METALLURGY; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention discloses a method for preparing a Ti2AlNb alloy by using a vacuum pressure infiltration method and a method for preparing the Ti2AlNb alloy. The method disclosed by the invention is used for solving the problems of non-uniform distribution of elements such as Nb and Al and shrinkage cavity, pores and inclusion of the Ti2AlNb alloy in a conventional cast melting method for preparing the Ti2AlNb alloy are solved. The method comprises the following steps: 1, weighing 50.1-56.5 percent of pure Ti powder, 22.5-24.4 percent of Nb powder and 21.0-25.5 percent of Al-Y rare earth alloy block; 2, performing low-energy ball milling on pure titanium particles and niobium powder; 3, putting the rare earth aluminum alloy Al-Y block on the composite titanium and niobium powder, performing infiltration, so as to enable the melted Al-Y alloy to be fully penetrated into the composite titanium and niobium powder, reducing the pressure, performing heat preservation and pressure maintaining, and reacting and sinter