Ti-Sn intermediate alloy and preparation method thereof

The invention discloses a Ti-Sn intermediate alloy and a preparation method thereof, and relates to the technical field of titanium alloy production, the Ti-Sn intermediate alloy comprises a plurality of electrode blocks arranged in sequence, the plurality of electrode blocks are combined in a welding smelting mode, and the plurality of electrode blocks are respectively formed by mixing and pressing sponge titanium and metallic tin according to a gradient method. The preparation process comprises the steps that sponge titanium and metallic tin are mixed into multiple mixed materials according to a gradient method, the multiple mixed materials are pressed into electrode blocks, the multiple electrode blocks are arranged according to a gradient sequence and welded into an initial electrode, then the initial electrode is subjected to secondary smelting and then cooled in inert gas, and the Ti-Sn intermediate alloy is obtained. The Ti-Sn intermediate alloy prepared by the method has the characteristics of low cos