Weak-texture TA18 titanium alloy bar and preparation method thereof

The invention belongs to the field of titanium alloy machining, and discloses a weak-texture TA18 titanium alloy bar and a preparation method thereof.The preparation method comprises the steps that a TA18 titanium alloy consumable electrode is prepared; the consumable electrode is subjected to vacuum consumable smelting twice, and a cast ingot is obtained; and the cast ingot is forged for three times through diagonal drawing and reversing upsetting and drawing, and the weak-texture TA18 titanium alloy bar is obtained. According to the method, the TA18 titanium alloy bar is prepared by optimizing the smelting and forging processes of TA18 titanium alloy and adopting diagonal drawing and reversing upsetting and drawing, the structures of all parts of the prepared bar are uniform and are equiaxed structures, the prepared bar does not have obviously elongated structures, the orientation distribution is scattered and random, the bar structure is weaker, the control of the seamless tube structure in the later cold