Preparation methods of intermediate alloys of Al-Ti-B-N and Zn-Al-Ti-B-N and intermediate alloys obtained therethrough

The invention discloses a preparation method of an intermediate alloy of Al-Ti-B-N. The preparation method comprises the following steps: 1, weighing 0.01-0.12% by mass of pure Ti, 0.005-6% by mass of BN powder, and the balance pure aluminum ingot according to a mass ratio; 2, mixing the pure Ti with the BN powder, and dividing the obtained mixture into several parts; 3, melting the aluminum ingot to 900-1200DEG C, and pressing the mixture of the pure Ti and the BN powder into the molten aluminum in batches; 4, reacting for 1-10min after all the pure Ti and the BN powder are pressed into the molten aluminum; and 5, cooling the obtained molten alloy to 850-1100DEG C, casting the molten alloy into a mold, and solidifying to obtain the intermediate alloy of Al-Ti-B-N. The invention also discloses a preparation of an intermediate alloy of Zn-Al-Ti-B-N and the intermediate alloy obtained therethrough. The preparation methods can be realized by using a common smelting technology, complex technological measures of p