▎ 摘　　要

NOVELTY - High performance bismuth aluminum alloy comprises 30-45 wt.% beryllium, 3-4.5 wt.% nickel, 3-4.5 wt.% magnesium, 0.1-1.5 wt.% silver, 0.1 -3.5 wt.% silicon, 0.05-0.2 wt.% strontium, 0.05-0.3 wt.% zirconium, 0.05-0.2 wt.% chromium, 0.05-0.3 wt.% scandium, 0.9-3.6 wt.% silicon carbide, 0.1-0.4 wt.% graphene, and balance is aluminum, and inevitable impurities. USE - High performance bismuth aluminum alloy. ADVANTAGE - The high performance bismuth aluminum alloy is effectively improves strength and corrosion resistance, sand it is applied in electronic encapsulation material. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing high performance bismuth aluminum alloy, which involves: (A) adding 35-50 wt.% beryllium, 3.5-5 wt.% nickel, 3.5-5 wt.% magnesium, 0.1-0.25 wt.% silver, 0.2-4.5 wt.% silicon, 0.1-0.25 wt.% strontium, 0.1-0.35 wt.% zirconium, 0.1-0.25 wt.% chromium, 0.1-0.35 wt.% scandium, and balance is aluminum, and inevitable impurities; (B) putting all the weighed metals into high-temperature melting furnace to melt them; (C) putting silicon carbide, graphene and aluminum powder into ball mill Performing ball milling; (D) adding ball milled powder to molten metal solution and stirring well, where mass ratio of the aluminum powder, silicon carbide and graphene is 65-70:8-9:1, and ratio of total weight of material and total weight of the silicon carbide, graphene and aluminum powder is 10-15:1, after stirring, slag, refining, metamorphism, carrying out degassing treatment in sequence, and finally casting ingot; (E) preheating ingot into a slab and then homogenizing at 340-400 degrees C, until first stage homogenization treatment is completed at a temperature for 12-36 hours; (F) performing second stage homogenization treatment at 400-450 degrees C for 6-24 hours; (G) performing multi-pass hot rolling deformation at 430-500 degrees C; and (H) subjecting obtained hot-rolled deformation ingot to hot isostatic pressing at 530-590 degrees C, 110-140 mega Pascal for 1-3 hours, and performing artificial aging treatment.