▎ 摘　　要

NOVELTY - High-conductivity heat-resistant rare earth aluminum alloy wire comprises 2-5 wt.% magnesium , 0.1-1 wt.% iron , 0.01-0.05 wt.% boron , 0.01-0.03 wt.% tellurium , 0.01-0.03 wt.% niobium , 0.05-0.20 wt.% rare earth element , 0.5-2 wt.% graphene, and balance aluminum and unavoidable impurities. USE - High-conductivity heat-resistant rare earth aluminum alloy wire. ADVANTAGE - The high-conductivity heat-resistant rare-earth aluminum alloy wire has compressive strength of more than 200 MPa, elongation of more than 2.5%, conductivity of more than 61%, Rockwell hardness of more than 68HRB, and strength retention rate of more than 94%. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing a highly conductive heat-resistant rare earth aluminum alloy wire, which includes (A) melting the aluminum ingot into molten aluminum, adding the dispersed graphene suspension to mix, and then introducing the molten aluminum into the holding furnace, heating to 680-750 degrees C, holding 1 3h, getting graphene composite aluminum liquid; (B) transferring the graphene composite aluminum liquid to the refining furnace, adding magnesium, iron, boron, tellurium, niobium, rare earth elements and aluminum according to the above ratio, stirring, heating up to 750-800 degrees C, and keeping the temperature for 30-60min, getting rare earth aluminum alloy mixed liquid; (C) spray refining agent and nitrogen into the refining furnace from the bottom of the refining furnace to refine the rare-earth aluminum alloy mixture, refining, adding a covering agent to cover the rare-earth aluminum alloy mixture and letting stand for 10-30 minutes; (D) injecting the refined rare earth aluminum alloy mixture into a continuous casting and rolling mill for casting and rolling to obtain a rare earth aluminum alloy rod; and (E) subjecting rare-earth aluminum alloy rod to spark plasma sintering under the protection of inert gas, and the rare-earth aluminum alloy rod is drawn after cooling to be drawn into a wire of the required size.