▎ 摘　　要

NOVELTY - Method for preparing a high-damping copper-aluminum-manganese shape memory alloy, involves (a) crushing a copper zirconium compound inoculant ingot, mixing the inoculant particles with multi-layer graphene, adding into a ball mill tank, using a ball mill, using absolute ethanol as the wet milling medium, and ball milling to obtain the composite powder, (b) drying the composite powder in a vacuum drying oven and performing cold press using a hydraulic press to obtain a prefabricated block of the compound inoculant and multilayer graphene, and (c) placing pure copper in a graphite crucible of an intermediate frequency induction heating furnace, sequentially adding electrolytic manganese and pure aluminum, melting, removing the scum, and moving to a resistance furnace, using a bell jar to press into a copper foil wrapped 1.1-1.25 %mass prefabricated block of inoculant and multilayer graphene, stirring, pouring into a mold, solidifying, heating and quenching in water. USE - The method is useful for preparing a high-damping copper-aluminum-manganese shape memory alloy. ADVANTAGE - The memory alloy has improved damping performance, and increases number of interfaces through precipitation of second phase to increase damping, size and number of second phase are difficult to control. DETAILED DESCRIPTION - Method for preparing a high-damping copper-aluminum-manganese shape memory alloy, involves (a) mechanically crushing a copper zirconium compound of formula: Cu51Zr14 inoculant ingot into particles below 200 mu m, mixing the inoculant particles with multi-layer graphene in a mass ratio of 10:1-10:2.5, adding into a ball mill tank, using a ball mill, using absolute ethanol as the wet milling medium, and ball milling at a speed of 200-400 rpm for 5-15 hours to obtain the composite powder, (b) drying the composite powder in a vacuum drying oven for 6-10 hours, taking out, performing cold press using a hydraulic press, and forming with a pressing pressure of 100-300 MPa for 3-7 minutes to obtain a prefabricated block of the compound inoculant and multilayer graphene, and (c) weighing 11.9 %mass aluminum, 2.5 %mass manganese and the remainder of copper, according to the shape memory alloy, placing pure copper in a graphite crucible of an intermediate frequency induction heating furnace, increasing the temperature for melting copper, sequentially adding electrolytic manganese and pure aluminum, melting for 2-5 minutes, removing the scum, and moving to a resistance furnace with a temperature of 1090-1110 degrees C for 5-15 minutes, using a bell jar to press into a copper foil wrapped 1.1-1.25 %mass prefabricated block of inoculant and multilayer graphene, stirring for 20-40 seconds, pouring into a mold, waiting for the shape memory alloy to solidified, placing in a resistance furnace, heating at 850-900 degrees C for 10-12 minutes and quenching in water at room temperature to obtain the product.