| abstract |
The present invention is a preparation method of high damping CuAlMn shape memory alloy. The method includes the following steps: in the first step, the Cu 51 Zr 14 inoculant particles are mixed and ball-milled with multi-layer graphene to obtain a composite powder; the second step, the composite powder is cold-pressed to obtain a prefabricated block; the third step When the CuAlMn shape memory alloy is smelted, a prefabricated block of Cu 51 Zr 14 inoculant and multi-layer graphene is added, and after the CuAlMn shape memory alloy is solidified, the temperature is reheated to 850-900 ° C, and quenched in water at room temperature after heat preservation, A high damping CuAlMn shape memory alloy was prepared. The invention overcomes the limited improvement of the damping performance only by refining the crystal grains in the prior art, and when the damping is improved by increasing the number of interfaces by the precipitation of the second phase, the size and number of the second phase are difficult to control, which makes the CuAlMn shape memory alloy. The damping performance is significantly improved. |