1 results about "Polycrystalline copper" patented technology

The application provides a wide-temperature-range super-elastic polycrystalline copper-aluminum-manganese alloy additive manufacturing method, which comprises the following steps: step 1, pretreating copper-aluminum-manganese raw materials; step 2, weighing the required mass of the pretreated copper-aluminum-manganese raw materials according to a fixed component proportion; step 3, electric arc smelting the copper-aluminum-manganese raw materials after component proportioning to obtain copper-aluminum-manganese alloy ingots; step 4, atomizing the copper-aluminum-manganese alloy ingots to obtain copper-aluminum-manganese alloy powder; step 5, 3D printing and in-situ secondary melting the copper-aluminum-manganese alloy powder, and wire cutting the copper-aluminum-manganese alloy sample after printing; and step 6, stress relief heat treatment of the copper-aluminum-manganese alloy sample to obtain a polycrystalline copper-aluminum-manganese alloy. The application can prepare a polycrystalline copper-aluminum-manganese alloy with excellent super-elasticity without solid solution treatment through component design and laser additive manufacturing method, and the alloy has controllable morphology, small grain size, uniform composition and favorable texture, and has large super-elastic strain and complete reverse phase transition.