Nanoparticle Dispersion Strengthened Copper Alloy and Preparation Method and Use Thereof

A method for preparing a nanoparticle dispersion strengthened copper alloy, comprising the steps of:

• S1:
• preparing Cu—Al2O3 dispersed copper powder from Cu—Al alloy powder by internal oxidation and reduction;
• and
• S2:
• mixing the Cu—Al2O3 dispersed copper powder prepared in step S1 with Cr powder to obtain a composite powder, and subjecting the composite powder to press forming, hot press sintering, sheath moulding, hot extrusion, solid solution treatment, cold deformation, and then aging treatment;
• wherein the hot press sintering is conducted at a temperature within an approximate range of 900° C. to 1070° C. and a pressure within an approximate range of 40 MPa to 80 MPa for a duration within an approximate range of 2 hours to 8 hours.