The Research of Method Receiving Dispersionstrengthened Copper with Nanosized Strengthened Faze, the Valuation of Material"s Mechanical Properties

Abstract

The article presents the results of research and development of a number of properties dispersionstrengthened materials based on copper, obtained by mechanical grinding, strengthened by nanosized inclusions of aluminum oxide. The maximum dispersion of the strengthening phase in copper matrix is achieved by choosing the original mixture CuO–Al₂O₃ with oxide particles less than 10 mcm, obtained by sedimentation. The main bulk of the aluminum oxide particles is from 5 to 100 nm. The optimal mode of milling, recovery annealings and sintering was identified to obtain copper with nanosized aluminum oxide. The mechanical properties of the developed materials which were investigated on the sintered samples, significantly higher than such, previously received on the dispersionstrengthened copper after thermomechanical treatment.