Preparation method of yttrium oxide dispersion strengthened copper alloy

Abstract

The invention discloses a preparation method of yttrium oxide dispersion strengthened copper alloy. The preparation method comprises the following steps that 1, Cu-Y alloy is prepared according to the weight percentage; 2, the weighed metal raw materials are mixed and smelted into alloy ingots; 3, the alloy ingots are crushed and then put into a quartz tube to prepare a Cu-Y amorphous material; 4, an alloy sample is melted; 5, the molten alloy sample is sprayed to a water-cooling copper roller, and an amorphous strip is obtained; 6, the prepared amorphous strip is put into a vacuum annealing furnace; 7, the amorphous strip and Cu (99.99%) are mixed and smelted; and 8, the finished yttrium oxide dispersion strengthened copper alloy is obtained. According to the preparation method, a Cu-Y2O3 combination with the specific gravity close to that of a matrix Cu is obtained through oxidation of a Cu-Y amorphous intermediate alloy, and on the basis of the Cu-Y2O3 combination, the ODS-Cu alloy with the uniform and controllable structure is prepared through direct smelting, meanwhile, the tedious powder preparation and powder treatment processes are omitted, the uniformity of alloy components is ensured by adopting a direct alloy casting method, and the practicability is high.

Description

technical field [0001] The invention relates to the technical field of strengthening copper alloys, in particular to a preparation method of diyttrium trioxide dispersion strengthening copper alloys. Background technique [0002] Dispersion strengthening refers to a means of strengthening a material by adding hard particles to a homogeneous material. It refers to a metal material reinforced with an ultrafine second phase (strengthening phase) that is insoluble in the matrix metal. In order to make the second phase evenly distributed in the base metal, it is usually produced by powder metallurgy. The second phase is generally an oxide or carbide or nitride with a high melting point, and its strengthening effect can be maintained at a higher temperature. If the compound is distributed in a dispersed particle or granular form in the solid solution grains, it can not only significantly increase the strength and hardness of the alloy, but also reduce the plasticity and toughnes...

AI Technical Summary

Problems solved by technology

[0004] The process of preparing ODS-Cu alloy by traditional oxidation method is mature, but it has the disadvantages of complex process, long cycle, many influencing factors, and difficult to accurately control product quality.

On the other hand, due to the low room temperature strength and insufficient room temperature plasticity of Cu-Al2O3 type ODS-Cu, it is difficult to realize large-scale production and meet the increasingly stringent service performance requirements.