Aluminum alloy compound refining and reinforcing agent and preparing method and device thereof

Abstract

The invention belongs to the field of metal materials, and particularly discloses an aluminum alloy compound refining and strengthening agent and a preparing method and device thereof. Firstly, pure aluminum is placed into a smelting furnace crucible to be melted to a certain temperature, the top of an aluminum melt goes beyond an inlet of the upper portion of an electromagnetic circulating devicein the crucible, an aluminum alloy covering agent is added into the top of the crucible, weighing is conducted, preprocessed Ti, B2O3, Zr and C powder or dust is added into a feed port of the electromagnetic circulating device, then the electromagnetic circulating device is started, and the required compound refining and strengthening agent is obtained through a certain period of circulating reacting and compounding. The prepared compound refining and strengthening agent has the advantages of efficient refining of a traditional Al-Ti-B system and long-acting refining of an Al-Ti-C system. Moreover, the compound refining and strengthening agent contains a large amount of sub-micron and nanoscale TiB2, ZrB2, TiC and ZrC reinforcement particles, improves the refining effect and is finally dispersed in an alloy base body to have a dispersion strengthening effect.

Description

technical field [0001] The invention belongs to the field of metal materials, and particularly refers to an aluminum-titanium-zirconium-carbon-boron composite refinement and strengthening agent master alloy, a preparation method and a device for aluminum and aluminum alloys. Background technique [0002] With the increasing application of aluminum alloys in high-tech fields, aluminum alloys with fine and uniform equiaxed grains have broad market application prospects. In industrial production, adding a grain refiner to the melt is the most economical and practical method to refine the grain and improve the comprehensive mechanical properties of the alloy. As the most widely used refining agent, aluminum-titanium-boron intermediate alloy has the characteristics of long-term refining, which can effectively prevent the formation of coarse equiaxed crystals, columnar crystals and feathered crystals. At present, about 75% of the world's aluminum and aluminum alloys The aluminum-...

AI Technical Summary

Problems solved by technology

[0003] The present invention is aimed at producing a large amount of fluoride fumes in the preparation process of the existing aluminum-titanium-boron refiner, which causes great pollution to the environment, and the wettability of carbon in molten aluminum is poor during the preparation process of the aluminum-titanium-carbon refiner , the problem of difficult preparation; a green and long-acting aluminum alloy compound refiner and strengthener and its preparation device are proposed. The prepared aluminum-titanium-zirconium-carbon-boron compound refiner and strengthener master alloy can be used in effective While refining aluminum and aluminum alloys, a large number of micro-nano particles in the master alloy are dispersed in the alloy, which plays an effective role in dispersion strengthening

Images