Carbonyl compound M(CO)6 modified high-performance aluminum alloy material and preparation method thereof

Abstract

The invention discloses a carbonyl compound M(CO)6 modified high-performance aluminum alloy material and a preparation method thereof. The alloy comprises the following components in percentage by weight: less than or equal to 8ppm of Be, 0.005-0.2 percent of Cu, less than or equal to 0.05 percent of Mn, less than or equal to 0.05 percent of Mg, less than or equal to 0.01 percent of Cr, less than or equal to 0.01 percent of Ni, less than or equal to 0.1 percent of Zn, less than or equal to 0.06 percent of Ti, less than or equal to 0.03 percent of Ca, less than or equal to 0.05 percent of V, less than or equal to 0.05 percent of B, 0.003-0.005 percent of Si, 0.003-0.65 percent of Fe and the balance of Al and inevitable trace impurities, wherein the content of a single impurity element is less than or equal to 0.03 percent, the content of the total impurity elements is less than or equal to 0.15 percent, and the carbonyl compound M(CO)6 molecular crystal modifying agent is 1ppm to 1.0 percent of the total furnace burden amount. The aluminum alloy material has a crystalline grain structure which is smaller than that of general aluminum and aluminum alloy and has high purity.

Description

technical field [0001] The invention relates to an aluminum alloy material and a preparation method thereof, in particular to a carbonyl compound M(CO) 6 A metamorphic high-performance aluminum alloy material and a preparation method thereof. Background technique [0002] Modification can greatly improve the comprehensive mechanical properties and chemical stability indicators of aluminum alloys, sometimes even subversively. Substances capable of altering are called modificators. [0003] At present, almost all modificators are concentrated on one technical means: to produce master alloys containing modifiable elements with aluminum as the matrix, and then add the master alloys to the melt when the aluminum alloy is smelted. [0004] This process produces two unfavorable links for energy saving: ①The melting and casting of master alloys containing high concentrations of metamorphic elements often require very high temperatures (>1000°C, such as Al-Ti-B, Al-RE, Al- Si, ...

AI Technical Summary

Problems solved by technology

[0015] In actual production, the frequent problems are that the modifying ability of the modifying agent is unstable, the ratio of the modifying agent added fluctuates widely, it is not easy to accurately control the amount added, and at the same time, it is very easy to mix harmful elements in the process of manufacturing aluminum master alloys of high-temperature elements , has a great influence on the final product quality

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