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A high-performance aluminum alloy material modified by carbonyl v(co)6 and its preparation method

A technology for aluminum alloy materials and carbonyl compounds, which is applied in the field of high-performance aluminum alloy materials and their preparation, can solve the problems of mixing harmful elements, influence on product quality, and discount on metamorphism, so as to improve strength and elongation performance, and improve metamorphism. effect, the effect of reducing the overall cost

Inactive Publication Date: 2016-03-30
GUIZHOU HUAKE ALUMINUM MATERIAL ENG TECH RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the production of high-performance alloys with extremely strict requirements on impurity limits, the impurities brought in by the modifier are often enough to make the chemical composition exceed the limit; at the same time, a large number of effective modifiers accumulated in the microscopic state are still in the state of single-crystal clumps. At low temperature (<800°C), it cannot be completely dissolved and melted. Only the extremely thin film layer on the surface plays a part of the metamorphic effect due to the possible alloying reaction with aluminum. , the metamorphic effect is greatly reduced
[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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Step 1, select a group of elements according to the formula, by weight ratio: the alloy composition is Cu: 2.0%, Mg: 1.0%, Ni: 0.01%, Zn: 1.5%, carbonyl compound V (CO) 6 Modifier is 0.3% of the total amount, the rest is Al and unavoidable trace impurities, among which unavoidable trace impurities, Si and Fe are impurities brought by raw materials, and the content of impurity elements is: single ≤ 0.03%, Total ≤ 0.15%, Si: ≤ 0.5%, Fe: ≤ 0.5%; the total amount of alloy prepared is 1000kg, then the weight of each substance required is calculated as: Cu: 20kg, Mg: 10kg, Ni: 0.1kg , Zn: 15kg, V(CO) 6 : 3kg, Al: 951.9kg;

[0041] Step 2: First add aluminum ingots or molten aluminum into the melting furnace, heat it to melt it completely and keep it warm at 700-800°C; the melting process is completed in a closed environment;

[0042] Step 3: Add the alloy elements selected in Step 1 according to the proportion of the formula to completely dissolve and melt them, and stir th...

Embodiment 2

[0047] Select a group of elements according to the formula, and by weight ratio: the alloy composition is Be: 0.5ppm, Cu: 2.25%, Mn: 0.015%, Mg: 1.1%, Cr: 0.005%, Ni: 0.02%, Zn: 1.75 %, Ti:0.03%, B:0.025%, carbonyl V(CO) 6 Modifier is 0.2% of the total amount, the rest is Al and unavoidable trace impurities, among which unavoidable trace impurities, Si and Fe are impurities brought by raw materials, and the content of impurity elements is: single ≤ 0.03%, Total ≤ 0.15%, Si: ≤ 0.5%, Fe: ≤ 0.5%; the total amount of alloy prepared is 1000kg, then the weight of each substance required is calculated as: Be: 5×10 -6 kg, Cu: 22.5kg, Mn: 0.15kg, Mg: 11kg, Cr: 0.05kg, Ni: 0.2kg, Zn: 17.5kg, Ti: 0.3kg, B: 0.25kg, V(CO) 6 : 2kg, Al: 946.32kg;

[0048] All the other steps are with embodiment 1, wherein carbonyl compound V (CO) 6 The molecular crystal modifier is 60 mesh.

Embodiment 3

[0050] A group of elements are selected according to the formula, and in terms of weight ratio: the alloy composition is Be: 1ppm, Cu: 2.5%, Mn: 0.03%, Mg: 1.2%, Cr: 0.01%, Ni: 0.03%, Zn: 1.8% , Ti:0.06%, B:0.05%, carbonyl V(CO) 6 Modifier is 0.1% of the total amount, the rest is Al and unavoidable trace impurities, among which unavoidable trace impurities, Si and Fe are impurities brought by raw materials, and the content of impurity elements is: single ≤ 0.03%, Total ≤ 0.15%, Si: ≤ 0.5%, Fe: ≤ 0.5%; the total amount of alloy prepared is 1000kg, then the weight of each substance required is calculated as: Be: 1×10 -5 kg, Cu: 25kg, Mn: 0.3kg, Mg: 12kg, Cr: 0.1kg, Ni: 0.3kg, Zn: 18kg, Ti: 0.6kg, B: 0.5kg, V(CO) 6 : 1kg, Al: 942.2kg;

[0051] All the other steps are with embodiment 1, wherein carbonyl compound V (CO) 6 The molecular crystal modifier is 100 mesh.

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Abstract

The invention discloses a high-performance aluminum alloy material modified by carbonyl compound V(CO)6 and a preparation method thereof. In terms of weight percentage, the alloy composition is Be:≤1ppm, Cu:2.0~2.5%, Mn:≤ 0.03%, Mg: 1.0~1.2%, Cr: ≤0.01%, Ni: 0.01~0.03%, Zn: 1.5~1.8%, Ti: ≤0.06%, B: ≤0.05%, carbonyl V(CO)6 The modificator is 0.1-0.3% of the total amount, the rest is Al and unavoidable trace impurities, and the content of impurity elements is: single ≤ 0.03%, total ≤ 0.15%. The present invention has finer grains than ordinary aluminum and aluminum alloys. grain structure and higher purity.

Description

technical field [0001] The invention relates to an aluminum alloy material and a preparation method thereof, in particular to a carbonyl compound V(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, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/18C22C1/06C22C1/02
Inventor 车云张中可门三泉
Owner GUIZHOU HUAKE ALUMINUM MATERIAL ENG TECH RES