Unlock instant, AI-driven research and patent intelligence for your innovation.

Modified aluminum alloy and preparation method thereof

A technology of aluminum alloy and aluminum alloy melt, applied in the field of modified aluminum alloy and its preparation, can solve problems such as restricting application, deteriorating mechanical properties, etc., so as to improve modification effect, overcome mutual poisoning, improve metamorphism and refinement the effect of

Pending Publication Date: 2022-03-22
SHANGHAI YOHUN TECH CORP
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the as-cast condition, coarse α-Al dendrites and flaky and bulk eutectic silicon seriously deteriorate its mechanical properties, especially the plasticity and tensile strength, which limits its application in actual industrial production.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Modified aluminum alloy and preparation method thereof
  • Modified aluminum alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0054] A method for preparing a modified aluminum alloy according to an embodiment of the present invention includes the following steps:

[0055] Step S1, providing an aluminum alloy melt.

[0056] That is, first, an aluminum alloy melt is prepared.

[0057]Here, it should be noted that a commercially available high-purity aluminum alloy ingot can be directly heated and melted to prepare an aluminum alloy melt, or the aluminum alloy ingot can be further purified. Purification treatment may include the following steps, for example:

[0058] Step S11, providing an aluminum alloy ingot;

[0059] Step S12, removing the oxide layer on the surface of the aluminum alloy ingot;

[0060] Step S13, cleaning and drying the aluminum alloy ingot from which the scale layer has been removed;

[0061] Step S14, melting the dried aluminum alloy ingot to obtain an initial melt;

[0062] Step S15, refining the initial melt to obtain the aluminum alloy melt.

[0063] That is to say, for al...

Embodiment approach 1

[0073] The modifier is a combination of rare earth aluminum alloy, aluminum strontium master alloy, aluminum titanium or aluminum titanium boron master alloy.

[0074] Wherein, the aluminum-strontium master alloy is the modifier, and the aluminum-titanium master alloy or the aluminum-titanium-boron master alloy is the refiner. That is, conventional modifiers and refiners can be used.

[0075] Further, for the modifier and / or the refiner, commercially available materials can be used, or the corresponding metal strontium, titanium, titanium & boron can be weighed and melted in aluminum melt to form A homogeneous alloy is prepared.

[0076] In addition, in addition to conventional modifiers and refiners, rare earth aluminum alloys are further introduced to overcome the limitation of mechanical properties due to the "poisoning" reaction between modifiers and refiners. As the rare earth metal in the rare earth aluminum alloy, considering the strontium in the modifier and the tita...

Embodiment approach 2

[0085] The modifier is a combination of composite rare earth aluminum alloy, aluminum titanium or aluminum titanium boron master alloy.

[0086] As the composite rare earth aluminum alloy, it can be prepared by smelting and refining by using the above rare earth aluminum alloy, modifier, refiner, and aluminum melt.

[0087] For example, the preparation of the complex rare earth aluminum alloy may include:

[0088] Step S311, providing aluminum melt;

[0089] Step S312, providing an aluminum-strontium master alloy, an aluminum-titanium or aluminum-titanium-boron master alloy, and a rare earth aluminum alloy, wherein the rare earth metal in the rare earth aluminum alloy is one or more selected from lanthanum, cerium, and yttrium;

[0090] Step S313, adding the aluminum-strontium master alloy, aluminum-titanium or aluminum-titanium-boron master alloy into the aluminum melt under an inert gas atmosphere and melting to obtain the composite rare earth alloy for aluminum alloy modif...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a modified aluminum alloy and a preparation method thereof. The preparation method comprises the following steps that S1, an aluminum alloy melt is provided; s2, providing a modifier; and S3, in the inert gas atmosphere, the modifier is added into the aluminum alloy melt and smelted, the modified aluminum alloy is obtained, the modifier is a combination of a rare earth aluminum alloy, an aluminum-strontium intermediate alloy and an aluminum-titanium or aluminum-titanium-boron intermediate alloy, or the modifier is a combination of a composite rare earth aluminum alloy, an aluminum-titanium or aluminum-titanium-boron intermediate alloy, or the modifier is a combination of a composite rare earth aluminum alloy, an aluminum-strontium intermediate alloy and an aluminum-titanium or aluminum-titanium-boron intermediate alloy. The composite rare earth aluminum alloy contains strontium, titanium or titanium boron and rare earth metal, and the rare earth metal in the rare earth aluminum alloy and the composite rare earth aluminum alloy is any one or more of lanthanum, cerium and yttrium.

Description

technical field [0001] The invention relates to the technical field of alloy materials and preparation, in particular to a modified aluminum alloy and a preparation method thereof. Background technique [0002] As we all know, aluminum alloy has many excellent properties, and it is widely used in machinery manufacturing industry, especially with the development of lightweight industrial materials (such as automobile industry), the application of aluminum alloy is increasing. [0003] Casting aluminum alloy is to fill the casting mold with molten metal to obtain the aluminum alloy of parts of various shapes. It has the advantages of low density, high specific strength, good corrosion resistance and casting process, and is less restricted by the structural design of parts. However, the strength, yield strength, elongation and other mechanical properties of cast aluminum alloys commonly used in the market are not high enough, which makes the problem of lightening and thinning ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/03C22C1/06C22C21/00
CPCC22C1/026C22C1/03C22C1/06C22C21/00
Inventor 方瑛答建成
Owner SHANGHAI YOHUN TECH CORP