Aluminum-zirconium intermediate alloy and preparation method

A master alloy and aluminum-zirconium technology, which is applied in the field of aluminum-zirconium master alloy and its preparation, can solve problems such as uncertainty, difficulty in flaw detection, insufficient dissolution of Al3Zr compounds and their compounds, etc., so as to improve performance and reduce the risk of segregation , evenly distributed effect

Active Publication Date: 2012-07-11
SOUTHWEST ALUMINUM GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When this aluminum-zirconium master alloy ingot with structural defects is directly added to the aluminum alloy melt, improper casting process often easily leads to insufficient dissolution of large-sized Al3Zr compounds and their compounds in the aluminum-zirconium master alloy, and then forms " "Colloidal particles" are directly inherited into the added aluminum alloy material, which seriously affects the performance of the added aluminum alloy material due to the uncertainty of the segregation area of ​​this type of compound and the difficulty of flaw detection.

Method used

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  • Aluminum-zirconium intermediate alloy and preparation method
  • Aluminum-zirconium intermediate alloy and preparation method
  • Aluminum-zirconium intermediate alloy and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Aluminum Zirconium Master Alloy

[0026] Zirconium is contained in aluminum with a weight content of 9-10%.

Embodiment 2

[0028] Aluminum Zirconium Master Alloy

[0029] The aluminum contains zirconium in an amount of 10% by weight.

[0030] exist Figure 1-a with Figure 1-b In the metallographic structure diagram of the traditional aluminum-zirconium master alloy shown, it can be seen that the Al3Zr compound is in the form of thin strips, and more Al3Zr compounds are segregated. exist Figure 2-a with Figure 2-b In the metallographic structure diagram of the aluminum-zirconium master alloy disclosed in the present invention, it can be seen that the Al3Zr compound is in the form of a block, its size is reduced to 20-100 microns, and the distribution is more uniform and dispersed.

[0031] In the aluminum-zirconium master alloys disclosed in Embodiment 1 and Embodiment 2 of the present invention, by increasing the content of zirconium to about 10%, it is beneficial to form more massive Al3Zr compounds, and the size of the massive Al3Zr compounds is reduced to 20% ~100 microns, the distributi...

Embodiment 3

[0033] Preparation method of aluminum-zirconium master alloy

[0034] see image 3 , image 3 It is a flow chart of the preparation method of the aluminum-zirconium master alloy disclosed in the present invention. include:

[0035] Step S1: Prepare raw materials, use the raw aluminum liquid and zirconium sponge powder as raw materials, calculate the ingredients according to the content requirements of each element in the aluminum-zirconium master alloy, and weigh the above raw materials for use.

[0036] The content of aluminum element in the original aluminum liquid is 99.9%, the content of zirconium element in the sponge zirconium powder is 99%, according to the requirement of 9-10% zirconium element content in aluminum, and weigh the original aluminum liquid and sponge respectively Zirconium powder is spare.

[0037] Step S2: smelting, adding the raw aluminum liquid and zirconium sponge powder after baking the furnace, then heating up and melting, after the metal in th...

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Abstract

The invention discloses an aluminum-zirconium intermediate alloy. The aluminum contains 9 to 10 weight percent of zirconium. In the aluminum-zirconium intermediate alloy disclosed by the invention, the content of a zirconium element is increased to about 10 percent, so that a large number of blocky Al3Zr compounds are formed, the sizes of the blocky Al3Zr compounds are reduced to be between 20 and 100 microns and the blocky Al3Zr compounds are distributed and diffused more uniformly. When the aluminum-zirconium intermediate alloy disclosed by the invention is applied to an aluminum alloy manufacturing process, the risk of Al3Zr compound segregation of an aluminum alloy can be lowered and the service performance of an aluminum alloy material is enhanced. The invention also discloses a preparation method of the aluminum-zirconium intermediate alloy.

Description

technical field [0001] The invention relates to the technical field of alloy preparation, in particular to an aluminum-zirconium master alloy and a preparation method. Background technique [0002] In industrial production, a small amount of zirconium is added to ultra-light aluminum-lithium alloys and Al-Zn-Mg-Cu high-strength aluminum alloys. Its functions are: one is to refine the as-cast grains, and the other is to homogenize the ingot Form uniformly dispersed Al3Zr, inhibit deformation processing recrystallization behavior, control grain size and shape; at the same time, it can also improve the hardenability, weldability, fracture toughness and stress corrosion resistance of Al-Zn-Mg-Cu alloy and other comprehensive performance. [0003] The addition amount of zirconium in the aluminum alloy is 0.1%-0.3%, and in the aluminum alloy manufacturing process, the aluminum-zirconium master alloy ingot containing 3%-4% of zirconium is added to the aluminum melt. Since the alu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/00C22C1/03
Inventor 温庆红林林卢永红任运君
Owner SOUTHWEST ALUMINUM GRP
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