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Engineered aluminum alloy and method of fabricating the same

a technology of engineering aluminum and alloy, applied in the field of metal materials, can solve the problems of reduced elongation percentage, limited amount of alloying elements to be added, and inability to improve the workability of aluminum-based materials, so as to improve workability, improve elongation percentage, and excellent mechanical properties such as strength

Inactive Publication Date: 2017-08-24
IND ACADEMIC CORP FOUND YONSEI UNIV
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  • Application Information

AI Technical Summary

Benefits of technology

This patent describes a highly-stretchable aluminum alloy that has good strength and flexibility. This alloy can be obtained in a high yield and has improved workability. The alloy is able to strengthen itself through heat treatment, which forms a new reaction compound in the alloy. The patent also provides a method for easily making this alloy. Compared to pure aluminum, the alloy has reduced energy from stacking faults. The nonmetal element in the alloy can be oxygen or nitrogen.

Problems solved by technology

Generally, as the number of kinds of elements added to an aluminum matrix increases, improvements of strength and corrosion resistance may be expected, but elongation percentage for improving the workability of aluminum-based material is not improved or is rather reduced.
However, in the case of the above-stated heat-treated alloy, since it is necessary to take main composition or brittleness into account, alloying elements to be added are limited.

Method used

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  • Engineered aluminum alloy and method of fabricating the same
  • Engineered aluminum alloy and method of fabricating the same
  • Engineered aluminum alloy and method of fabricating the same

Examples

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experimental example

[0095]An aluminum alloy (e.g., A356 alloy) including an aluminum alloy, iron as a first transition metal, and silicon as a non-transition metal was melted by using an electric heating furnace to form a melt. Next, zinc oxide particles or powder having an average particle size of about 30 nm, which is within a range from 5 nm to 50 nm, were added to the melt as a nonmetal element-containing precursor and decomposed. The zinc oxide particles were injected and stirred by about 1 wt % or 1.5 wt %, which is in the range from 0.01 wt % to 5.0 wt % of the total wt % of the melt. A nonmetal element was supersaturated in the melt of the aluminum alloy and solidified as it is to form a casted material of the aluminum alloy in which oxygen as a nonmetal element is supersaturated. Next, the casted material was subjected to a standard T6 heat treatment.

[0096]FIGS. 5A and 5B are transmission electron microscope images showing precipitation compounds in an aluminum-based matrix by heat treatment a...

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Abstract

Provided are an aluminum alloy having an adjusted microstructure in an aluminum matrix or an aluminum alloy matrix for high elongation percentage or high strength and a method of fabricating the same. The aluminum alloy includes an aluminum-based matrix; and a nonmetal element solidified in the aluminum-based matrix, wherein stacking fault energy of the aluminum alloy is decreased compared to that of pure aluminum.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application claims priority of Korean Patent Application No. 10-2016-0021495, filed on Feb. 23, 2016 and priority of Korean Patent Application No. 10-2016-0183446, filed on Dec. 30, 2016, in the KIPO (Korean Intellectual Property Office), the disclosure of which is incorporated herein entirely by reference.BACKGROUND OF THE INVENTION[0002]Field of the Invention[0003]The present disclosure relates to a metal material, and more particularly, to aluminum that is adjusted to have high elongation or high strength and a method for fabricating the same.[0004]Description of the Related Art[0005]Generally, aluminum or its alloy is a material having a wide range of industrial applications because it may be fabricated in various shapes due to lightweight and durable characteristics of aluminum. Aluminum itself is easily deformed due to its low strength, but an aluminum alloy has high strength and high reliability due to elements added thereto to...

Claims

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Application Information

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IPC IPC(8): C22C21/02B22D21/00C22C1/10C22F1/043C22C1/02B22F1/05
CPCC22C21/02C22F1/043C22C2001/1052C22C1/1036B22D21/007C22C1/026B22F2998/10C22C32/0021B22F2999/00C22C1/053C22C26/00C22C32/0084B22F1/05C22C5/00C22C32/0047B22F2007/042B22F3/02B22F7/064B22F3/1021C22C1/058B22F2007/066C22C1/1052
Inventor BAE, DONG HYUNJEON, JE HEONSHIN, SE EUN
Owner IND ACADEMIC CORP FOUND YONSEI UNIV
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