Aluminum alloy, method of casting aluminum alloy, and method of producing aluminum alloy product

a technology of aluminum alloy and aluminum alloy, which is applied in the field of aluminum alloy, method of casting aluminum alloy, and method of producing aluminum alloy products, can solve the problems of poor workability of above casting aluminum alloy, difficult to obtain near-net-shape blanks with complicated shapes, and high production cost, and achieve excellent castability and workability. , high mechanical characteristics, the effect of high mechanical characteristics

Inactive Publication Date: 2011-05-19
TOYOTA JIDOSHA KK
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  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

[0008]The present invention provides a novel aluminum alloy which has excellent castability and workability and has high mechanical characteristics. The present invention also provides a method of producing a casting that is f...

Problems solved by technology

However, since the 6061 alloy has poor castability, near-net-shape blanks with complicated shapes are difficult to obtain and extrusion products are often used as blanks instead.
Thus, the production cost tends to increase when parts with complicated shapes are produced.
However, the above casting aluminum alloys have poor workability, compared to the 6061 alloy.
Thus, the mechanical characteristics, especially ductility, of an Al—Si based alloys always pose a challenge.
However, while these property improving elements are effective even when pres...

Method used

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  • Aluminum alloy, method of casting aluminum alloy, and method of producing aluminum alloy product
  • Aluminum alloy, method of casting aluminum alloy, and method of producing aluminum alloy product
  • Aluminum alloy, method of casting aluminum alloy, and method of producing aluminum alloy product

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Embodiment Construction

[0028]The present inventors have found that the strength of an aluminum alloy containing silicon can be significantly improved without addition of copper (Cu) by adding chromium to the aluminum alloy in addition to adding magnesium in such an amount that the ductility of the aluminum alloy is not adversely affected to improve strength. The present inventors have also found that magnesium contributes not only to improvement of the strength of the aluminum alloy but also to grain refinement of eutectic Si.

[0029]Description is hereinafter made of an embodiment to implement the present invention.

[0030]An aluminum alloy according to this embodiment is an aluminum alloy that has excellent castability and workability, and contains, assuming that the total amount of the alloy is 100% by mass, 3.5% or more and 7.5% or less by mass of silicon (Si), 0.45% or more and 0.8% or less by mass of magnesium (Mg), 0.05% or more and 0.35% or less by mass of chromium (Cr), and the remainder of aluminum ...

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PUM

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Abstract

An aluminum alloy is composed of 15% or more and 7.5% or less by mass of silicon, 0.45% or more and 0.8% or less by mass of magnesium, 0.05% or more and 0.35% or less by mass of chromium, and aluminum, assuming that the total amount of the alloy is 100% by mass.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to an aluminum alloy that has excellent castability, workability, and mechanical characteristics, a method of casting the aluminum alloy, and a method of producing a product of the aluminum alloy.[0003]2. Description of the Related Art[0004]Forged products of 6061 alloy aluminum, which has excellent strength and toughness and high corrosion resistance, are used for wheels, suspension arms and so on for weight reduction of vehicles. However, since the 6061 alloy has poor castability, near-net-shape blanks with complicated shapes are difficult to obtain and extrusion products are often used as blanks instead. Thus, the production cost tends to increase when parts with complicated shapes are produced. For this reason, casting aluminum alloys such as AC4C alloy and AC4CH alloy are used in some cases. When net-shape castings that are formed by casting such a casting aluminum alloy, or near-net-s...

Claims

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Application Information

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IPC IPC(8): C22C21/08B22D11/00C22F1/043B21D31/00
CPCC22C21/00C22F1/043C22C21/04C22C21/02
Inventor KAWAHARA, HIROSHIMATSUOKA, HIDEAKIIWAHORI, HIROAKIKANOU, TAIKIMAEDA, CHIKATOSHIKONISHI, TOKUJIRO
Owner TOYOTA JIDOSHA KK
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