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Magnesium alloy and magnesium alloy casting

A magnesium alloy and casting technology, applied in the field of magnesium alloy castings, can solve problems such as low creep strength, achieve excellent high temperature characteristics, excellent castability, and low cost

Inactive Publication Date: 2011-09-21
TOYOTA IND CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In general Mg alloy parts, AZ91D etc. are mostly used, but the creep strength of this kind of Mg alloy parts is very low and it is not suitable for use in high temperature environment

Method used

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  • Magnesium alloy and magnesium alloy casting
  • Magnesium alloy and magnesium alloy casting
  • Magnesium alloy and magnesium alloy casting

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Embodiment Construction

[0034] Embodiments of the invention will be given to further describe the present invention in detail. In addition, the contents described in this specification, including the following embodiments, are applicable not only to Mg alloys but also to Mg alloy castings, and therefore are simply referred to as “Mg alloys” including Mg alloy castings as appropriate. In addition, whether or not any of the embodiments is optimal varies depending on objects, required performance, and the like.

[0035]

[0036] (1)Al

[0037] Al can be solid-dissolved in Mg crystal grains to increase the room temperature strength of the Mg alloy and improve the corrosion resistance of the Mg alloy. Moreover, if the amount of Al in the Mg alloy is increased, Al solid-solutes to supersaturation in its matrix (dendrites or α grains), thereby forming an Al-rich phase. The rich Al is relatively thermally unstable and will become a Mg-Al compound (Mn 17 al 12 ) and precipitated in the Mg matrix and Mg ...

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Abstract

The Mg alloy comprises 2-6% of Al, Ca at a composition ratio (Ca / Al) of 0.5-1.5, 0.1-0.7% of Mn, 1-6% of Sr, and the remainder Mg and inevitable impurities and / or modified elements, when the total is 100 wt%. With this, an Mg alloy with excellent normal-temperature characteristics as well as creep resistance and high-temperature characteristics, such as thermal conductivity, was obtained.

Description

technical field [0001] The present invention relates to a magnesium alloy having excellent high temperature properties and a magnesium alloy casting formed from the magnesium alloy. Background technique [0002] Magnesium alloys (Mg alloys), which are lighter than aluminum alloys, are attracting attention due to an increase in demand for weight reduction in recent years. Magnesium alloys are the lightest among practical metals, and are gradually being used not only as materials for aircraft, but also as materials for automobiles. Parts formed of Mg alloys (Mg alloy parts) are lightweight and have excellent functionality. In addition, the use of Mg alloy parts can reduce the weight of vehicles and the like and achieve energy saving. [0003] Furthermore, when Mg alloy parts are used in vehicles, etc., high-temperature characteristics suitable for use in high-temperature environments, such as thermal conductivity, heat-resistant strength, and creep properties, are required i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/02B22D21/04C22C23/00C22F1/06C22F1/00
CPCC22C23/02B22D21/007C22F1/06C22C23/00C22C23/06
Inventor 冈本夕纪木下恭一谷泽元治赤塚裕哉
Owner TOYOTA IND CORP
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