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Recycled magnesium alloy, process for producing the same, and magnesium alloy

一种再生镁合金、制造方法的技术，应用在工艺效率的提高、回收利用技术等方向，能够解决制造成本增加、降低环境负担、抑制镁基构件再生性等问题，达到提高再生性的效果

Active Publication Date: 2012-11-28
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This not only incurs an increase in manufacturing cost, but also inhibits the reproducibility of magnesium-based members, and does not meet current demands for efficient use of resources and reduction of environmental burdens

Method used

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  • Recycled magnesium alloy, process for producing the same, and magnesium alloy
  • Recycled magnesium alloy, process for producing the same, and magnesium alloy
  • Recycled magnesium alloy, process for producing the same, and magnesium alloy

Examples

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Embodiment

[0115] The present invention will be described more specifically by way of examples.

[0116]

[0117] Samples having the chemical compositions shown in Tables 1 to 7 were prepared by using various commercially available raw materials. The R.E. used was commercially available Mm (Ce: 52%; La: 25%; Nd: 16%; and Pr: 5%).

[0118] Specifically, first, a commercially available raw material containing pure metal was introduced into a crucible formed of high Cr alloy steel (JIS SUS430) and having an inner diameter of 80 mm and a height of 230 mm, and was melted by an electric furnace, thereby obtaining a molten metal (Raw material molten metal) (melting step). The chemical composition of the molten metal was adjusted to various compositions shown in Tables 1 to 7 and kept at 750° C. (adjustment step). The thus-obtained molten metal (adjusted molten metal) was filled in a cavity of a metal mold and rapidly cooled and solidified, whereby samples comprising die-castings having vari...

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Abstract

This invention aims to provide a recycled magnesium alloy having a good corrosion resistance and a process for producing the same. The process of the present invention comprises an adjusting step of adjusting composition of molten metal of a magnesium alloy so as to comprise, by mass: Al: 5 to 10 %, Zn: not less than 1 % and not less than three times of Cu content (%), Mn: 0.1 to 1.5 % and the remainder: Mg and impurities with or without one or more reforming elements. While the upper limit of the Al content is restricted to a low level, the Zn content is increased in accordance with the Cu content. Therefore, the recycled magnesium alloy produced by this process can effectively suppress corrosion caused by Cu, which is one of corrosion-causing elements.

Description

technical field [0001] The present invention relates to a recycled magnesium alloy and its manufacturing method as well as a magnesium alloy. Background technique [0002] Magnesium (Mg) is the lightest practical metal and has good specific strength, and its resource is abundant. Magnesium is a promising metal material and magnesium alloys are suitable for various products in various fields due to strong demands for weight reduction and environmental load reduction. [0003] Magnesium, however, is a very reactive metal and has the lowest potential (ie, highest ionization propensity) among practical metals. Since magnesium does not form a corrosion-resistant film on itself, magnesium-based components are susceptible to corrosion. Therefore, obtaining corrosion resistance is necessary for the widespread utilization of Mg-based components. One possible means for obtaining corrosion resistance is to provide a corrosion-resistant film on the surface of a magnesium-based member...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/02C22C23/04C22F1/06C22B26/22
CPCC22C23/02C22C23/04C22B7/003C22B26/22C22B9/00C22F1/06Y02P10/20Y02W30/50
Inventor 川畑博之西野直久岩田靖弦间喜和濑口刚
Owner TOYOTA JIDOSHA KK
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