Die casting magnesium alloy and magnesium die casting

A magnesium alloy and alloy technology, applied in the field of magnesium alloy for die-casting and magnesium die-casting products, can solve the problems of no description of formability, no precedent for Mg alloy, no mention of fluidity and formability of molten metal, etc., to prevent low strength characteristics , improve the high temperature creep performance, improve the effect of the alloy structure

Inactive Publication Date: 2005-07-13
ADVANCED TECH +1
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Problems solved by technology

However, the above-mentioned alloy is not an AZ alloy, and the examples are only gravity casting, and the fluidity and formability of the molten metal are not mentioned. Although it is disclosed that it is applied to automobile parts such as engines, the formability in mass production is not described.
In addition, although there are light alloys containing barium (Ba) in Al alloys, there is no precedent in Mg alloys.

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  • Die casting magnesium alloy and magnesium die casting
  • Die casting magnesium alloy and magnesium die casting
  • Die casting magnesium alloy and magnesium die casting

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Embodiment approach 1

[0071] As described above, the inventors of the present invention conducted various studies on magnesium alloys for die-casting and die-cast products from the viewpoint of improving the high-temperature creep performance of existing alloys without causing a decrease in room temperature strength. Maintain the excellent characteristics of AZ91 alloy, and improve the high temperature creep characteristics. In the following, the consideration methods and research results are explained in order. In addition,% in the text indicates% by weight.

[0072] (1) Refinement of crystal grain size

[0073] First of all, the present inventors conducted research in order to improve the characteristics of AZ91 alloy die-cast products.

[0074] The crystal grain size when the AZ91 alloy is die-casted is about 40 μm, and the crystal grains are considerably refined compared to the case where the crystal grain size is 200 to 300 μm during normal gravity casting. Therefore, the crystal refiner used in t...

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Abstract

The invention provides a magnesium alloy for die-casting that can improve the high-temperature creep performance without reducing the strength at room temperature, and a magnesium die-cast product using the alloy. Manufacture of magnesium die-casting products using a magnesium alloy for die-casting, wherein the magnesium alloy for die-casting is an AZ91 series alloy of 6.0 to 11.0% by weight of aluminum, 0.1 to 2.5% by weight of zinc, and 0.1 to 0.5% by weight of manganese, and added silicon: 0.1 to 1.5% by weight 1. At least one of misch metal containing rare earth elements: 0.1-1.2% by weight, zirconium: 0.2-0.8% by weight, made into an AZ91-based matrix alloy, and adding 0.1-1.5% by weight of antimony to the AZ91-based matrix alloy and at least one of 0.05 to 3.5% by weight of calcium, and 0.1 to 2.5% by weight of strontium, and other components are unavoidable components.

Description

Technical field [0001] The invention relates to a magnesium alloy with light weight and higher specific rigidity, in particular to a magnesium alloy for die-casting and magnesium die-cast products using the alloy. Background technique [0002] Among the alloys that have been widely used so far, magnesium alloys (hereinafter referred to as "Mg alloys") are not only light in weight and high in specific rigidity, but also well known as materials with strong electromagnetic wave shielding and thermal conductivity. [0003] Among them, most of the Mg alloys for casting used in portable personal computers and mobile phones and other portable information electronic devices are mainly AZ91 alloys. [0004] The AZ91 alloy has excellent strength, corrosion resistance, formability and other properties, and is widely used in die casting as a casting alloy with good balance. [0005] However, the AZ91 alloy is not suitable for use in automobiles and two-wheeled vehicles that have high require...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/02
CPCC22C23/02A01G9/02E02D29/0266
Inventor 铃木邦辉平井勤二西长博东健司
Owner ADVANCED TECH
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