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Magnesium alloy casting and preparation method thereof

A magnesium alloy and casting technology, applied in the field of magnesium alloy casting and its preparation, can solve the problems of magnesium alloy processing performance, poor mechanical properties, poor fluidity of magnesium alloy, easy oxidation and corrosion, etc. Increased, tissue uniform effect

Inactive Publication Date: 2016-10-12
NANJING LONGCHAO METAL MFG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Magnesium is a reactive metal that is easily oxidized and corroded, and there are few low-cost ways to ensure stable production
Because the magnesium element is extremely active, magnesium is easy to burn, so its production is very difficult, the fluidity of magnesium alloy is poor, the tendency of loosening is large, and the structure density is low, resulting in poor processing performance and mechanical properties of magnesium alloy, which greatly limits its application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A magnesium alloy casting, said casting is composed of the following components by weight percentage: Si: 4.2%; Cu: 0.85%; Al: 3%; W: 0.2%; Mn: 0.1%; Y: 2%; Pr: 0.1%; Ti: 0.1%; Zr: 0.05%; Nd: 0.3%; the balance is Mg and unavoidable impurities. The casting also includes a modificator, which is added in an amount of 2% of the above-mentioned casting components, and the components of the modificator are composed of the following by mass percentage: Zn: 13%; B: 30%, Y: 2%, Gd: 2%, Ce: 4%, Sn: 0.3%, and the balance is Mg.

[0030] The casting also includes a functional salt, which is added in an amount of 0.5% of the above-mentioned casting components, and the components of the functional salt are composed of 40% K2ZrCl6, 40% LiCl and 20% CaF by mass percentage.

[0031] The product prepared in this embodiment has a uniform and smooth surface, no cold shut and cracks, the tensile strength is increased from the original 225MPa~235MPa to more than 300MPa, the yield strength i...

Embodiment 2

[0033] A magnesium alloy casting, said casting is composed of the following components by weight percentage: Si: 2.6%; Cu: 1.5%; Al: 6%; W: 0.8%; Mn: 0.5%; Y: 5%; Pr: 0.2%; Ti: 0.15%; Zr: 0.08%; Nd: 0.7%; the balance is Mg and unavoidable impurities. The casting also includes a modificator, which is added in an amount of 7% of the above-mentioned casting components, and the components of the modificator are composed of the following by mass percentage: Zn: 15%; B: 15%, Y: 2%, Gd: 2%, Ce: 4%, Sn: 0.08%, and the balance is Mg.

[0034] The casting also includes a functional salt, which is added in an amount of 1% of the components of the above-mentioned casting, and the components of the functional salt are composed of 40% K2ZrCl6, 40% LiCl and 20% CaF by mass percentage.

[0035] The product prepared in this embodiment has a uniform and smooth surface, no cold shut and cracks, the tensile strength is increased from the original 225MPa~235MPa to 320MPa, the yield strength is in...

Embodiment 3

[0037] A magnesium alloy casting, said casting is composed of the following components by weight percentage: Si: 3.2%; Cu: 1.2%; Al: 5%; W: 0.6%; Mn: 0.4%; Y: 3%; Pr: 0.15%; Ti: 0.12%; Zr: 0.07%; Nd: 0.5%; the balance is Mg and unavoidable impurities. The casting also includes a modificator, which is added in an amount of 5% of the above-mentioned casting components, and the components of the modificator are composed of the following by mass percentage: Zn: 14%; B: 18%, Y: 2%, Gd: 2%, Ce: 4%, Sn: 0.2%, and the balance is Mg.

[0038] The casting also includes a functional salt, which is added in an amount of 0.8% of the above-mentioned casting components, and the components of the functional salt are composed of 40% K2ZrCl6, 40% LiCl and 20% CaF by mass percentage.

[0039] The product prepared in this embodiment has a uniform and smooth surface, no cold shut and cracks, the tensile strength is increased from the original 225MPa~235MPa to more than 330MPa, the yield strength ...

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Abstract

The invention discloses a magnesium alloy casting. The magnesium alloy casting is characterized by being composed of, by weight, 2.6%-4.2% of Si, 0.85%-1.5% of Cu, 1.3%-6% of Al, 0.2%-0.8% of W, 0.1%-0.5% of Mn, 2%-5% of Y, 0.1%-0.2% of Pr, 0,1%-0.15% of Ti, 0.05%-0.08% of Zr, 0.3%-0.7% of Nd, and the balance Mg and inevitable impurities. According to the magnesium alloy casting, magnesium oxidation can be avoided, the overall hardness, tensile strength, yield strength and elongation of Mg alloy are greatly improved by adding function salt and melt in the magnesium alloy casting.

Description

technical field [0001] The invention relates to the field of material physics, in particular to a magnesium alloy casting and a preparation method thereof. Background technique [0002] Magnesium alloy has the advantages of low density, high specific strength and specific stiffness, good thermal and electrical conductivity, damping and vibration reduction, electromagnetic shielding, easy processing and easy recycling, etc. With extremely important application value and broad application prospects, it is known as "green engineering material in the 21st century". The high vibration damping performance of magnesium alloy makes it applied in the electronic cabin structure of aircraft and missiles. Magnesium alloys are increasingly used in the manufacture of various military equipment (such as mortar mounts and missile cabins, etc.). [0003] At present, the amount of magnesium alloy parts is increasing, but there are still some problems in the application of magnesium alloys. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/00C22C23/06C22C23/02C22C1/02C22C1/06
CPCC22C23/00C22C1/02C22C1/06C22C23/02C22C23/06
Inventor 李小龙
Owner NANJING LONGCHAO METAL MFG TECH
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