Titanium rare-earth magnesium alloy

Abstract

The present invention provides a titanium rare earth magnesium alloy and its preparation method. The composition of said titanium rare earth magnesium alloy includes (by wt%) 1.0%-9.0% of aluminium, 1.0%-6.0% of zinc, 0.2%-3.0% of silicone, 0.5%-7.0% of manganese, 0.01%-15.0% of rare earth, 0.01%-3.0% of titanium, 0.0%-2.0% of zirconium and the rest is magnesium. Said titanium rare earth magnesium alloy has high strength, high toughness and good processability.

Description

technical field A magnesium alloy, especially a corrosion-resistant titanium-containing rare earth magnesium alloy with good corrosion resistance, high strength, high toughness and good processing performance and a preparation method thereof. Background technique The density of magnesium alloy is 23% of steel, 67% of aluminum, and 170% of plastic. It is the lightest metal in metal structural materials. The yield strength of magnesium alloy is roughly equivalent to that of aluminum alloy, only slightly lower than that of carbon steel. It is plastic Its elastic modulus is 4-5 times higher than that of plastics, which is more than 20 times that of plastics. Therefore, under the same strength and rigidity, using magnesium alloys as structural parts can greatly reduce the weight of parts. The aviation industry, the automobile industry, and portable electronic devices are all of great significance. However, magnesium has strong chemical activity and is easy to oxidize in the air....

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Problems solved by technology

The electrode potential of magnesium is very low, and the electrochemical order ranks last among commonly used metals, so the corrosion resistance of magnesium is poor

It is easy to corrode in humid atmosphere, fresh water, sea water and most acid and salt solutions. Therefore, during the production, processing, storage and use of magnesium alloys, appropriate protective measures should be taken on the surface. Magnesium alloys are prone to corrosion when in contact with other metals. Contact corrosion; and conventional magnesium alloys have poor plasticity and low extrusion temperature, so extrusion is more difficult

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