Grain-refined manganese-lithium alloy and method for manufacturing same

A magnesium-lithium alloy and grain refining technology, applied in the field of grain-refining magnesium-lithium alloy and its preparation, can solve the problems of high cost and low industrialization promotion value, reduce the probability and quantity, and reduce the phenomenon of over-aging , The effect of refining magnesium-lithium alloy structure

Inactive Publication Date: 2013-02-06
CHONGQING UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Rapid solidification-powder metallurgy can significantly refine grains and improve the strength

Method used

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  • Grain-refined manganese-lithium alloy and method for manufacturing same
  • Grain-refined manganese-lithium alloy and method for manufacturing same

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Embodiment 1

[0030] The grain-refined magnesium-lithium alloy of this embodiment consists of the following components by mass percentage:

[0031] Li 14.0%;

[0032] Al 1.0%;

[0033] La 0.3%;

[0034] Impurities ≤0.3%;

[0035] Magnesium balance.

[0036] In the preparation method of the grain-refined magnesium-lithium alloy of this embodiment, the formulated amount of pure magnesium, pure lithium, pure aluminum and magnesium-lanthanum master alloy is heated to 720° C. under the condition of vacuuming and feeding inert gas, and waits for After the alloy is completely melted, it is kept at 700°C for 15 minutes, and then the melted alloy solution is poured into a mold to obtain a cast magnesium-lithium alloy; the mass percentage of each component in the magnesium-lanthanum master alloy is: La 30%; Magnesium 70%.

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Abstract

The invention discloses grain-refined manganese-lithium alloy and a method for manufacturing the same. The manganese-lithium alloy comprises, by mass, from 11.0% to 15.0% of Li, form 1.0% to 3.0% of Al, from 0.1% to 0.5% of La, lower than or equal to 0.3% of impurities and the balance manganese. The method for manufacturing the grain-refined manganese-lithium alloy includes heating a formula amount of the pure manganese, a formula amount of the pure lithium, a formula amount of the pure aluminum and a formula amount of manganese-lanthanum master alloy under conditions of vacuumizing and feeding of inert gas until the temperature reaches 720 DEG C to obtain alloy; preserving heat at the temperature of 700 DEG C after the alloy is completely melted, and allowing the alloy to stand for 15 minutes; and pouring melted alloy liquid in molds to obtain as-cast manganese-lithium alloy. The grain-refine manganese-lithium alloy contains rare earth La, structures of grains of the grain-refine manganese-lithium alloy are fine and uniform, the strength and the plasticity are improved, and the grain-refine manganese-lithium alloy is excellent in follow-up processing property, low in production cost and suitable for industrial large-scale production.

Description

technical field [0001] The invention relates to a magnesium-lithium alloy material and a preparation method thereof, in particular to a grain-refined magnesium-lithium alloy and a preparation method thereof. Background technique [0002] Today, an important development direction of the high-tech industry is to pursue the lightweight of devices and devices. As the lightest metal structure material at present, magnesium-lithium alloy is one of the first-choice materials to achieve lightweight. Magnesium-lithium alloy also has high specific strength, specific stiffness, excellent shock absorption performance and the ability to resist the penetration of high-energy particles, especially its deformability advantages, making it an ideal choice for weapons, aerospace, automobiles, electronics and other fields Material. [0003] LA141 (Mg-14Li-1Al) is a typical commercial magnesium-lithium alloy, its density is about 25% lower than that of traditional magnesium alloys, and it is a...

Claims

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Application Information

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IPC IPC(8): C22C23/00C22C1/03
Inventor 蒋斌潘复生李瑞红杨青山曾迎
Owner CHONGQING UNIV
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